Self-floating wedge lock anti-collision sleeve

Abstract

The utility model provides a self -floating wedge lock buckle anticollision sleeve belongs to bridge safety protection technical field. Including sleeve body, sleeve body includes the outer layer pressure -resisting casing and inner layer energy absorption layer of cover, realize the assembly of outer layer pressure -resisting casing and inner layer energy absorption layer through the assembly of guide trough and recess, the inside of inner layer energy absorption layer is provided with buoyancy cabin, and the inside of buoyancy cabin is provided with a plurality of counterweight, and counterweight passes through the slide rail of vertical setting and lifts in the inside of buoyancy cabin. Through the combination design of outer layer pressure -resisting casing and inner layer energy absorption layer, can resist external impact force, can also disperse and absorb the collision energy through energy absorption layer, effectively reduce the damage of impact to internal structure. The cooperation assembly of guide trough and recess strengthens the integrity of inner and outer layer structure, promotes the synergic shock resistance. The dynamic cooperation of buoyancy cabin and counterweight can adjust the counterweight position in real time according to water level sensor feedback, adapts to different water depth environment.

Description

Technical Field

[0001] This utility model belongs to the field of bridge safety protection technology, and specifically relates to a self-floating wedge-shaped locking anti-collision sleeve. Background Technology

[0002] In the field of bridge engineering, bridge pier collision protection facilities are a key component in ensuring the structural safety of bridges and extending their service life. Traditional bridge pier collision protection facilities mainly adopt welded fixed steel structures or floating rubber fenders. However, in rivers with special environmental characteristics such as deep water and rapid currents, these traditional collision protection facilities have exposed many significant defects, seriously affecting their collision protection effect and reliability.

[0003] The existing crash barriers have the following problems:

[0004] In the installation of traditional welded fixed steel structure crash barriers, the welding process is crucial. In conditions like the Mekong River, where water depths reach 50 meters, welding operations face significant safety risks. Divers must perform prolonged, high-intensity welding work at such depths, enduring immense water pressure and coping with complex and changing underwater environments, such as strong currents and low visibility.

[0005] In traditional collision avoidance structures, some structures use bolted connections. Pulsating water flow can cause continuous impact and vibration on bolted connections, making the bolts prone to loosening. When a ship or other object collides with the bridge pier's collision avoidance structure, the bolted connection cannot provide sufficient pull-out resistance to maintain structural stability.

[0006] Existing crash barriers lack a hydraulic coordination mechanism in their design, which is another serious problem in deep-water, fast-flowing environments. When subjected to water flow impact, the crash barriers will experience structural displacement. This displacement can cause the seal between the crash barrier and the pier to fail, allowing water to directly enter the interior of the crash barrier.

[0007] Traditional crash barriers use a single-stage crash barrier structure, which leads to stress concentration, accelerating the aging and damage of the crash barriers, shortening their service life, and increasing the maintenance costs of bridges.

[0008] In addition, the construction cost of traditional bridge pier anti-collision facilities is relatively high. Construction requires specialized underwater welding equipment, which is not only expensive, but also has high operation and maintenance costs.

[0009] In summary, traditional bridge pier collision protection systems have many significant shortcomings in deep-water, fast-flowing environments such as the Mekong River. These problems severely affect the protective effectiveness and reliability of these systems, increasing bridge safety risks and construction costs. Therefore, developing a new type of bridge pier collision protection system suitable for deep-water, fast-flowing environments is of significant practical importance. Utility Model Content

[0010] The purpose of this invention is to overcome the problems of fixed protection height, low buffering efficiency and complicated installation of existing devices, and to provide a self-floating wedge-shaped locking anti-collision sleeve.

[0011] To achieve the above objectives, the present invention adopts the following technical solution:

[0012] A self-floating wedge-shaped locking anti-collision sleeve includes a sleeve body, which includes an outer pressure-resistant shell and an inner energy-absorbing layer. The inner side of the outer pressure-resistant shell is provided with several flow guide grooves, and the inner energy-absorbing layer is provided with several grooves. The outer pressure-resistant shell and the inner energy-absorbing layer are assembled through the flow guide grooves and grooves. A buoyancy chamber is provided on the inner side of the inner energy-absorbing layer, and several counterweights are provided on the inner side of the buoyancy chamber. A water level sensor is provided at the bottom of the buoyancy chamber. The counterweights move up and down on the inner side of the buoyancy chamber via vertically arranged slide rails.

[0013] The outer pressure-resistant shell has several rubber anti-collision modules installed on its outer surface.

[0014] The inner energy-absorbing layer is composed of a honeycomb-shaped energy-absorbing layer composite.

[0015] The buoyancy chamber consists of several independent compartments.

[0016] The buoyancy chamber is equipped with an air vent solenoid valve.

[0017] A pressure sensor is installed at the bottom of the buoyancy chamber.

[0018] The connection between the outer pressure-resistant shell and the inner energy-absorbing layer is provided with a wedge-shaped latch, which is used to achieve positioning between the upper and lower layers during assembly.

[0019] The guide channel is equipped with a locking assembly, which includes a locking roller made of high-strength alloy and a sealing ring at the bottom of the guide channel.

[0020] The outer pressure-resistant shell is made of a composite layer of ultra-high molecular weight polyethylene and carbon fiber.

[0021] The buoyancy chamber is filled with closed-cell foam material.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This utility model provides a self-floating wedge-shaped locking anti-collision sleeve, including a sleeve body. The sleeve body includes an outer pressure-resistant shell and an inner energy-absorbing layer. The inner side of the outer pressure-resistant shell is provided with several guide grooves, and the inner energy-absorbing layer has several grooves. The guide grooves and grooves enable the assembly of the outer pressure-resistant shell and the inner energy-absorbing layer. A buoyancy chamber is provided inside the inner energy-absorbing layer, and several counterweights are provided inside the buoyancy chamber. A water level sensor is located at the bottom of the buoyancy chamber. The counterweights move up and down inside the buoyancy chamber via vertically arranged slide rails. Through the combined design of the outer pressure-resistant shell and the inner energy-absorbing layer, it can resist external impact forces and disperse and absorb collision energy through the energy-absorbing layer, effectively reducing the damage to the internal structure from impacts. The coordinated assembly of the guide grooves and grooves enhances the overall integrity of the inner and outer structures, improving their collaborative impact resistance. The dynamic coordination between the buoyancy chamber and the counterweight can adjust the position of the counterweight in real time based on the feedback from the water level sensor, ensuring that the sleeve is always in the optimal floating state, adapting to different water depth environments, avoiding tilting or sinking caused by uneven buoyancy, effectively suppressing swaying under the impact of water flow, and improving stability during offshore operations.

[0024] Furthermore, the grooved structure of the inner energy-absorbing layer not only reduces the overall weight but also forms a controllable deformation zone, which further dissipates energy through plastic deformation. At the same time, it facilitates the replacement of damaged modules and reduces maintenance costs.

[0025] Furthermore, the rubber anti-collision module added to the outer side of the outer pressure-resistant shell can effectively buffer the instantaneous impact force during a collision and reduce the damage caused by rigid contact. It is especially suitable for frequent collision scenarios such as ships and floating objects. The inner layer adopts a honeycomb composite energy-absorbing structure, which can efficiently absorb and disperse impact energy through the plastic deformation of honeycomb units while ensuring lightweight, thus greatly improving the overall impact resistance.

[0026] Furthermore, the buoyancy chamber is composed of multiple independent compartments. Even if a single compartment is damaged and flooded, the remaining compartments can still provide sufficient buoyancy, significantly improving the overall anti-sinking performance and ensuring equipment safety. By controlling the opening and closing of the air vents through electromagnetic valves, the amount of air inside the chamber can be quickly adjusted to achieve dynamic and precise control of buoyancy. Together with the water level sensor, it forms a closed-loop control system that can adapt to complex hydrological changes such as tides and waves. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the inner energy-absorbing layer in this utility model;

[0028] Figure 2 This is a schematic diagram of the outer pressure-resistant shell structure in this utility model;

[0029] Figure 3 This is a schematic diagram of the internal structure of the guide channel in this utility model;

[0030] Figure 4This is a schematic diagram of the rubber anti-collision module and the guide groove of the outer sleeve in this utility model.

[0031] The following are the annotations in the attached diagram: 1. Sleeve body; 2. Outer pressure-resistant shell; 21. Flow guide groove; 22. Rubber anti-collision module; 3. Inner energy-absorbing layer; 31. Buoyancy chamber; 32. Counterweight; 33. Water level sensor; 34. Honeycomb energy-absorbing layer; 35. Air vent solenoid valve; 36. Groove; 4. Wedge-shaped lock; 5. Roller; 6. Sealing ring. Detailed Implementation

[0032] To further understand the present invention, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments are merely illustrative and not intended to limit the scope of the invention.

[0033] Example 1

[0034] like Figures 1-4 As shown, a self-floating wedge-shaped locking anti-collision sleeve includes a sleeve body 1, which includes an outer pressure-resistant shell 2 and an inner energy-absorbing layer 3. The inner surface of the outer pressure-resistant shell 2 is provided with several guide grooves 21, and the outer surface of the outer pressure-resistant shell 2 is provided with several rubber anti-collision modules 22. The outer surface of the inner energy-absorbing layer 3 has several grooves 36. The outer pressure-resistant shell 2 and the inner energy-absorbing layer 3 are assembled by the snap-fit ​​of the grooves 36 and the guide grooves 21. A buoyancy chamber 31 is provided inside the inner energy-absorbing layer 3. The buoyancy chamber 31 is filled with closed-cell foam material, and several counterweights 32 are provided inside the buoyancy chamber 31. The counterweights 32 slide up and down inside the buoyancy chamber 31 via vertically arranged slide rails. A water level sensor 33 and a pressure sensor are provided at the bottom of the buoyancy chamber 31.

[0035] Preferably, the inner energy-absorbing layer 3 is composed of a honeycomb-shaped energy-absorbing layer 34, and the honeycomb layer achieves multi-directional energy dissipation through pore wall buckling and interlayer shearing.

[0036] Preferably, the buoyancy chamber 31 consists of several independent compartments, which are inflated and deflated by an air-hole solenoid valve 35. The water level sensor 33 monitors changes in the ambient water level in real time and controls the counterweight 32 to rise and fall along the slide rail, so that the sleeve body 1 always maintains the set draft. The buoyancy chamber and the counterweight work together to counteract the overturning moment caused by the impact and maintain the stability of the sleeve body 1.

[0037] Preferably, a wedge-shaped latch 4 is provided at the connection between the outer pressure-resistant shell 2 and the inner energy-absorbing layer 3, so as to realize the positioning between the upper and lower layers during assembly.

[0038] Preferably, a locking assembly is provided inside the flow channel 21, which includes a locking roller 5 made of high-strength alloy and a sealing ring 6 at the bottom of the flow channel 21.

[0039] Preferably, the outer pressure-resistant shell 2 is made of ultra-high molecular weight polyethylene (UHMWPE) and carbon fiber composite layer, which improves corrosion resistance by 3 times compared with pure steel structure and extends the maintenance cycle to more than 10 years.

[0040] Preferably, the outer UHMWPE-carbon fiber composite layer is corrosion-resistant and pressure-resistant, the inner honeycomb structure absorbs energy, and the closed-cell foam material provides buoyancy and assists in buffering, forming a lightweight and highly protective system.

[0041] Example 2

[0042] A self-floating wedge-shaped locking anti-collision sleeve, the method of use of which is as follows:

[0043] The outer pressure-resistant shell 2 is fitted onto the outside of the inner energy-absorbing layer 3: the wedge-shaped latch 4 is used to position the inner energy-absorbing layer 3 of the outer pressure-resistant shell 2 in the vertical direction, so that the groove 36 and the guide groove 21 correspond. The guide groove 21 slides up and down in the groove 36 through the latch roller 5. When it reaches the position of the sealing ring 6, the assembly is completed. The guide groove 21 of the outer pressure-resistant shell 2 and the inner groove 36 are precisely engaged by the wedge-shaped latch 4. The impact force is evenly transmitted along the inclined surface of the latch, avoiding stress concentration.

[0044] The water level sensor 33 monitors changes in the ambient water level in real time. When the water level rises, air is pumped into the independent compartment of the buoyancy chamber 31 through the air vent solenoid valve 35 to increase buoyancy. When the water level falls, air is released to reduce buoyancy, ensuring that the sleeve body 1 always maintains the set draft. The pressure sensor detects the magnitude of the impact load in real time and controls the counterweight block 32 to move up and down along the slide rail. When subjected to a lateral impact, the counterweight block 32 slides in the opposite direction of the impact, working with the buoyancy chamber 31 to counteract the overturning moment and maintain the vertical stability of the sleeve. Under the impact of the water flow, the rubber anti-collision module 22 first absorbs the local impact, and the guide channel 21 disperses the shock wave to a larger area, reducing the intensity of the frontal impact. The impact force is transmitted to the inner energy-absorbing layer 3 through the wedge-shaped latch 4. The honeycomb energy-absorbing layer 34 undergoes plastic deformation through buckling of the pore walls and interlayer shear, achieving multi-directional energy dissipation. In addition, the counterweight block 32 slides rapidly on the slide rail, generating inertial resistance, which further consumes the impact kinetic energy.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A self-floating wedge-shaped locking anti-collision sleeve, characterized in that, The sleeve body (1) includes an outer pressure-resistant shell (2) and an inner energy-absorbing layer (3). The outer pressure-resistant shell (2) has several guide grooves (21) on its inner side and several grooves (36) on its inner energy-absorbing layer (3). The outer pressure-resistant shell (2) and the inner energy-absorbing layer (3) are assembled through the guide grooves (21) and the grooves (36). The inner energy-absorbing layer (3) has a buoyancy chamber (31) on its inner side and several counterweights (32) on its inner side. A water level sensor (33) is installed at the bottom of the buoyancy chamber (31). The counterweights (32) move up and down inside the buoyancy chamber (31) via vertically arranged slide rails.

2. The self-floating wedge-shaped locking anti-collision sleeve according to claim 1, characterized in that, The outer pressure-resistant shell (2) has several rubber anti-collision modules (22) on its outer surface.

3. The self-floating wedge-shaped locking anti-collision sleeve according to claim 1, characterized in that, The inner energy-absorbing layer (3) is composed of a honeycomb energy-absorbing layer (34).

4. The self-floating wedge-shaped locking anti-collision sleeve according to claim 1, characterized in that, The buoyancy chamber (31) consists of several independent compartments.

5. A self-floating wedge-shaped locking anti-collision sleeve according to claim 4, characterized in that, The buoyancy chamber (31) is equipped with an air vent solenoid valve (35).

6. A self-floating wedge-shaped locking anti-collision sleeve according to claim 5, characterized in that, A pressure sensor is installed at the bottom of the buoyancy chamber (31).

7. A self-floating wedge-shaped locking anti-collision sleeve according to claim 1, characterized in that, A wedge-shaped latch (4) is provided at the connection between the outer pressure-resistant shell (2) and the inner energy-absorbing layer (3), and the positioning between the upper and lower layers is achieved by the wedge-shaped latch (4) during assembly.

8. A self-floating wedge-shaped locking anti-collision sleeve according to claim 7, characterized in that, The guide channel (21) is provided with a locking assembly, which includes a locking roller (5) made of high-strength alloy and a sealing ring (6) at the bottom of the guide channel (21).

9. A self-floating wedge-shaped locking anti-collision sleeve according to claim 1, characterized in that, The buoyancy chamber (31) is filled with closed-cell foam material.

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