Hull collision test device

Abstract

The utility model discloses a hull collision test device which comprises a pulley support, a fixed pulley, a reversing pulley assembly, a tow rope and a balancing weight. The fixed pulley is arranged on the upper portion of the pulley support, the reversing pulley assembly is arranged on the lower portion of the pulley support and located nearby the position above the horizontal plane of the test pool, the tow rope bypasses the fixed pulley and the reversing pulley assembly, one end of the tow rope is connected with the ship body, and the other end of the tow rope is connected with the balancing weight. The dragging device with the dragging rope, the pulley and the balancing weight is arranged behind the ship body, continuous backward dragging force is applied to the ship body, it is guaranteed that the running direction of the ship body is not changed, and the test requirement that the ship body can impact a wind power foundation at a constant speed under traction of the servo motor can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of hull collision tests, and particularly relates to a hull collision test device. Background Art

[0002] With the wide application of offshore wind power technology, the sea areas covered by offshore wind farms are becoming wider and wider, which significantly increases the risk of unintentional collisions between offshore vessels and wind turbine foundations. In order to measure the impact force when a vessel impacts an offshore wind power foundation at different speeds to evaluate risks and optimize the structural design of offshore wind power foundations, hull collision tests need to be carried out in a test pool using a hull model and a foundation model. During the test, a servo motor drives a roller to rotate, which drives a pull rope to be retracted. The pull rope bypasses a pulley and then connects to the front of the hull. The hull sails forward under the pull of the pull rope and finally impacts on the wind power foundation. However, the forward pulling force and the resistance brought by the water to the hull are not balanced, which will cause the hull to accelerate forward. After the forward speed of the hull exceeds the linear speed of the roller rotation, the pull rope will become slack, and the hull will move rapidly in any direction until the ship speed drops and the pull rope tightens again, making it impossible to achieve the test purpose of making the hull impact the wind power foundation at a constant speed. Therefore, further optimization design is needed. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a hull collision test device for the deficiencies in the above-mentioned existing technologies, so as to ensure that the running direction of the hull remains unchanged and meet the requirement of the hull impacting the wind power foundation at a constant speed.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A hull collision test device includes a pulley support, a fixed pulley, a reversing pulley assembly, a towing rope, and a counterweight; the fixed pulley is arranged on the upper part of the pulley support, the reversing pulley assembly is arranged on the lower part of the pulley support and near the water surface of the test pool, the towing rope bypasses the fixed pulley and the reversing pulley assembly and is connected to the hull at one end and the counterweight at the other end.

[0006] Preferably, the pulley support is composed of two ladders hinged at the top, and the fixed pulley is arranged at the step interval below the hinge part, which will not interfere with the folding of the two ladders.

[0007] Preferably, the pulley support includes a frame body and diagonal braces. Diagonal braces are arranged at the front and rear of the lower part of the frame body to enhance the stability of the pulley support.

[0008] Preferably, the pulley support includes a frame body and a floor fixing plate. The floor fixing plate is arranged at the bottom of the frame body. The stability of the pulley support can be enhanced by installing anchor bolts.

[0009] Preferably, the pulley bracket includes a frame body and a plurality of mounting brackets arranged at different heights on the lower part of the frame body, and the mounting brackets are used for mounting the reversing pulley assembly. By arranging the mounting brackets at different heights, the height of the reversing pulley assembly can be adjusted to adapt to the hull collision test at different water levels.

[0010] Preferably, the mounting bracket is of a C-shaped structure, and a notch is formed between its upper part and the frame body, which facilitates the installation of the reversing pulley assembly.

[0011] Preferably, the reversing pulley assembly includes a reversing pulley and a rod. The reversing pulley is installed in the middle of the rod, and the rod is installed at the lower part of the pulley bracket. When installing the reversing pulley assembly, the rod is inserted through the notch between the mounting bracket and the frame body. Under the action of the force of the towing rope, the rod will be stuck inside the mounting bracket.

[0012] Preferably, the reversing pulley assembly further includes nuts arranged at both ends of the rod, and the nuts are used for limiting the left and right positions of the rod. When the heights are different and the left and right distances of the mounting brackets are also different, the nuts can be adjusted for limiting.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] By arranging a towing device with a towing rope, a pulley and a counterweight block behind the hull, the utility model applies a continuous backward towing force to the hull, ensures that the running direction of the hull remains unchanged, and can meet the test requirements that the hull can achieve uniform impact on the wind power foundation under the traction of the servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a structural schematic diagram of the hull collision test device Figure 1 ;

[0017] Figure 2 is a structural schematic diagram of the hull collision test device Figure 2 ;

[0018] Figure 3 is Figure 2 a partial enlarged view of part A in

[0019] Figure 4 is a structural schematic diagram of the installation position of the reversing pulley assembly.

[0020] Description of Reference Numerals of the Drawings:

[0021] 1. Pulley support; 1-1. Diagonal brace; 1-2. Anchor base fixing plate; 1-3. Mounting frame; 2. Fixed pulley; 3. Reversing pulley assembly; 3-1. Reversing pulley; 3-2. Rod; 3-3. Nut; 4. Towing rope; 5. Counterweight; 6. Hull; 7. Test pool. Detailed Implementation Manner

[0022] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be described in detail below with reference to the drawings and specific embodiments.

[0023] As Figure 1 and Figure 2 shown, a hull collision test device includes a pulley support 1, a fixed pulley 2, a reversing pulley assembly 3, a towing rope 4, and a counterweight 5; the fixed pulley 2 is arranged at the upper part of the pulley support 1, the reversing pulley assembly 3 is arranged at the lower part of the pulley support 1 and near the water level of the test pool 7, the towing rope 4 bypasses the fixed pulley 2 and the reversing pulley assembly 3 and one end is connected to the hull 6, and the other end is connected to the counterweight 5. The height of the reversing pulley assembly 3 is preferably set so that when the towing rope 4 is connected to the tail of the hull 6, the towing rope 4 is approximately horizontal on the horizontal plane. The pulley support 1 is composed of two ladders hinged at the top, and the fixed pulley 2 is arranged at the step interval below the hinge part, without interfering with the folding of the two ladders.

[0024] As Figure 2 and Figure 3 shown, the pulley support 1 includes a frame body and a diagonal brace 1-1, and the diagonal brace 1-1 is arranged at the front and rear of the lower part of the frame body to enhance the stability of the pulley support 1. The pulley support 1 includes a frame body and an anchor base fixing plate 1-2, and the anchor base fixing plate 1-2 is arranged at the bottom of the frame body. By installing anchor bolts, the stability of the pulley support 1 can be enhanced. The pulley support 1 includes a frame body and a plurality of mounting frames 1-3 arranged at different heights at the lower part of the frame body, and the mounting frames 1-3 are used to mount the reversing pulley assembly 3. By setting the mounting frames 1-3 at different heights, the height of the reversing pulley assembly 3 can be adjusted to adapt to the hull collision test at different water levels.

[0025] As Figure 3 and Figure 4As shown, the mounting bracket 1-3 has a C-shaped structure, and a notch is formed between its upper part and the frame body. This notch facilitates the installation of the reversing pulley assembly 3. The reversing pulley assembly 3 includes a reversing pulley 3-1 and a rod 3-2. The reversing pulley 3-1 is installed in the middle of the rod 3-2, and the rod 3-2 is installed at the lower part of the pulley bracket 1. When installing the reversing pulley assembly 3, the rod 3-2 is inserted through the notch between the mounting bracket 1-3 and the frame body. Under the action of the force of the towing rope 4, the rod 3-2 will be stuck inside the mounting bracket 1-3. The reversing pulley assembly 3 further includes nuts 3-3 provided at both ends of the rod 3-2, and the nuts 3-3 are used to limit the left and right positions of the rod 3-2. When the heights are different and the left and right distances of the mounting bracket 1-3 are also different, the nuts 3-3 can be adjusted for limiting.

[0026] The utility model provides a towing device with a towing rope, pulleys and counterweights behind the hull, which applies a continuous backward towing force to the hull, ensures that the running direction of the hull remains unchanged, and can meet the test requirements that the hull can achieve a uniform impact on the wind power foundation under the traction of a servo motor.

[0027] The above has described the embodiments of the utility model in detail through examples, but the content described is only an exemplary embodiment of the embodiments of the utility model and cannot be considered as limiting the scope of implementation of the embodiments of the utility model. The protection scope of the embodiments of the utility model is defined by the claims. All those who use the technical solutions described in the embodiments of the utility model, or those skilled in the art inspired by the technical solutions in the embodiments of the utility model, within the essence and protection scope of the embodiments of the utility model, design similar technical solutions to achieve the above technical effects, or make equivalent changes and improvements to the scope of the application, etc., should still fall within the patent coverage protection scope of the embodiments of the utility model.

Claims

1. A ship hull collision test device, characterized in that: The invention comprises a pulley bracket (1), a fixed pulley (2), a reversing pulley assembly (3), a towing rope (4) and a counterweight (5); the fixed pulley (2) is arranged at the upper part of the pulley bracket (1), the reversing pulley assembly (3) is arranged at the lower part of the pulley bracket (1) and is located near the horizontal plane of the test water tank (7); the towing rope (4) passes around the fixed pulley (2) and the reversing pulley assembly (3) and is connected to the hull (6) at one end and to the counterweight (5) at the other end.

2. The ship hull collision test device according to claim 1, characterized in that: The pulley bracket (1) is composed of two ladders hinged at the top, and the fixed pulley (2) is arranged at the step ladder interval below the hinged part.

3. The ship hull collision test device according to claim 1, characterized in that: The pulley bracket (1) comprises a frame body and an inclined brace (1-1), and the lower part of the frame body is provided with an inclined brace (1-1) at the front and rear.

4. The ship hull collision test device according to claim 1, characterized in that: The pulley bracket (1) comprises a frame body and a ground fixing plate (1-2), and the bottom of the frame body is provided with a ground fixing plate (1-2).

5. The ship hull collision test device according to claim 1, characterized in that: The pulley bracket (1) comprises a frame body and a plurality of mounting frames (1-3) arranged at different heights at the lower part of the frame body, wherein the mounting frames (1-3) are used to mount the reversing pulley assembly (3).

6. The ship hull collision test device according to claim 5, characterized in that: The mounting frame (1-3) is a C-shaped structure, with a gap formed between the upper part and the frame body.

7. The ship hull collision test device according to claim 1, characterized in that: The reversing pulley assembly (3) comprises a reversing pulley (3-1) and a rod (3-2), wherein the reversing pulley (3-1) is installed at the middle part of the rod (3-2), and the rod (3-2) is installed at the lower part of the pulley bracket (1).

8. The ship hull collision test device according to claim 7, characterized in that: The reversing pulley assembly (3) further comprises nuts (3-3) arranged at both ends of the rod (3-2), and the nuts (3-3) are used to limit the left and right positions of the rod (3-2).

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