A kind of ship tugboat shaft system deflector

Abstract

The present invention discloses a ship tugboat shaft system fairing, comprising a fairing outer fairing with a trapezoidal cross section; a middle sleeve is provided at the middle position of the fairing outer fairing, a plurality of fairing plates with uniform spacing and divergence are installed between the middle sleeve and the inner wall of the fairing outer fairing, the fairing plates divide the interior of the fairing outer fairing into a plurality of fairing spaces of the same size, a swinging diverter plate is also installed between two adjacent fairing plates in the same fairing space, and the two fairing plates are provided with fixed mounting seats at the front sides at corresponding positions. In the present invention, the front ends of the swinging diverter plates are correspondingly mounted through fixed mounting seats and plug rods, the front ends of the swinging diverter plates can rotate, and the rear sides of the swinging diverter plates can swing; after such arrangement, the present invention further divides the fairing space into two areas through the swinging diverter plates, and when water flows through the two areas, the rear ends of the swinging diverter plates will swing according to the pressure of the water flow, thereby further increasing the propulsion efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of marine equipment, in particular to a shaft system fairing of a ship tugboat. Background Art

[0002] In the existing heavy marine engineering machinery technology, a tugboat is also called a tugboat, which is used to tow ships and rafts that have no self-propulsion ability, or to assist large ships in entering and leaving ports, docking, or to rescue ships in distress at sea. Tugboats do not have cargo holds, and their hulls are not large, but they are equipped with high-power propulsion engines and towing equipment, and have the characteristics of "small size and great strength". In particular, the global offshore wind power installed capacity is currently experiencing rapid growth, which has also greatly increased the demand for tugboats.

[0003] The ship shafting is an important component of the ship's power plant. Its function is to transfer the power generated by the main engine to the propeller, and then transfer the axial thrust generated by the propeller to the hull to achieve ship propulsion. The installation quality of the shafting is directly related to the reliability of the main engine propulsion system operation and the safe navigation of the ship.

[0004] The fairing is a fairing body installed in conjunction with the propeller of the ship's shaft system, and is used to gather and discharge the water flow generated by the propeller, thereby generating a driving force to drive the ship to move. The setting of the fairing in the prior art is relatively simple; for example, the patent document with application publication number: CN 104590522 A discloses "a new type of fairing", and the technical solution includes an outer cover, a transverse plate, a middle cover, a vertical plate, a pressure plate, a guide wing, a reinforcing rod, a web and a spiral cover. The inner part of the outer cover is provided with a middle cover through a plurality of transverse plates, and vertical plates are arranged between the transverse plates. The upper part of the outer cover is provided with a guide wing, and pressure plates are arranged on both sides; the front part of the outer cover is provided with a spiral cover; the outer cover is hollow inside and outside, and a reinforcing rod is arranged inside. A web is provided at the connection between the outer cover and the guide wing for welding reinforcement. The installation method is to weld the web first and then weld the outer cover outer plate, so that the outer plate can be fully welded to enhance the structural strength.

[0005] The above technical solution mainly cuts the water flow through the internal structure to achieve linear propulsion, and at the same time cooperates with the spiral cover to make the water flow produce a certain inward rotation, thereby realizing long-distance linear water flow and greatly improving the propulsion efficiency.

[0006] However, in the above technical solution, the division of the internal water flow is still not reasonable enough, and after the water flow is divided, each divided space area is fixed, and a certain resistance will still be generated in the process of water flow, affecting the water flow propulsion efficiency.

[0007] Therefore, in order to solve the above problems, it is necessary to develop a ship tugboat shaft system fairing with reasonable internal space division and capable of increasing propulsion efficiency. Summary of the invention

[0008] The purpose of the present invention is to provide a ship tugboat shaft system deflector to address the deficiencies of the prior art; the technical solution is as follows:

[0009] A ship tugboat shaft system fairing comprises a fairing outer fairing with a trapezoidal cross section; a middle sleeve is arranged at the middle position of the fairing outer fairing, a plurality of fairing plates with uniform intervals and in a divergent shape are installed between the middle sleeve and the inner wall of the fairing outer fairing, and the fairing plates divide the interior of the fairing outer fairing into a plurality of fairing spaces with the same size.

[0010] A swinging diverter plate is also installed between two adjacent guide plates in the same guide space. Fixed mounting seats are provided on the front sides of the two guide plates at corresponding positions. Insert rods are respectively provided on both sides of the front end of the swinging diverter plate. The insert rods on both sides are correspondingly embedded in the mounting seats of the guide plates on both sides, and the insert rods are rotatable.

[0011] The rear sides of the corresponding positions of two adjacent guide plates in the same guide space are respectively provided with arc-shaped mounting seats, and arc-shaped grooves are arranged in the arc-shaped mounting seats. Insertion rods are also arranged on both sides of the rear side of the swing diverter plate, and the insertion rods are embedded in the arc-shaped grooves.

[0012] The plug rod at the front end of the swing diverter plate is embedded in the fixed mounting seat, and the plug rod at the front end is the rotation point. The plug rod at the rear end of the swing diverter plate is embedded in the arc groove, so that the rear end part of the swing diverter plate can swing along the arc groove under the action of water flow.

[0013] Furthermore, there are six guide plates between the guide outer cover and the middle sleeve, and correspondingly there are six guide spaces and six swing splitter plates.

[0014] Furthermore, the swing splitter plate is arranged at a middle position between two adjacent guide plates.

[0015] Furthermore, the swing splitter plate is arranged at a position of one third of the outer sides of two adjacent guide plates.

[0016] Furthermore, a circle is drawn with the fixed mounting seat at the front end of the guide plate as the center and the distance between the fixed mounting seat and the arc-shaped mounting seat as the radius; the contour shape of the arc-shaped groove on the arc-shaped mounting seat at the rear end of the guide plate is located on the circle.

[0017] Furthermore, the fixed mounting seat and the arc-shaped mounting seat arranged on the side wall of the guide plate are both arranged as protrusions, and the four insertion rods on the front and rear sides of the swing splitter plate are correspondingly inserted into the fixed mounting seat and the arc-shaped mounting seat.

[0018] Beneficial effects: The present invention has the following beneficial effects:

[0019] (1) In the present invention, not only the guide plates are arranged to divide the guide space, but also swinging diverter plates are installed on the two guide plates in the same guide space. The front ends of the swinging diverter plates are correspondingly installed through fixed mounting seats and plug rods. The front ends of the swinging diverter plates can rotate, while the rear ends of the swinging diverter plates can swing. After such arrangement, the present invention further divides the guide space into two areas through the swinging diverter plates, and when water flows through the two areas, the rear ends of the swinging diverter plates will swing according to the pressure of the water flow, thereby further increasing the propulsion efficiency.

[0020] (2) The specific installation of the swing splitter plate in the present invention is that the front end is installed by the fixed mounting seat and the plug rod, and the rear end is installed by the plug rod and the arc-shaped mounting seat. Since the rear end needs to be swung to adjust the position, the present invention sets an arc groove in the arc-shaped mounting seat at the rear end. The contour shape of the arc groove is consistent with the swing contour of the swing splitter plate. When the swing splitter plate swings, the plug rod at the rear end moves up and down in the arc groove accordingly. The installation structure of the swing plate is also very reasonable.

[0021] (3) The position of the swing diverter plate in the present invention can be set according to the specific usage. It is best to install the swing diverter plate in the middle position of the guide plate, with the upper and lower areas of similar size, and reasonably set the number of guide plates to achieve reasonable diversion. In addition, the swing diverter plate and the guide plate are specifically installed through a fixed seat and a plug rod. The structural setting is very reasonable and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present invention;

[0023] Figure 2 for Figure 1 Middle AA section view;

[0024] Figure 3 for Figure 2 Center B view. DETAILED DESCRIPTION

[0025] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a ship tugboat shaft system fairing includes a fairing outer cover 1 with a trapezoidal cross section; a middle sleeve 2 is arranged at the middle position of the fairing outer cover 1, and a plurality of fairing plates 3 with uniform intervals and divergent shapes are installed between the middle sleeve 2 and the inner wall of the fairing outer cover 1, and the fairing plates 3 divide the interior of the fairing outer cover 1 into a plurality of fairing spaces 4 with the same size.

[0027] The basic structure of the present invention is to set a guide cover, a circular middle sleeve is set at the middle position, and a guide plate is installed between the middle sleeve and the inner wall of the guide cover, so that the space inside the guide plate can be divided into a plurality of guide spaces, and the water flow is divided by the guide plate and the guide space to increase the propulsion capacity.

[0028] A swinging diverter plate 5 is also installed between two adjacent guide plates 3 in the same guide space 4. Fixed mounting seats 6 are provided on the front sides of the two guide plates 3 at corresponding positions. Insert rods 7 are respectively provided on both sides of the front end of the swinging diverter plate 5. The insert rods 7 on both sides are correspondingly embedded in the mounting seats of the guide plates 3 on both sides, and the insert rods 7 are rotatable.

[0029] In the present invention, not only the guide plate is used to divide the guide space, but also a swinging diverter plate is installed on the two guide plates in the same guide space. The two sides of the front end of the swinging diverter plate are installed correspondingly through a fixed mounting seat and a plug rod. The front end of the swinging diverter plate can be rotated, and the rear side of the swinging diverter plate can be swung. After such arrangement, the present invention further divides the guide space into two areas through the swinging diverter plate, and when the water flows through the two areas, the rear end of the swinging diverter plate will swing according to the pressure of the water flow, thereby further increasing the propulsion efficiency.

[0030] The rear sides of the corresponding positions of two adjacent guide plates 3 in the same guide space 4 are respectively provided with arc-shaped mounting seats 8, and arc-shaped grooves 9 are provided in the arc-shaped mounting seats 8. Insert rods 7 are also provided on both sides of the rear side of the swing diverter plate 5, and the insert rods 7 are embedded in the arc-shaped grooves 9.

[0031] The plug rod 7 at the front end of the swing diverter plate 5 is embedded in the fixed mounting seat 6, and the plug rod 7 at the front end is the rotation point. The plug rod 7 at the rear end of the swing diverter plate 5 is embedded in the arc groove 9, so that the rear end part of the swing diverter plate 5 can swing along the arc groove 9 under the action of water flow.

[0032] The specific installation of the swing diverter plate in the present invention is that the front end is installed correspondingly through the fixed mounting seat and the plug rod, and the rear end is installed correspondingly through the plug rod and the arc-shaped mounting seat. Because the rear end needs to be swung to adjust the position, the present invention sets an arc groove in the arc-shaped mounting seat at the rear end. The contour shape of the arc groove is consistent with the swing contour of the swing diverter plate. When the swing diverter plate swings, the plug rod at the rear end moves up and down in the arc groove accordingly, and the installation structure of the swing plate is also very reasonable.

[0033] There are six guide plates 3 between the guide outer cover 1 and the middle sleeve 2 , and correspondingly there are six guide spaces 4 and six swing diverter plates 5 ; the swing diverter plate 5 is arranged at the middle position between two adjacent guide plates 3 .

[0034] The swing splitter plate 5 is arranged at the outer third of the two adjacent guide plates 3; a circle is drawn with the fixed mounting seat 6 at the front end of the guide plate 3 as the center and the distance between the fixed mounting seat 6 and the arc-shaped mounting seat 8 as the radius; the contour shape of the arc-shaped groove 9 on the arc-shaped mounting seat 8 at the rear end of the guide plate 3 is located on the circle.

[0035] The fixed mounting seat 6 and the arc-shaped mounting seat 8 arranged on the side wall of the guide plate 3 are both arranged as protrusions, and the four insertion rods 7 on the front and rear sides of the swing splitter plate 5 are inserted into the fixed mounting seat 6 and the arc-shaped mounting seat 8 respectively.

[0036] The position of the swing diverter plate in the present invention can be set according to the specific usage conditions. It is best to install the swing diverter plate in the middle position of the guide plate, with the upper and lower areas of similar size, and reasonably set the number of guide plates to achieve reasonable diversion. In addition, the specific installation of the swing diverter plate and the guide plate is installed through a fixed seat and a plug rod. The structural setting is very reasonable and easy to use.

[0037] The above specific implementation is only a preferred embodiment of the present invention and is not intended to limit the implementation of the present invention and the scope of the claims. All equivalent changes and modifications made according to the content of the patent protection scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A ship tugboat shaft system fairing, characterized in that: The invention comprises a flow guide outer cover (1), wherein the cross section of the flow guide outer cover (1) parallel to the central axis is trapezoidal; a middle sleeve (2) is arranged at an axial middle position inside the flow guide outer cover (1); a plurality of flow guide plates (3) which are evenly spaced and divergent along the circumferential direction are installed between the middle sleeve (2) and the inner wall of the flow guide outer cover (1); the flow guide plates (3) divide the interior of the flow guide outer cover (1) into a plurality of flow guide spaces (4) of equal size along the circumferential direction; A swing splitter plate (5) is also installed between two adjacent guide plates (3) in the same guide space (4); fixed mounting seats (6) are provided on the front sides of the two guide plates (3) at corresponding positions; plug rods (7) are respectively provided on both sides of the front end of the swing splitter plate (5); the plug rods (7) on both sides are correspondingly embedded in the mounting seats of the guide plates (3) on both sides, and the plug rods (7) are rotatable; The rear sides of the two adjacent guide plates (3) at corresponding positions in the same guide space (4) are respectively provided with arc-shaped mounting seats (8), and the arc-shaped mounting seats (8) are provided with arc-shaped grooves (9). The two sides of the rear side of the swing diverter plate (5) are also provided with insertion rods (7), and the insertion rods (7) are embedded in the arc-shaped grooves (9); The plug rod (7) at the front end of the swing splitter plate (5) is embedded in the fixed mounting seat (6), the plug rod (7) at the front end is a rotation point, and the plug rod (7) at the rear end of the swing splitter plate (5) is embedded in the arc groove (9), so that the rear end part of the swing splitter plate (5) can swing along the arc groove (9) under the action of water flow; A circle is drawn with the fixed mounting seat (6) at the front end of the guide plate (3) as the center and the distance between the fixed mounting seat (6) and the arc-shaped mounting seat (8) as the radius; the contour shape of the arc-shaped groove (9) on the arc-shaped mounting seat (8) at the rear end of the guide plate (3) is located on the circle.

2. A ship tugboat shafting fairing according to claim 1, characterized in that: A total of six guide plates (3) are provided between the guide outer cover (1) and the middle sleeve (2), and a total of six guide spaces (4) and six swing splitter plates (5) are provided accordingly.

3. A ship tugboat shafting fairing according to claim 2, characterized in that: The swing splitter plate (5) is arranged at a middle position between two adjacent guide plates (3).

4. A ship tugboat shafting fairing according to claim 2, characterized in that: The swing splitter plate (5) is arranged at a position one-third of the outer side of two adjacent guide plates (3).

5. A ship tugboat shafting fairing according to claim 1, characterized in that: The fixed mounting seat (6) and the arc-shaped mounting seat (8) arranged on the side wall of the guide plate (3) are both arranged as protrusions, and the four insertion rods (7) on the front and rear sides of the swing splitter plate (5) are correspondingly inserted into the fixed mounting seat (6) and the arc-shaped mounting seat (8).

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