Wharf protection device for ultra-short-distance underwater operation

Abstract

The utility model discloses a wharf protection device for ultra-short distance underwater operation, which comprises a protection main body, a hoisting system and an anchoring system, the protection main body is a combined structure of a steel plate layer and a rubber layer, the steel plate layer converts sharp concentrated load into surface load, and the rubber layer reduces the influence of the load on an underwater structure through energy absorption and shock absorption. The reinforcing layer is arranged to improve the rigidity of the steel plate and disperse stress, the hoisting system adopts a movable buoyancy tank with a winch to adjust the protection main body at any position, the anchoring system anchors the hoisting system on the water surface, so that the protection main body cannot move left and right, and compared with ultra-short-distance operation of an underwater structure without a protection device, the safety of the underwater structure is greatly improved. And the risk that the underwater structure is damaged is avoided, and the construction efficiency of ultra-short-distance operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dock dredging protection, and more specifically, to a dock protection device for ultra-close underwater operations. Background Art

[0002] Common methods for harbor dredging include grab vessels, dredgers, and cutter suction vessels. However, applying these methods to terminal maintenance and upgrade projects presents a technical challenge: dredging in close proximity to the terminal's edge. Generally speaking, grab dredging is not permitted near terminal structures. When dredgers and cutter suction vessels are used to dredge the terminal's edge, strict control and reduced speed are required to minimize impacts on underwater structures.

[0003] In actual construction projects, due to the constant oscillation of above-water equipment, excavator buckets and suction heads frequently collide with dock structures. In dredging projects involving sheet pile and steel pipe pile docks, for example, these collisions damage the steel structure's coating, shortening its service life. Restoring damaged coatings underwater is extremely difficult. For example, collisions with concrete piles can damage the protective coating of the concrete reinforcement, exposing the steel and compromising its service life and structural safety.

[0004] Protective measures need to be taken during ultra-close dredging operations at docks to avoid damage to dock structures. Summary of the Invention

[0005] The purpose of the utility model is to provide a dock protection device for ultra-close underwater operations, so as to solve the technical problem that the prior art lacks necessary protective measures in ultra-close dock dredging operations.

[0006] In order to achieve these purposes and other advantages according to the present invention, a dock protection device for ultra-close underwater operations is provided, comprising:

[0007] A protective body is arranged parallel to the outside of the wharf structure and includes a rubber layer, a steel plate layer, and a reinforcement layer which are arranged vertically away from the wharf structure in sequence;

[0008] The hoisting system includes a pontoon, a winch is provided on the pontoon, a steel wire rope is connected to the pontoon, and the pontoon is connected downward to the protection body through the steel wire rope;

[0009] The anchoring system includes an anchor point arranged on the dock, the anchor point is connected to the buoyancy box through a cable and limits the lateral movement of the buoyancy box parallel to the dock structure.

[0010] Preferably, the anchor point is a bollard located on a pier.

[0011] Preferably, the pontoon extends horizontally in a direction parallel to the outer side of the dock structure, and the anchor points are respectively provided at both ends of the pontoon, and the cables are connected between the anchor points at both ends and the corresponding ends of the pontoon respectively, and the upper end spacing of the cables on both sides is larger than the lower end spacing, forming an eight-shaped anchor state.

[0012] Preferably, the reinforcement layer includes stiffening ribs spaced apart in vertical and transverse directions, and the stiffening ribs are fixedly connected to corresponding side surfaces of the steel plate layer.

[0013] Preferably, the winches are arranged at intervals along the length direction of the pontoon and are symmetrically arranged relative to both ends of the pontoon.

[0014] Preferably, in a horizontal direction parallel to the dock structure, the protection body and the pontoon have the same length.

[0015] Preferably, the thickness of the rubber layer is greater than the thickness of the steel plate layer.

[0016] The present invention includes at least the following beneficial effects: the dock protection device for ultra-close underwater operations of the present invention includes a protection body, a lifting system, and an anchoring system. The protection body is a combination structure of a steel plate layer + a rubber layer. The steel plate layer converts sharp concentrated loads into surface loads. The rubber layer reduces the impact of the load on the underwater structure by absorbing energy and reducing shock. A reinforcement layer is provided to increase the stiffness of the steel plate and the effect of dispersing stress. The lifting system adopts a mobile pontoon with a winch to achieve arbitrary position adjustment of the protection body. The anchoring system anchors the lifting system on the water surface, so that the protection body cannot move left and right. Compared with ultra-close operations of underwater structures without protection devices, the risk of damage to the underwater structure is avoided, and the construction efficiency of ultra-close operations is improved.

[0017] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model as a whole arranged at the dock;

[0020] Figure 3 This is an enlarged structural diagram of the protection body of the utility model at point A.

[0021] Explanation of the reference numerals in the accompanying drawings in the specification: 1. Protective body, 1-1. Stiffening ribs, 1-2. Steel plate layer, 1-3. Rubber layer, 2. Hoisting system, 2-1. Buoyancy box, 2-2. Wire rope, 2-3. Winch, 3. Anchoring system, 4. Wharf, 5. Water surface. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0023] In the description of the present invention, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] like Figure 1-3 As shown, the dock protection device for ultra-close underwater operations of the present invention comprises:

[0025] The protection body 1 is arranged parallel to the outside of the dock 4 structure, and includes rubber layers 1-3, steel plate layers 1-2, and a reinforcement layer which are arranged vertically away from the dock 4 structure in sequence;

[0026] The hoisting system 2 includes a pontoon 2-1, a winch 2-3 is provided on the pontoon 2-1, a steel wire rope 2-2 is connected to the winch 2-3, and the pontoon 2-1 is connected downwardly to the protection body 1 through the steel wire rope 2-2;

[0027] The anchoring system 3 includes anchor points arranged on the pier 4, which are connected to the pontoon 2-1 through cables and limit the lateral movement of the pontoon 2-1 in parallel with the pier 4 structure.

[0028] The protective body 1 is a plate-shaped structure, the size of which covers the operating radius of the construction equipment. A reinforcement layer is welded on one side of the steel plate layer 1-2, and a rubber layer 1-3 is connected to the other side. When the construction equipment hits the underwater structure, the steel plate converts the sharp concentrated load into a surface load, and the rubber layer 1-3 reduces the impact of the load on the dock 4 structure by absorbing energy and reducing shock. The pontoon 2-1 is long and has flags at both ends to remind equipment operators that it is strictly forbidden to operate beyond the width of the pontoon 2-1. Multiple steel wire ropes 2-2 are arranged on the pontoon 2-1 to lift the upper edge of the protective body 1 so that the protective body 1 is vertically distributed in the water. The winch 2-3 set on the pontoon 2-1 adjusts the height of the protective body 1 in the water by adjusting the length of the steel wire rope 2-2; the anchoring system 3 uses the mooring bollard of the dock 4 or plants steel bars and welds node plates on the dock 4 to form anchor points, and uses steel wire ropes 2-2 or cables to anchor the lifting system 2 on the water surface so that the protective body 1 cannot move left and right.

[0029] The installation and implementation steps of the dock protection device are as follows:

[0030] First, a hoisting system 2 is set up on the water surface 5, and a pontoon 2-1 is set up on the water surface outside the structure of the dock 4. The pontoon 2-1 serves as a support and installation platform for the winch 2-3. The wire rope 2-2 is led out through the winch 2-3 to connect the protection body 1. The hoisting system 2 lifts the protection body 1, moves it to the equipment construction area, and arranges it outside the underwater structure of the dock 4. Then, the surface hoisting system 2 is connected to the anchoring system 3 and anchored on the dock 4, and the ultra-close-range operation of the underwater structure of the dock 4 can be carried out. When it is necessary to move, the anchoring system 3 is released, the surface hoisting system 2 is moved, and the entire device can be moved to the next working surface. Compared with ultra-close-range operations on underwater structures without protective devices, the risk of damage to the underwater structure is avoided, the construction efficiency is improved by more than 50%, and the construction period is saved by 2 months.

[0031] Compared with the method of careful construction required by cutter suction dredgers and dredgers for ultra-close underwater operations, the dock 4 protection device of the present invention is provided with a protection device at the front edge of the underwater structure, which improves the construction efficiency of ultra-close operations while directly eliminating the risk of damage to the underwater structure. The lifting system 2 adopts a mobile pontoon 2-1 with a winch 2-3, which can realize the arbitrary position adjustment of the protection body 1. The protection body 1 is a combination structure of a steel plate layer 1-2 + a rubber layer 1-3. The steel plate layer 1-2 converts sharp concentrated loads into surface loads, and the rubber layer 1-3 reduces the impact of the load on the underwater structure by absorbing energy and reducing shock.

[0032] In another technical solution, Figure 1-2 As shown, the anchor point is a mooring post located on the dock 4, which rationally utilizes the existing structure of the dock 4 as an anchor point without the need for additional fixed structure. The overall structural composition is simpler, which improves the overall transportation convenience of the lifting system 2 and the protection body 1.

[0033] In another technical solution, Figure 1-2 As shown, the pontoon 2-1 extends horizontally in a direction parallel to the outer side of the dock 4 structure, and the anchor points are respectively set at the two ends of the pontoon 2-1. The cables are connected between the anchor points at both ends and the corresponding ends of the pontoon 2-1. The upper end spacing of the cables on both sides is larger than the lower end spacing, forming an eight-shaped anchor state. The cables tighten the surface pontoon 2-1, so that the underwater protection body 1 cannot move left and right.

[0034] In another technical solution, Figure 1-3 As shown, the reinforcement layer includes stiffening ribs 1-1 spaced apart vertically and horizontally, which are fixedly connected to the corresponding side surfaces of the steel plate layer 1-2. Cross-shaped steel stiffening ribs 1-1 are welded to the outside of the steel plate to increase the rigidity of the steel plate and disperse the stress.

[0035] In another technical solution, Figure 1-2 As shown, the winches 2-3 are arranged at intervals along the length direction of the pontoon 2-1 and are symmetrically arranged at both ends of the pontoon 2-1. Multiple winches 2-3 jointly bear weight and pull to adjust the height of the protective body 1 in the water.

[0036] In another technical solution, Figure 1-2 As shown, in the horizontal direction parallel to the dock 4 structure, the protection body 1 and the pontoon 2-1 have the same length, which facilitates unified scheduling, installation and transportation arrangements.

[0037] In another technical solution, Figure 1-3 As shown, the thickness of the rubber layer 1-3 is greater than the thickness of the steel plate layer 1-2, and the rubber layer 1-3 provides better energy absorption and shock absorption capabilities.

[0038] For example, a foreign wharf reinforcement and upgrade project required structural safety, requiring the completion of steel sheet piling at the wharf's front edge before dredging the harbor basin. The 60m-wide harbor basin was primarily dredged using the grab bucket method. However, the consultant stipulated that the grab bucket method was prohibited within 3m of the wharf, requiring only long-arm excavators for dredging. However, the long-arm excavator posed a risk of damaging the coating on the steel sheet piles at the wharf's front edge during dredging, and the consultant required measures to mitigate this risk. The utility model uses a dock protection device for ultra-close underwater operations. The protective body consists of a 10mm-thick steel plate layer and a 20mm-thick rubber layer, adhered to the steel plate with epoxy adhesive. Relative to the dock, the steel plate layer faces outward and the rubber layer faces inward. C10 channel steel is cross-welded to the outside of the steel plate as stiffeners, with a spacing of 1.0m between the horizontal and vertical stiffeners. The protective body is 8m high and 10m wide, covering the operating radius of the construction equipment. The pontoon is 10cm long and has four steel wire ropes arranged on it to hoist the upper edge of the underwater sacrificial body so that it is vertically distributed in the water. The pontoon is equipped with four 2-ton wire rope hoists, with a lifting force of 8t that exceeds the buoyant weight of the underwater sacrificial body, 4.2t. During construction, multiple impact marks were found on the steel plate, but inspection by divers revealed no damage to the steel sheet pile coating at the corresponding locations. This shows that when the bucket hits the dock multiple times, the steel plate converts the sharp concentrated load of the bucket into a surface load, and the rubber layer reduces the impact of the surface load on the steel sheet pile by absorbing energy and reducing shock, and the protective effect is good.

[0039] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and drawings shown and described herein.

Claims

1. A dock protection device for ultra-close underwater operations, characterized in that: include: A protective body is arranged parallel to the outside of the wharf structure and includes a rubber layer, a steel plate layer, and a reinforcement layer which are arranged vertically away from the wharf structure in sequence; The hoisting system includes a pontoon, a winch is provided on the pontoon, a steel wire rope is connected to the pontoon, and the pontoon is connected downward to the protection body through the steel wire rope; The anchoring system includes an anchor point arranged on the dock, the anchor point is connected to the buoyancy box through a cable and limits the lateral movement of the buoyancy box parallel to the dock structure.

2. The dock protection device for ultra-close underwater operations according to claim 1, characterized in that: The anchor point is a bollard located on the pier.

3. The dock protection device for ultra-close underwater operations according to claim 2, characterized in that: The pontoon extends horizontally in a direction parallel to the outer side of the dock structure, and the anchor points are respectively set at both ends of the pontoon. The cables are connected between the anchor points at both ends and the corresponding ends of the pontoon respectively. The upper end spacing of the cables on both sides is larger than the lower end spacing, forming an eight-shaped anchor state.

4. The dock protection device for ultra-close underwater operations according to claim 1, characterized in that: The reinforcement layer includes stiffening ribs spaced apart in the vertical and transverse directions, and the stiffening ribs are fixedly connected to corresponding side surfaces of the steel plate layer.

5. The dock protection device for ultra-close underwater operations according to claim 1, characterized in that: The winches are arranged at intervals along the length direction of the pontoon and are symmetrically arranged relative to the two ends of the pontoon.

6. The dock protection device for ultra-close underwater operations according to claim 1, characterized in that: In a horizontal direction parallel to the dock structure, the protection body and the pontoon have the same length.

7. The dock protection device for ultra-close underwater operations according to claim 1, characterized in that: The thickness of the rubber layer is greater than the thickness of the steel plate layer.

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