Double-shaft sail folding and retracting device

Abstract

The present invention relates to a double-shaft sail folding and retracting device, comprising an auxiliary supporting sail face which is vertically arranged, wherein a main sail face is rotationally mounted at the top of the auxiliary supporting sail face; rotating shafts are coaxially mounted on two opposite sides of the top of the auxiliary supporting sail face; an assembling groove is upwardly provided in the middle of the bottom end of the main sail face; a rotating support is embedded in an inner top surface of the assembling groove; the rotating support is of an inverted-U-shaped structure; and two vertical arms of the rotating support are rotationally mounted on the rotating shafts at the two sides, respectively, such that an overturning structure for the rising and falling of a sail is achieved by means of a double-shaft structure. Compared with a single shaft, the load on the shaft is greatly reduced, thereby enabling the overall structure of the sail to be safer and more reliable, and prolonging the service life.

Description

A dual-axis sail folding and recovery device Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a dual-axis sail folding and recovery device. Background Art

[0002] Wind-driven sailboats play a vital role in auxiliary propulsion of ships. By utilizing the auxiliary thrust generated by wind acting on the sails, they can reduce the output power of the main engine while maintaining the ship's speed, significantly reducing energy consumption and power loss, which is in line with the new development trend of green propulsion of ships.

[0003] However, the introduction of sails on traditional ships also brings some problems. Technical issues

[0004] In the existing technology, a rotating connection structure is formed between the sail and the supporting sail surface through a single shaft. The single shaft bears a large load and is very prone to vibration, resulting in energy loss and structure-borne noise. It also accelerates the wear of the shaft itself, affecting its service life. Moreover, when the single shaft rotates, the turning force arm is small. Not only is the force required for flipping very large, the shaft is also subjected to a large torque and is very likely to break due to exceeding the allowable torsional shear stress. In addition, the shaft itself has a large diameter due to strength and stiffness requirements, and the overall weight is heavy. Technical Solutions

[0005] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a rationally structured dual-axis sail folding and recovery device, which realizes the flip structure of sail raising and lowering through the dual-axis structure, greatly reducing the load on the axis compared to a single axis, making the overall structure of the sail safer and more reliable.

[0006] The technical solutions adopted in the present invention are as follows:

[0007] A dual-axis sail folding and recovery device includes a vertically arranged auxiliary support sail surface, a main sail surface is rotatably installed on the top of the auxiliary support sail surface, and rotating shafts are coaxially installed on opposite sides of the top of the auxiliary support sail surface. A mounting groove is opened upward in the middle of the bottom end of the main sail surface, and a rotating bracket is embedded in the top surface of the mounting groove. The rotating bracket has an inverted U-shaped structure, and the two vertical arms of the rotating bracket are rotatably installed with the rotating shafts on both sides respectively.

[0008] As a further improvement of the above technical solution:

[0009] It also includes a linear drive mechanism, the output end of the linear drive mechanism is rotatably mounted with a support, and the top end of the support is fixedly mounted on the middle part of the top surface of the rotating bracket.

[0010] The linear drive mechanism is an electric cylinder, the output end of the electric cylinder faces upward, the bottom end of the electric cylinder is rotatably mounted on the auxiliary support sail surface, and the top output end of the electric cylinder is rotatably mounted on the rotating bracket.

[0011] The hinge point between the support and the linear drive mechanism, the assembly point between the support and the rotating bracket, and the axis of the rotating shaft are located at the three corners of the triangle.

[0012] When the main sail is in an upright state, the support is located directly above the linear drive mechanism and is arranged vertically, and the rotating shaft is located on the side of the support facing the flipping and folding direction of the main sail.

[0013] The sides of the auxiliary support sail and the rotating bracket facing each other are respectively embedded with an axle seat and a rotating shaft sleeve, which are respectively mounted on both ends of the rotating shaft to form a flipping structure of the main sail relative to the auxiliary support sail.

[0014] The rotating shaft is a three-section stepped shaft, the middle section is sleeved in the shaft seat, the large end forms a flange structure that fits and locks with the end of the shaft seat, and the small end extends into the rotating shaft sleeve to form a rotating structure.

[0015] A shaft sleeve seat is sleeved on the outside of the rotating shaft sleeve, and the shaft sleeve seat is embedded in the vertical arm of the rotating bracket.

[0016] The bottom end of the auxiliary support sail is mounted on a base for horizontal rotation via a slewing support bearing, the bottom surface of the base is mounted on a reinforced foundation, and the reinforced foundation is mounted on the hull deck; a support seat is mounted on the hull deck laterally outside the reinforced foundation, and the main sail surface after flipping and folding is supported on the top surface of the support seat.

[0017] A buffer is installed between the top end of the auxiliary support sail surface and the rotating bracket, so that the instantaneous load of the main sail surface standing upright relative to the auxiliary support sail surface is buffered. Beneficial effects

[0018] The present invention has a compact and reasonable structure and is easy to operate. The rotating shafts coaxially arranged on both sides of the top surface of the auxiliary support sail are respectively connected to the rotating brackets in the main sail surface to form a dual-axis rotation structure between the main sail surface and the auxiliary support sail surface. This not only realizes the flip structure of the sail raising and lowering, but also greatly reduces the load on the shaft compared to a single shaft, reduces or even avoids the generation of resonance and noise, and reduces shaft wear, making the overall structure of the sail safer and more reliable, and prolonging the service life.

[0019] The present invention also includes the following advantages:

[0020] Combined with the support, the linear drive mechanism applies force to the support, causing the main sail surface to flip and recover relative to the auxiliary support sail surface. Compared with the single-axis structure, the dual-axis structure not only significantly reduces the shaft diameter and shaft length, effectively reducing the overall weight, but also increases the flipping force arm, effectively reducing the force required for flipping, effectively reducing power requirements, and reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic structural diagram of the present invention.

[0022] FIG2 is a partial enlarged view of point A in FIG1 .

[0023] FIG3 is a top view of FIG1 .

[0024] FIG4 is a left side view of FIG1.

[0025] FIG5 is a schematic diagram of the sail of the present invention in a folded and retracted state.

[0026] Among them: 1. Hull deck; 2. Strengthening foundation; 3. Base; 4. Slewing support bearing; 5. Auxiliary support sail surface; 6. Main sail surface; 7. Linear drive mechanism; 8. Rotating shaft; 9. Support; 10. Buffer; 11. Support seat;

[0027] 51. Axle seat;

[0028] 60. Rotating bracket; 61. Rotating shaft sleeve; 62. Shaft sleeve seat. Modes for Carrying Out the Invention

[0029] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0030] As shown in Figure 1, a dual-axis sail folding and recovery device of this embodiment includes a vertically arranged auxiliary support sail surface 5, a main sail surface 6 is rotatably installed on the top of the auxiliary support sail surface 5, and rotating shafts 8 are coaxially installed on the opposite sides of the top of the auxiliary support sail surface 5. A mounting groove is opened upward in the middle of the bottom end of the main sail surface 6, and a rotating bracket 60 is embedded in the top surface of the mounting groove. The rotating bracket 60 is an inverted U-shaped structure, and the two vertical arms of the rotating bracket 60 are rotatably installed with the rotating shafts 8 on both sides respectively.

[0031] In this embodiment, the rotating shafts 8 coaxially arranged on both sides of the top surface of the auxiliary supporting sail surface 5 are respectively connected to the rotating brackets 60 in the main sail surface 6 to form a dual-axis rotation structure between the main sail surface 6 and the auxiliary supporting sail surface 5, thereby realizing a flip structure for raising and lowering the sail, and greatly reducing the load on the shaft compared to a single-axis structure.

[0032] In this embodiment, the double shafts only bear the weight of the sail surface itself, and the required shaft diameter is small, thereby effectively reducing the overall weight of the sail and saving energy consumption in the operation of the sailboat.

[0033] It also includes a linear drive mechanism 7, the output end of the linear drive mechanism 7 is rotatably mounted with a support 9, the top of the support 9 is fixedly mounted on the middle of the top surface of the rotating bracket 60; the linear drive mechanism 7 applies force to the support 9, thereby driving the main sail surface 6 to flip relative to the auxiliary support sail surface 5.

[0034] In this embodiment, the main sail surface 6 is raised or dumped for recovery by the extension or expansion of the linear drive mechanism 7 .

[0035] The linear drive mechanism 7 is an electric cylinder, the output end of the electric cylinder is facing upward, the bottom end of the electric cylinder is rotatably mounted on the auxiliary support sail surface 5, and the top output end of the electric cylinder is rotatably mounted on the rotating bracket 60. Under the action drive of the electric cylinder, the main sail surface 6 can flip relative to the auxiliary support sail surface 5 smoothly, stably and reliably.

[0036] As shown in FIG3 and FIG4 , the hinge point between the support 9 and the linear drive mechanism 7 , the mounting point between the support 9 and the rotating bracket 60 , and the axis of the rotating shaft 8 are located at the three corners of a triangle.

[0037] In this embodiment, in combination with the support 9, the linear drive mechanism 7 applies force to the support 9, causing the main sail surface 6 to flip and recover relative to the auxiliary support sail surface 5. Compared with the single-axis structure, the dual-axis structure not only significantly reduces the shaft diameter and shaft length, effectively reducing the overall weight, but also increases the flipping force arm, effectively reducing the force required for flipping, effectively reducing power requirements, and reducing energy loss.

[0038] When the main sail surface 6 is in an upright state, the support 9 is located directly above the linear drive mechanism 7 and is arranged vertically, and the rotating shaft 8 is located on the side of the support 9 facing the flipping and folding direction of the main sail surface 6.

[0039] In this embodiment, the rotating shaft 8 only serves as the fulcrum for the flipping of the main sail surface 6, which solves the problem of torque generated by the central axis in a single-group structure; the main sail surface 6 is hingedly connected to the electric cylinder through the support 9, and the electric cylinder drives the sail surface to rise or lie down through the movement of the telescopic shaft. At the same time, the length of the support 9 can just make the electric cylinder always perpendicular to the ground when the sail surface is raised or laid down. In this way, the telescopic shaft of the electric cylinder is only subjected to axial force, which effectively avoids damage to the electric cylinder itself due to large radial force.

[0040] As shown in Figure 2, the auxiliary support sail surface 5 and the rotating bracket 60 are respectively embedded with an axle seat 51 and a rotating shaft sleeve 61 on the facing sides. The axle seat 51 and the rotating shaft sleeve 61 are respectively mounted on the two ends of the rotating shaft 8 to constitute the flipping structure of the main sail surface 6 relative to the auxiliary support sail surface 5.

[0041] The rotating shaft 8 is a three-section stepped shaft, the middle section of which is mounted in the shaft seat 51, the large end of which constitutes a flange structure that fits and locks with the end of the shaft seat 51, and the small end of which extends into the rotating sleeve 61 to constitute a rotating structure, effectively ensuring the smoothness and stability of the flipping of the main sail surface 6 relative to the auxiliary support sail surface 5.

[0042] A sleeve seat 62 is sleeved on the outside of the rotating sleeve 61 , and the sleeve seat 62 is embedded in the vertical arm of the rotating bracket 60 to achieve the installation of the rotating sleeve 61 on the rotating bracket 60 .

[0043] The bottom end of the auxiliary support sail surface 5 is mounted on the base 3 for horizontal rotation via a slewing support bearing 4. The bottom surface of the base 3 is mounted on the reinforced foundation 2, and the reinforced foundation 2 is mounted on the hull deck 1. A support seat 11 is installed on the hull deck 1 located laterally outside the reinforced foundation 2, and the main sail surface 6 after flipping and folding is supported on the top surface of the support seat 11, as shown in Figure 5.

[0044] A buffer member 10 is installed between the top of the auxiliary support sail surface 5 and the rotating bracket 60, so that the instantaneous load when the main sail surface 6 stands upright or tilts relative to the auxiliary support sail surface 5 can be buffered, thereby improving the structural safety.

[0045] In this embodiment, the buffer member 10 may be a spring structure, which is used to buffer the instantaneous load when the main sail surface 6 flips upward relative to the auxiliary support sail surface 5 to an upright position or tilts down.

[0046] During use, when the mainsail surface 6 needs to be lowered, the electric cylinder moves upward (expands), and the sail is flipped and tilted downward by the support 9 under the action of the electric cylinder. When tilting, the buffer member 10 is stressed and plays a role in buffering the load until the sail surface falls; when the mainsail surface 6 needs to be raised, the electric cylinder moves downward (contracts), and the sail is gradually flipped and raised upward under the traction of the electric cylinder until the sail surface is completely upright and raised.

[0047] The present invention not only realizes the flip structure of the sail raising and lowering, but also greatly reduces the load of the shaft compared to a single shaft, reduces or even avoids the generation of resonance and noise, reduces shaft wear, makes the overall structure of the sail safer and more reliable, and improves its service life.

[0048] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any modifications may be made within the scope of protection of the present invention.

Claims

1. A dual-axis sail folding and recovery device, comprising a vertically arranged auxiliary support sail surface (5), a main sail surface (6) being rotatably mounted on the top of the auxiliary support sail surface (5), characterized in that: The auxiliary support sail surface (5) has rotating shafts (8) coaxially mounted on opposite sides of the top, and a mounting groove is provided upwardly in the middle of the bottom end of the main sail surface (6). A rotating bracket (60) is embedded in the top surface of the mounting groove. The rotating bracket (60) is an inverted U-shaped structure, and two vertical arms of the rotating bracket (60) are rotatably mounted on the rotating shafts (8) on both sides respectively.

2. A dual-axis sail folding and recovery device as claimed in claim 1, characterized in that: It also includes a linear drive mechanism (7), the output end of the linear drive mechanism (7) is rotatably mounted with a support (9), and the top end of the support (9) is fixedly mounted on the middle part of the inner top surface of the rotating bracket (60).

3. A dual-axis sail folding and recovery device as claimed in claim 2, characterized in that: The linear drive mechanism (7) is an electric cylinder, the output end of the electric cylinder faces upward, the bottom end of the electric cylinder is rotatably mounted on the auxiliary support sail surface (5), and the top output end of the electric cylinder is rotatably mounted on the rotating bracket (60).

4. A dual-axis sail folding and recovery device as claimed in claim 2, characterized in that: The hinge point between the support (9) and the linear drive mechanism (7), the mounting point between the support (9) and the rotating bracket (60), and the axis of the rotating shaft (8) are located at three corners of a triangle.

5. A dual-axis sail folding and recovery device as claimed in claim 2, characterized in that: When the main sail surface (6) is in an upright state, the support (9) is located directly above the linear drive mechanism (7) and is arranged vertically, and the rotating shaft (8) is located on the side of the support (9) facing the flipping and folding direction of the main sail surface (6).

6. A dual-axis sail folding and recovery device as claimed in claim 1, characterized in that: The auxiliary support sail surface (5) and the rotating bracket (60) are respectively embedded with an axle seat (51) and a rotating shaft sleeve (61) on the facing sides thereof. The axle seat (51) and the rotating shaft sleeve (61) are respectively mounted on both ends of the rotating shaft (8) to form a flipping structure of the main sail surface (6) relative to the auxiliary support sail surface (5).

7. A dual-axis sail folding and recovery device as claimed in claim 6, characterized in that: The rotating shaft (8) is a three-section stepped shaft, the middle section of which is sleeved in the shaft seat (51), the large end of which forms a flange structure that fits and locks with the end of the shaft seat (51), and the small end of which extends into the rotating shaft sleeve (61) to form a rotating structure.

8. A dual-axis sail folding and recovery device as claimed in claim 6, characterized in that: The rotating shaft sleeve (61) is sleeved with a shaft sleeve seat (62) on its exterior, and the shaft sleeve seat (62) is embedded in the vertical arm of the rotating bracket (60).

9. A dual-axis sail folding and recovery device as claimed in claim 1, characterized in that: The bottom end of the auxiliary support sail surface (5) is mounted on the base (3) via a slewing support bearing (4) for horizontal rotation, the bottom surface of the base (3) is mounted on the reinforced foundation (2), and the reinforced foundation (2) is mounted on the hull deck (1); a support seat (11) is mounted on the hull deck (1) outside the lateral side of the reinforced foundation (2), and the main sail surface (6) after flipping and folding is supported on the top surface of the support seat (11).

10. The dual-axis sail folding and recovery device according to claim 1, characterized in that: A buffer member (10) is installed between the top end of the auxiliary support sail surface (5) and the rotating bracket (60), so that the instantaneous load of the main sail surface (6) standing upright relative to the auxiliary support sail surface (5) is buffered.

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