Water flow resistance reduction device for underwater steel pipe pile of steel trestle

Abstract

The utility model relates to the technical field of steel trestles, in particular to a steel trestle underwater steel pipe pile water flow resistance reducing device which comprises a pointed cone assembly arranged in front of a steel pipe pile body in a blocking mode, the pointed cone assembly comprises two sets of baffles, connecting plates and installing rings, the front ends of the baffles abut against each other, and the installing rings are connected to the steel pipe pile body in a sleeved mode. The tail end of the connecting plate is connected with the mounting ring, and the two baffles are rotationally connected with the front end of the connecting plate; the two baffles form a conic node structure, and the steel pipe pile body is arranged on one sides of the opening ends of the two baffles. A spring is connected between the two baffles. The hydraulic impact on the steel pipe pile can be effectively reduced, the water flow resistance is reduced, and a certain protection effect on the steel pipe pile is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel trestle technical field, specifically, relate to a steel trestle water steel pipe pile water flow drag reduction device. BACKGROUND

[0002] Steel pipe pile is the base part of steel trestle, generally adopts big diameter steel pipe and hits into the ground or the bottom of water, provides vertical support force for whole trestle. Its interval and soil depth are determined according to the design load of trestle, geological condition and other factors. And steel pipe pile is in the drainage basin with fast flow velocity, the base design of steel trestle is subjected to large hydrodynamic load, generally needs to adopt steel pipe inclined bracing or sets downstream attached leg's strengthening mode, strengthens the lateral stability of steel trestle. The measures taken to resist the hydrodynamic load caused by water flow usually increase more measure cost, and cannot play a good protection role for steel pipe pile. Therefore, a device for reducing the water flow resistance of steel pipe pile in water of steel trestle is proposed. SUMMARY

[0003] The utility model discloses a kind of steel trestle water steel pipe pile water flow drag reduction devices, which can effectively reduce the hydraulic impact received by steel pipe pile, and play a certain protection role.

[0004] The utility model discloses the following technical scheme is realized: a kind of steel trestle water steel pipe pile water flow drag reduction device, including the sharp cone component that is blocked in the front of steel pipe pile body, the sharp cone component includes two groups of front end abutment baffle, connecting plate and mounting ring, the mounting ring is sleeved on steel pipe pile body, the tail end of the connecting plate is connected with the mounting ring, two baffles are rotatably connected with the front end of the connecting plate;Two the baffle forms conical top structure, and steel pipe pile body is located at the open end side of two baffles;Spring is connected between two baffles.

[0005] Further, a damper is hingedly connected to the baffle and the connecting plate at both ends.

[0006] Further, the mounting ring is rotatably connected to the steel pipe pile body, and a bearing is arranged on the inner side of the mounting ring.

[0007] Further, the mounting ring is provided with at least two symmetrically distributed sides of the baffle.

[0008] Further, the baffle is arranged in a vertical manner.

[0009] Further, the surface of the baffle is coated with a hydrophobic coating.

[0010] Further, a buffer foam is embedded in one end of the baffle close to the steel pipe pile body, and the buffer foam is arranged at the corner of the baffle.

[0011] Further, the two baffles are covered with an elastic skin, which is arranged at one end of the two baffles.

[0012] The utility model discloses at least the following advantages and beneficial effects: the utility model discloses can according to the influence water flow and distribute, simultaneously, the baffle can follow the water flow direction change and automatically adjust the direction, and the baffle rotation process cooperation spring and damper can consume a part of water flow impact's ability, thereby reduced the water flow resistance that steel pipe pile received, played good protection function to steel pipe pile. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the top view of the water flow resistance reduction device for the steel trestle water steel pipe pile in the utility model;

[0014] Figure 2 It is the inside structure schematic view of the water flow resistance reduction device for the steel trestle water steel pipe pile in the utility model;

[0015] Figure 3 It is the side view installation drawing of the water flow resistance reduction device for the steel trestle water steel pipe pile in the utility model.

[0016] Mark: 1 - sharp cone assembly, 11 - baffle, 111 - buffer foam, 12 - connecting plate, 13 - mounting ring, 2 - spring, 3 - damper, 4 - bearing, 5 - steel pipe pile body, 6 - elastic skin. DETAILED DESCRIPTION

[0017] The following further illustrates in conjunction with specific embodiments, referring to Figures 1-3 The utility model discloses a kind of water flow resistance reduction devices for the steel trestle water steel pipe pile, including the sharp cone assembly 1 that baffle steel pipe pile body 5 front, sharp cone assembly 1 includes two groups of front end abutment baffle 11, connecting plate 12 and mounting ring 13, mounting ring 13 is sleeved on steel pipe pile body 5, the tail end of connecting plate 12 is connected with mounting ring 13, two baffles 11 are rotationally connected with the front end of connecting plate 12;Two baffles 11 form conical top structure, and steel pipe pile body 5 is located at the opening end side of two baffles 11;Spring 2 is connected between two baffles 11;Specifically, this sharp cone assembly 1 baffle steel pipe pile front and directly meets water flow direction, two baffles 11 will originally impact on steel pipe pile on water flow and distribute;In addition, when water flow is too large, the front end of baffle 11 will relatively rotate and converge spring 2 compression, the tail end of two baffles 11 can even stick to the surface of steel pipe pile, baffle 11 also consumes part of energy in the process of rotation, so as to realize the purpose of effective resistance reduction of steel pipe pile.

[0018] As Figure 1As shown, in some embodiments also includes a damper 3, both ends of the damper 3 are respectively hinged with the baffle 11 and the connecting plate 12; Specifically, when the two baffles 11 are closed under the impact of the water flow, the damper 3 can consume part of the energy, reducing the impact force.

[0019] As shown, Figure 1 and Figure 3 As shown, the mounting ring 13 in the embodiment is rotatably connected with the steel pipe pile body 5, and the inner side of the mounting ring 13 is provided with a bearing 4; Specifically, because the water flow direction angle may change at any time, the tapered top of the two baffles 11 can better face the water flow, and the water force will automatically adjust the deflection of the baffle 11 by a certain angle, and in order to avoid the possibility of deflection of the baffle 11 by 180 degrees, a limiting mechanism can be correspondingly arranged.

[0020] As shown, Figure 3 As shown, the mounting ring 13 in the embodiment is provided with at least two symmetrically distributed on both sides of the baffle 11, so that the baffle 11 with a longer length can be arranged along the axial direction of the steel pipe pile, thereby increasing the acting area, and multiple mounting rings 13 are arranged to adapt to multiple uniform action points.

[0021] Better, the baffle 11 is arranged in a vertical manner.

[0022] The surface of the baffle 11 in the embodiment is coated with a hydrophobic coating; Specifically, the surface energy of the hydrophobic coating is low, so that it is difficult for water to form a continuous water film on its surface. When the steel pipe pile is coated with a hydrophobic coating, the adhesion of water on its surface is reduced, thereby reducing the resistance. For example, some fluorine-containing polymer coatings, the fluorine atoms in the molecular structure have very low surface free energy. When water contacts the surface of such a coating, water beads will roll off instead of lying flat on the surface, reducing the friction between water and the steel pipe pile. In some small steel pipe pile tests in marine engineering, after using fluorine-containing hydrophobic coating, it is found through water flow resistance test that compared with the uncoated steel pipe pile, the resistance is reduced by about 10%-20%.

[0023] In order to reduce the noise generated by the impact of the baffle 11 and the steel pipe pile during the rotation energy consumption process of the baffle 11, a buffer foam 111 is embedded at one end of the baffle 11 close to the steel pipe pile body 5, and the buffer foam 111 is arranged at the corner of the baffle 11, and the buffer foam 111 and the surface of the baffle 11 are in an integral structure.

[0024] As shown, Figure 1 As shown, the two baffles 11 are covered with an elastic skin 6, and the elastic skin 6 is arranged at one end of the two baffles 11; Specifically, when the two baffles 11 are opened, the elastic skin 6 will be stretched and elongated, and a gap will be formed between the two baffles 11. Due to the shielding of the elastic skin 6, the impact water flow cannot enter the impact of the steel pipe pile body 5 from the gap.

[0025] The above merely is preferred embodiment of the present utility model, and is not for limiting the present utility model, for the person skilled in the art, the present utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A water flow resistance reduction device for steel pipe piles in water on a steel trestle bridge, characterized in that: The application relates to a steel pipe pile body (5) provided with a sharp cone assembly (1) in front of the steel pipe pile body (5), the sharp cone assembly (1) comprising two groups of front-end abutting baffles (11), a connecting plate (12) and a mounting ring (13), the mounting ring (13) being sleeved on the steel pipe pile body (5), the tail end of the connecting plate (12) being connected with the mounting ring (13), and the two baffles (11) being rotationally connected with the front end of the connecting plate (12). The two baffles (11) form a cone top structure, and the steel pipe pile body (5) is arranged on one side of the open end of the two baffles (11). Springs (2) are arranged between the two baffles (11).

2. The steel-pier water flow drag-reducing device of claim 1, wherein: A damper (3) is further arranged, and the two ends of the damper (3) are hingedly connected with the baffles (11) and the connecting plate (12) respectively.

3. The steel-pier water flow drag-reducing device of claim 1, wherein: The mounting ring (13) is rotationally connected with the steel pipe pile body (5), and an inner side of the mounting ring (13) is provided with a bearing (4).

4. The steel-pier water flow drag-reducing device of claim 3, wherein: The mounting ring (13) is provided with at least two symmetrically distributed sides of the baffles (11).

5. The steel-pier water flow drag-reducing device of claim 1, wherein: The baffles (11) are arranged in a vertical manner.

6. The steel-pier water flow drag-reducing device of claim 1, wherein: The surface of the baffles (11) is coated with hydrophobic paint.

7. The steel-pier water flow drag-reducing device of claim 1, wherein: Buffering foams (111) are embedded in one end of the baffles (11) close to the steel pipe pile body (5), and the buffering foams (111) are arranged at the corner of the baffles (11).

8. The steel-pier water flow drag-reducing device of claim 1, wherein: Elastic skins (6) are arranged between the two baffles (11), and the elastic skins (6) are arranged at one end of the two baffles (11).

Images