Bridge underwater construction device with protection function

Abstract

The invention relates to the field of bridge construction, in particular to a bridge underwater construction device with a protection function, which comprises an outer cylinder, an inner cylinder and the like, a plurality of lifting lugs are arranged on the inner cylinder; the outer cylinder and the inner cylinder are both of C-shaped structures; the two outer barrels form a complete cylindrical barrel in a surrounding mode. By arranging the structure of the combined inner barrel, the inner barrel has the functions of a cofferdam and a mold, impact of water flow is effectively blocked, and compared with the prior art, loss and dilution of concrete and pollution of concrete materials to the environment are effectively avoided, the repairing quality and efficiency are improved, and by arranging a positioning plate, the repairing efficiency is improved. The distance between the inner cylinder and the bridge pile foundation body can be controlled, the vibration motor is arranged in the positioning plate, concrete can be vibrated in the grouting process, components in the concrete are more uniform, it is ensured that a sealed chamber is filled, and the operation intensity of later manual vibration is reduced.

Description

Technical Field

[0001] This invention relates to the field of bridge construction, and in particular to an underwater bridge construction device with protective functions. Background Technology

[0002] When a bridge crosses a river, it needs to be supported by pile foundations to ensure the stability of the bridge structure. However, during the use of the bridge, the pile foundations are constantly subjected to the impact and erosion of the water flow, causing the underwater concrete of the pile foundations to peel off, which seriously affects the safety of the bridge. The existing technology generally involves installing a fiberglass sleeve at the location of the bridge pile foundation, and then injecting concrete grout into the gap between the fiberglass sleeve and the bridge pile foundation, while simultaneously draining the water from the gap. After the grout solidifies, the bridge pile foundation repair is completed. However, in the process of draining water from the gap with concrete, the grouting site is not protected, which not only dilutes the concrete, causing it to be lost, but also affects the setting time and the properties of the concrete after it has solidified. This results in poor quality of bridge pile foundation repair, and the concrete carried away by the water flow also pollutes the environment. Summary of the Invention

[0003] In order to overcome the shortcomings of existing underwater bridge pile foundation repair technologies, such as the lack of effective protection of the grouting location during fiberglass sleeve grouting, which leads to the dilution and loss of concrete by water flow, reduced solidification performance, and environmental pollution, this invention provides an underwater bridge construction device with protective functions.

[0004] The technical implementation scheme of the present invention is as follows: an underwater bridge construction device with protective function, comprising an outer cylinder and an inner cylinder fixedly connected inside the outer cylinder; the inner cylinder is provided with a plurality of lifting lugs; both the outer cylinder and the inner cylinder are C-shaped structures; it also includes an arc-shaped electric lock; the two outer cylinders form a complete cylindrical shape; the two inner cylinders form a complete cylindrical shape; a plurality of positioning sensors are provided on the opposing sides of the two inner cylinders; each outer cylinder and the adjacent inner cylinder form a settlement chamber; a plurality of arc-shaped electric locks are fixedly connected in each settlement chamber; the arc-shaped electric lock consists of a fixed part and a telescopic part, wherein the fixed part has a groove that is inserted into the telescopic part of another arc-shaped electric lock; a plurality of first electric actuators are installed in each inner cylinder; each outer cylinder is fixedly connected to all adjacent first electric actuators; each inner cylinder is slidably connected to two positioning plates; each positioning plate is fixedly connected to the telescopic part of all adjacent first electric actuators; a plurality of vibration motors are provided in each positioning plate.

[0005] Furthermore, the inner wall of the inner cylinder is equipped with a detachable fiberglass sleeve structure.

[0006] Furthermore, the side of the positioning plate away from the inner cylinder is coated with a wear-resistant coating.

[0007] Furthermore, the lower part of the settling chamber has several first water inlets; the upper part of the settling chamber has several first air holes.

[0008] Furthermore, it also includes a second electric actuator, a connecting rod, and an anchor cone; each settling chamber is equipped with several second electric actuators; all the telescopic parts of the second electric actuators in each settling chamber are fixedly connected to the connecting rod; each connecting rod is fixedly connected to several anchor cones; each anchor cone corresponds to a first water inlet.

[0009] Furthermore, the first water inlet has a chamfer on the side facing the anchor cone.

[0010] Furthermore, a counterweight chamber is provided inside the inner cylinder; several second water inlets are provided at the lower part of the counterweight chamber; and several second air holes are provided at the upper part of the counterweight chamber.

[0011] Furthermore, it also includes pumps and conduits; each outer cylinder is equipped with a pump; each pump input is connected to a conduit; each conduit is connected to an inner cylinder; the lower end of the conduit extends into the lower part of the counterweight chamber.

[0012] Furthermore, it also includes a floatation bladder; each outer cylinder has a floatation bladder installed on its exterior; each floatation bladder is located below a pump; each floatation bladder has a floatation chamber; each floatation chamber has several drainage holes; and each of the drainage holes in the floatation bladder is equipped with a one-way valve.

[0013] Furthermore, the drainage holes on the floating chamber are set at an angle.

[0014] The beneficial effects are as follows: 1. By setting up a combined inner cylinder structure, the inner cylinder can function as both a cofferdam and a mold, effectively blocking the impact of water flow. Compared with the prior art, it can effectively avoid the loss and dilution of concrete and the pollution of concrete materials to the environment, thus improving the quality and efficiency of repair. Furthermore, by setting up a positioning plate, not only can the distance between the inner cylinder and the bridge pile foundation be controlled, but also the vibration motor set in the positioning plate can realize the vibration of concrete during the grouting process, making the components in the concrete more uniform, ensuring the filling of the sealed chamber, and reducing the workload of manual vibration in the later stage.

[0015] 2. By extracting water from the counterweight chamber and injecting it into the floating chamber, and then spraying it out through the inclined drainage hole, the sprayed water exerts a reaction force on the device. This reaction force provides an oblique shear force to the device, causing it to rotate. At the same time, the positioning plate, which is closely attached to the surface of the bridge pile foundation, and the vibration motor inside the positioning plate, clean the surface of the bridge pile foundation, removing loose or soon-to-fall-off concrete material, which facilitates the subsequent grouting repair of the bridge pile foundation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the underwater bridge construction device with protective function according to the present invention. Figure 2 This is a schematic diagram showing the installation position of the underwater bridge construction device with protective function of the present invention at the bridge pile foundation. Figure 3 This is a schematic diagram of the installation position of the positioning plate of the present invention; Figure 4 This is a schematic diagram of the installation position of the arc-shaped electric lock of the present invention; Figure 5 This is a schematic diagram of the anchor cone installation position according to the present invention; Figure 6 This is a schematic diagram showing the installation position of the floatation capsule of the present invention.

[0017] The meanings of the reference numerals in the attached diagram are as follows: 111-Basic body of bridge pile, 1-Outer cylinder, 2-Inner cylinder, 3-Arch-shaped electric lock, 4-First electric actuator, 5-Positioning plate, 6-Second electric actuator, 7-Connecting rod, 8-Anchor cone, 9-Pump, 10-Conduit, 11-Floating bladder, 101-Settling chamber, 102-First water inlet, 103-First air hole, 201-Counterweight chamber, 202-Second water inlet, 203-Second air hole, 204-Lifting lug, 1101-Floating chamber, 1102-Drainage hole. Detailed Implementation

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0019] First embodiment: A bridge underwater construction device with protective function, according to Figures 1-4 As shown, it includes an outer cylinder 1 and an inner cylinder 2; the inner cylinder 2 is fixedly connected to the inner side of the outer cylinder 1; the inner cylinder 2 is provided with three evenly distributed lifting lugs 204; both the outer cylinder 1 and the inner cylinder 2 are C-shaped structures. It also includes an arc-shaped electric lock 3, a first electric actuator 4, and a positioning plate 5; two outer cylinders 1 form a complete cylindrical shape; two inner cylinders 2 form a complete cylindrical shape; several positioning sensors are evenly distributed vertically on the opposing sides of the two inner cylinders 2; each outer cylinder 1 and the adjacent inner cylinder 2 form a settling chamber 101; three arc-shaped electric locks 3 are fixedly connected vertically in each settling chamber 101; the arc-shaped electric lock 3 consists of a fixed part and a telescopic part, wherein the fixed part has a groove that is inserted into the telescopic part of another arc-shaped electric lock 3; each inner cylinder 2 is equipped with two first electric actuators 4 at the top and two at the bottom; the first electric actuator 4 is an electric push rod; each outer cylinder 1 is fixedly connected to all adjacent first electric actuators 4; each inner cylinder 2 is slidably connected to two positioning plates 5; each positioning plate 5 is fixedly connected to the telescopic part of all adjacent first electric actuators 4; each positioning plate 5 is equipped with a vibration motor evenly distributed vertically.

[0020] In this embodiment, an underwater robot is first used to clean the area around the bridge pile foundation 111 and level the riverbed. Then, a crane on the ship hooks all the lifting lugs 204 on the upper part of one of the inner cylinders 2 and lifts the inner cylinder 2 and its corresponding parts. The inner cylinder 2 is then transferred to one side of the bridge pile foundation 111. The above operation is repeated to transfer the other inner cylinder 2 to the other side of the bridge pile foundation 111. Next, the crane on the ship is controlled to move the two inner cylinders 2 closer to each other until they come into contact. At this time, the positioning sensors on the two inner cylinders 2 monitor the relative position of the two inner cylinders 2 in real time. If the two inner cylinders are in contact... If the two inner cylinders 2 are not aligned, the crew on board can use ropes to fine-tune their positions until they are aligned. Then, all the arc-shaped electric locks 3 are extended, and their telescopic parts are inserted into the grooves of the fixing parts of the adjacent arc-shaped electric locks 3, thus locking the two inner cylinders 2. At this point, the two inner cylinders 2 form a complete cylindrical shape, which fits over the bridge pile foundation 111. The crane then lowers the two inner cylinders 2 until the bottom of the inner cylinders 2 touches the riverbed. The crane is then separated from the lifting lugs 204 on the inner cylinders 2, and the crane is removed. At this point, the bridge pile foundation 111 and the inner cylinders 2 are in the following state: Figure 2As shown, the top of the inner cylinder 2 is higher than the horizontal plane. Next, a long pipe is connected to the ship's water pump, and the pipe is inserted into the gap between the inner cylinder 2 and the bridge pile foundation 111 to fully pump out the water. Then, quick-drying and quick-hardening concrete is injected. After the concrete has completely solidified, it is properly cured before the device is dismantled. The crane on the ship hooks the lifting lugs 204 on the inner cylinder 2, and then controls the retraction of all the arc-shaped electric locks 3, causing the telescopic parts of all the arc-shaped electric locks 3 to return to their original positions. The machine pulls the two inner cylinders 2 apart in a direction away from each other, separating the inner cylinders 2 from the concrete of the bridge pile foundation 111. After the inner cylinders 2 are completely separated from the concrete, the crane slowly lifts the inner cylinders 2 upwards, thus completing the bridge pile foundation repair process. Compared to the existing technology, which directly places the fiberglass sleeve over the bridge pile foundation 111 in water and then injects grout into the bridge pile foundation 111 and the fiberglass sleeve, using the injected concrete to drain the water between the bridge pile foundation 111 and the fiberglass sleeve, and then waits... The concrete is bonded to the bridge pile foundation 111 to repair it. However, this method exposes the fiberglass sleeve directly to water during grouting. The water flow impacts the fiberglass sleeve, causing it to deform and affecting the quality of the concrete inside. This results in poor repair of the bridge pile foundation 111. Furthermore, the water flow carries away concrete, causing material loss and diluting the concrete, affecting its setting and properties. This device uses two inner cylinders 2 combined and fixed to form a structure similar to a precast caisson. After the inner cylinders 2 are placed on the riverbed, the water between the inner cylinders 2 and the bridge pile foundation 111 is pumped out, forming a small-scale cofferdam. Grout is then injected into the gap. Thus, the inner cylinders 2 not only function as a cofferdam but also as a casting mold. This not only avoids the impact of water flow on the concrete, preventing concrete loss and environmental pollution, but also reduces the use of concrete mold sleeves, greatly saving repair time and improving repair efficiency.

[0021] Considering that the distances between the inner cylinder 2 and the bridge pile foundation 111 may vary after the two inner cylinders 2 are combined, after the two inner cylinders 2 are lowered into the water but before they contact the riverbed, all the first electric actuators 4 are extended, simultaneously moving the corresponding positioning plates 5. This causes the positioning plates 5 to move closer to the bridge pile foundation 111. Once all the positioning plates 5 are in contact with the bridge pile foundation 111, the extension of all the first electric actuators 4 is consistent, thus the distance between the inner cylinder 2 and the bridge pile foundation 111 is also consistent. After the position of the inner cylinder 2 is determined, the crane lowers the inner cylinder 2 until it contacts the riverbed. At this point, the settling chamber 101... The filling with water increases the overall weight of the device, greatly enhancing its resistance to water flow impact and reducing the risk of displacement. This allows all the first electric actuators 4 to retract, causing the positioning plate 5 to retract into the inner cylinder 2 and align with the side of the inner cylinder 2. Grouting is then performed between the inner cylinder 2 and the bridge pile base 111. Compared to the existing technology, which directly wraps the bridge pile base 111 with a fiberglass sleeve, where water flow impact causes the fiberglass sleeve to deform and thus affects the concrete forming, the positioning plate 5 ensures that the inner cylinder 2 is aligned with the bridge pile base 111, allowing the concrete to evenly cover the outside of the bridge pile base 111 and resulting in a better repair effect for the bridge pile base 111.

[0022] After setting four positioning plates 5, the gap between the inner cylinder 2 and the bridge pile foundation 111 is divided into four equal parts. At this time, the order of grouting into the gap is determined according to the direction of water flow. The side of the gap that first comes into contact with the water flow is the water-facing side, and the side away from the water-facing side is the water-repellent side. During grouting, grout is injected first into the water-repellent side. At the same time as grouting, the vibration motor in the adjacent positioning plate 5 is started. The vibration motor emits high-frequency vibration to achieve a compaction effect on the concrete grout, effectively avoiding defects such as honeycomb and pitting after the concrete is formed, which would reduce the service effectiveness of the concrete protective layer. After vibration is completed, the two positioning plates 5 adjacent to the grouting area are retracted into the inner cylinder 2. Thus, the concrete grout in this part flows evenly into the other three-quarters of the gap area, excluding the gap on the water-facing side. Then the positioning plates 5 are pushed out, so that the gap is redistributed. Divide into four parts, repeat the above steps, inject grout into the gap on the back side, vibrate, and then distribute the grout. After three-quarters of the gaps are filled with grout, control the opening of the two adjacent positioning plates 5 on the front side gap, so that the concrete is redistributed into the gap. Compared with the existing technology, after grouting, it is necessary to insert the vibrator into the gap between the fiberglass sleeve and the bridge pile base 111 to vibrate the concrete grout. This requires vibrating around the bridge pile base 111 and vibrating at various positions in the gap to make the grout uniform. This is not only time-consuming and labor-intensive, but also prone to uneven vibration, grout layering, honeycomb, and pitted surface if the position of the vibrator is not uniform. In contrast, this device performs synchronous vibration during the grouting process, which can make the grout evenly dispersed and effectively avoid uneven vibration in the later stage.

[0023] In a further preferred embodiment of the present invention, such as Figures 3-5 As shown, the inner wall of the inner cylinder 2 is provided with a detachable fiberglass sleeve structure.

[0024] In this embodiment, a detachable fiberglass sleeve structure is provided on the inner wall of the inner cylinder 2 to facilitate the demolding of concrete. Furthermore, by setting the fiberglass sleeve structure, the contact between concrete and the inner cylinder 2 can be reduced, preventing concrete from adhering to the inner cylinder 2 and increasing the workload of cleaning the inner cylinder 2 later.

[0025] In a further preferred embodiment of the present invention, such as Figures 3-5 As shown, the side of the positioning plate 5 away from the inner cylinder 2 is coated with a wear-resistant coating.

[0026] In this embodiment, to position the inner cylinder 2 using the positioning plate 5, the positioning plate 5 needs to contact the bridge pile base body 111. After positioning, the inner cylinder 2 needs to be moved downwards. At this time, the positioning plate 5 is still in contact with the bridge pile base body 111. Therefore, during the movement, the positioning plate 5 will move relative to the bridge pile base body 111. The positioning plate 5 is coated with a wear-resistant coating, which can effectively reduce the wear of the positioning plate 5 and prevent the positioning accuracy from decreasing after the positioning plate 5 is worn. This would result in the distance between the inner cylinder 2 and the bridge pile base body 111 not being guaranteed, and thus the error of the poured repair layer would be large.

[0027] In a further preferred embodiment of the present invention, such as Figures 4-6 As shown, the lower part of the settling chamber 101 has several evenly distributed first water inlets 102; the upper part of the settling chamber 101 has several evenly distributed first air holes 103.

[0028] In this embodiment, existing technologies generally use high-density materials such as reinforced concrete to make caissons, allowing them to be easily submerged in water. However, during the transportation of the caissons, their weight makes transportation and assembly difficult. Therefore, the outer cylinder 1 is hollowed out, and a first water inlet 102 and a first air vent 103 are provided on it. When the outer cylinder 1 and inner cylinder 2 are lowered into the water, water flows into the settling chamber 101 through the first water inlet 102, while the air in the settling chamber 101 is discharged through the first air vent 103. This allows the settling chamber 101 to be filled with water, reducing the volume of the outer cylinder 1 that needs to be emptied, making it easier to lower the device. Also, when the settling chamber 101 is filled with water, the weight of the device increases, effectively resisting the impact of the water flow and reducing the displacement of the device. After the repair of the bridge pile foundation 111 is completed, when the crane lifts the inner cylinder 2, the water in the settling chamber 101 can be discharged from the first water inlet 102, thus making it easy to completely lift the inner cylinder 2 out of the water. After the water in the settling chamber 101 is emptied, the weight of the device decreases, thus facilitating the transfer of the device.

[0029] In some optional implementations of this embodiment, such as Figures 5-6 As shown, it also includes a second electric actuator 6, a connecting rod 7, and an anchor cone 8; each settling chamber 101 is equipped with several evenly distributed second electric actuators 6; the second electric actuator 6 is an electric push rod; all the telescopic parts of the second electric actuators 6 in each settling chamber 101 are fixedly connected to the connecting rod 7; each connecting rod 7 is fixedly connected to several evenly distributed anchor cones 8; each anchor cone 8 corresponds to a first water inlet 102.

[0030] In this embodiment, after the inner cylinder 2 is placed on the riverbed, the second electric actuator 6 is extended, which synchronously drives the connecting rod 7 and its corresponding anchor cone 8 to move downward. Each anchor cone 8 extends from the corresponding first water inlet 102 and is embedded in the riverbed, thereby further fixing the position of the device and reducing the displacement caused by the impact of the water flow. Then, all the first electric actuators 4 can be controlled to retract, so that the positioning plate 5 is separated from the bridge pile foundation 111. The device can also be stably fixed on the riverbed without moving, providing stable protection for the repair construction of the bridge pile foundation 111. Compared with the caisson in the prior art, when the caisson comes into contact with the riverbed, if there are pebbles on the riverbed, even if the caisson is large, the pebbles are easy to roll. The caisson that falls on the pebbles may still be pushed by the water flow and displaced, affecting the construction of the bridge pile foundation 111. However, by embedding the anchor cone 8 into the riverbed, the influence of pebbles on the device can be avoided, so that the water flow cannot easily move the device.

[0031] In a further preferred embodiment of the present invention, such as Figures 4-5 As shown, the first water inlet 102 has a chamfer on the side facing the anchor cone 8.

[0032] In this embodiment, by setting a chamfer on the first water inlet 102, the anchor cone 8 fits more tightly with the first water inlet 102. The anchor cone 8 blocks the first water inlet 102, preventing the water flow fluctuation from causing the water in the settling chamber 101 to fluctuate synchronously, causing the water in the settling chamber 101 to flow out, which in turn leads to a decrease in the quality of the device and makes the device more susceptible to the influence of water flow fluctuation and thus more likely to shake.

[0033] Second embodiment: In a further preferred embodiment of the present invention, such as Figures 4-6 As shown, the inner cylinder 2 has a counterweight cavity 201; the lower part of the counterweight cavity 201 has several evenly distributed second water inlets 202; the upper part of the counterweight cavity 201 has several evenly distributed second air holes 203.

[0034] In this embodiment, when the inner cylinder 2 is placed in water, water enters the settling chamber 101 through the first inlet 102, and then water also enters the counterweight chamber 201 through the second inlet 202. Excess air in the counterweight chamber 201 is discharged through the second vent 203, thereby further increasing the weight of the device and enhancing its resistance to water flow impact. During the grouting process, it is necessary to periodically control the extension and retraction of the positioning plate 5. When the positioning plate 5 is retracted, it can be put into the counterweight chamber 201. At this time, the grout has not completely solidified on the positioning plate 5, and the part of the positioning plate 5 that is retracted into the counterweight chamber 201 comes into contact with water, thereby cleaning the positioning plate 5 and preventing the grout from sticking the positioning plate 5 to the inner cylinder 2.

[0035] In some optional implementations of this embodiment, such as Figures 1-3 and Figure 6 As shown, it also includes a pump 9 and a conduit 10; each outer cylinder 1 has a pump 9 installed on its exterior; each pump 9 has a conduit 10 connected to its input end; each conduit 10 is connected to an inner cylinder 2; the lower end of the conduit 10 extends into the lower part of the counterweight cavity 201.

[0036] In this embodiment, when lifting the inner cylinder 2, it is necessary to lift it slowly to allow sufficient time for the water in the settling chamber 101 and the counterweight chamber 201 to drain, which consumes a lot of time. Therefore, a pump 9 is installed here. The pump 9 first extracts the water in the counterweight chamber 201 and discharges it to the outside through the conduit 10. At the same time, it controls all the second electric actuators 6 to retract, so that the anchor cones 8 are all retracted into the corresponding settling chambers 101 and the anchor cones 8 are blocked from the first water inlet 102. Thus, by extracting the water in the counterweight chamber 201 while lifting the inner cylinder 2, the water in the settling chamber 101 is also discharged through the first water inlet 102 at the same time. This further improves the efficiency of draining water from the device, allowing the inner cylinder 2 to be lifted faster and improving construction efficiency.

[0037] In some optional implementations of this embodiment, such as Figures 1-3 and Figure 6 As shown, it also includes a floatation bladder 11; each outer cylinder 1 has a floatation bladder 11 installed on its exterior; each floatation bladder 11 is located below a pump 9; each floatation bladder 11 has a floatation chamber 1101 inside; each floatation chamber 1101 has several evenly distributed drain holes 1102 on its side away from the outer cylinder 1; each drain hole 1102 of the floatation bladder 11 is equipped with a one-way valve.

[0038] In this embodiment, considering that water needs to enter the settling chamber 101 and the counterweight chamber 201 during the lowering of the inner cylinder 2, the rate at which water enters is limited by the size and number of the second inlet 202 and the first inlet 102. At this time, by controlling the start of the pump 9, the pump 9 draws water from the counterweight chamber 201, creating a negative pressure at the second inlet 202, thus increasing the rate at which water enters at the second inlet 202. At the same time, the pump 9 pumps the water out to the floating chamber 1101, thereby increasing the weight of the device and further accelerating the sinking rate of the device, effectively improving construction efficiency.

[0039] In a further preferred embodiment of the present invention, such as Figures 1-3 and Figure 6 As shown, the drainage hole 1102 on the floating cavity 1101 is set at an angle.

[0040] In this embodiment, prior to grouting repair of the bridge pile foundation 111, existing technologies generally require manual labor or underwater robots to clean the underwater portion of the bridge pile foundation 111, removing debris and loose or soon-to-fall-off concrete materials from its surface. This process is time-consuming and labor-intensive. However, with this device, there is no need for pre-cleaning of the bridge pile foundation 111. After the two inner cylinders 2 are joined, the device is placed in the water. Its sinking action presses any debris hanging on the bridge pile foundation 111 down to the riverbed, preventing disruption to the repair process. Before the anchor cone 8 is driven into the riverbed, the crane still holds the inner cylinder 2. The positioning plate 5 is extended and attached to the outside of the bridge pile foundation 111. The vibration motor inside the positioning plate 5 is activated. Through the contact between the positioning plate 5 and the bridge pile foundation 111, the bridge pile foundation 111 is grouted. When loose or soon-to-fall-off concrete on 11 is shaken off, the pump 9 is started to extract water from the counterweight chamber 201 and pump it into the floating chamber 11. When the floating chamber 1101 is full of water, the water is sprayed out from the drain hole 1102 at a certain pressure. Since the drain hole 1102 is inclined, the sprayed water is sprayed out at an angle. The sprayed water exerts a reaction force on the device, which provides an oblique shear force to the device, causing the device to rotate. Since the positioning plate 5 is in close contact with the bridge pile base 111 at this time, when the device rotates, the positioning plate 5 sweeps across the surface of the bridge pile base 111. The vibration motor on the positioning plate 5 vibrates and cleans the surface of the bridge pile base 111, removing loose or soon-to-fall-off concrete material, which facilitates the subsequent grouting repair of the bridge pile base 111.

[0041] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A bridge underwater construction device with protective function, comprising an outer cylinder (1) and an inner cylinder (2) fixed inside the outer cylinder (1); the inner cylinder (2) is provided with a plurality of lifting lugs (204); both the outer cylinder (1) and the inner cylinder (2) are C-shaped structures; characterized in that: It also includes an arc-shaped electric lock (3); two outer cylinders (1) form a complete cylindrical shape; two inner cylinders (2) form a complete cylindrical shape; several positioning sensors are provided on the opposing sides of the two inner cylinders (2); each outer cylinder (1) and the adjacent inner cylinder (2) form a settling chamber (101); several arc-shaped electric locks (3) are fixedly connected in each settling chamber (101); the arc-shaped electric lock (3) consists of a fixed part and a telescopic part, wherein the fixed part has a groove and is inserted into the telescopic part of another arc-shaped electric lock (3); several first electric actuators (4) are installed in each inner cylinder (2); each outer cylinder (1) is fixedly connected to all adjacent first electric actuators (4); each inner cylinder (2) is slidably connected to two positioning plates (5); each positioning plate (5) is fixedly connected to the telescopic part of all adjacent first electric actuators (4); several vibration motors are provided in each positioning plate (5).

2. The underwater bridge construction device with protective function according to claim 1, characterized in that: The inner wall of the inner cylinder (2) is provided with a detachable fiberglass sleeve structure.

3. A bridge underwater construction device with protective function according to claim 2, characterized in that: The side of the positioning plate (5) away from the inner cylinder (2) is coated with a wear-resistant coating.

4. A bridge underwater construction device with protective function according to claim 3, characterized in that: The lower part of the settling chamber (101) has several first water inlets (102); the upper part of the settling chamber (101) has several first air holes (103).

5. A bridge underwater construction device with protective function according to claim 4, characterized in that: It also includes a second electric actuator (6), a connecting rod (7) and an anchor cone (8); each settling chamber (101) is equipped with several second electric actuators (6); the telescopic parts of all the second electric actuators (6) in each settling chamber (101) are fixedly connected to the connecting rod (7); each connecting rod (7) is fixedly connected to several anchor cones (8); each anchor cone (8) corresponds to a first water inlet (102).

6. A bridge underwater construction device with protective function according to claim 5, characterized in that: The first inlet (102) has a chamfer on the side facing the anchor cone (8).

7. A bridge underwater construction device with protective function according to any one of claims 1-6, characterized in that: The inner cylinder (2) has a counterweight cavity (201); the lower part of the counterweight cavity (201) has several second water inlets (202); the upper part of the counterweight cavity (201) has several second air holes (203).

8. A bridge underwater construction device with protective function according to claim 7, characterized in that: It also includes a pump (9) and a conduit (10); each outer cylinder (1) is equipped with a pump (9); each pump (9) has a conduit (10) connected to its input end; each conduit (10) is connected to an inner cylinder (2); the lower end of the conduit (10) extends into the lower part of the counterweight chamber (201).

9. A bridge underwater construction device with protective function according to claim 8, characterized in that: It also includes a floatation bladder (11); each outer cylinder (1) has a floatation bladder (11) installed on its exterior; each floatation bladder (11) is located below a pump (9); each floatation bladder (11) has a floatation chamber (1101); each floatation chamber (1101) has several drain holes (1102); each floatation bladder (1102) has a one-way valve installed in its drain holes (1102).

10. A bridge underwater construction device with protective function according to claim 9, characterized in that: The drainage hole (1102) on the floating cavity (1101) is set at an angle.

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