Ship brake sail set of closed structure

Abstract

The utility model provides a ship brake sail group with a closed structure, which is characterized in that a plurality of closed ropes (6) are additionally arranged on a balancing weight (3) at the lower part of a sail group (1), and the length of the closed ropes (6) is smaller than that of canvas (2) in the vertical direction; the lower end of the closed rope (6) is connected with the balancing weight (3), and the upper end of the closed rope (6) bypasses the incident flow surface of the canvas (2) and then is connected with the connecting belts (7) at opposite positions; the vertical section of the main body of the canvas (2) forms a J-shaped streamline structure with a directional opening characteristic under the constraint action of the closed rope (6), and the opening end of the J-shaped structure is arranged towards the stern transom plate; the vertical height H of the opening section of the J-shaped structure meets the condition that H is larger than or equal to 1 / 2 L, and L is the total unfolding length of the canvas (2) body in the vertical direction. The resistance of the sail group can be improved, and the folding difficulty of the sail group is not increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship brake technology field especially a sail group structure improvement design for ship brake. BACKGROUND

[0002] The existing ship brake device (such as invention patent CN202210781257.X) realizes resistance braking through the combination of sailcloth and counterweight block, but the sail group is excessively lifted under the impact of high-speed water flow, and then the sail group's resistance increasing ability is insufficient, and the resistance increasing effect is reduced. Therefore, the sail group structure needs to be optimized to improve the resistance increasing ability. SUMMARY

[0003] The utility model solves the technical problems that the sail group is excessively lifted under the impact of high-speed water flow, and then the sail group's resistance increasing ability is insufficient.

[0004] The utility model provides a technical scheme:

[0005] A closed structure's ship brake sail group (1) comprising sailcloth (2), counterweight block (3) and traction rope (5), characterized in that:

[0006] The sail group (1) is additionally provided with a plurality of closed ropes (6) on the lower counterweight block (3), and the length of the closed rope (6) is less than the length of the sailcloth (2) in the vertical direction.

[0007] The lower end of the closed rope (6) is connected with the counterweight block (3), and the upper end is connected with the connecting belt (7) in the opposite position after passing through the main flow-encountering surface of the sailcloth (2).

[0008] The vertical section of the sailcloth (2) forms a J-shaped streamline structure with a directional opening feature under the constraint of the closed rope (6), and the opening end of the J-shaped structure is arranged towards the stern bulkhead direction.

[0009] The vertical height H of the opening section of the J-shaped structure satisfies H≥1 / 2L, wherein L is the total length of the sailcloth (2) in the vertical direction.

[0010] The utility model has the advantages of:

[0011] The J-shaped flow channel structure formed by the closed rope can reduce the insufficient braking force caused by the lifting of the sail group in water. The water flow in the sail group is turned by 90 degrees, and the resistance is significantly increased.

[0012] The directional opening structure makes the fluid produce directional deflection and forms additional pressure difference.

[0013] When the sail group is retracted, the water flow can flow out from both sides, reducing the difficulty of retracting the sail group. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 : Schematic diagram of the overall structure of the sail set (front view);

[0015] Figure 2 : Side view of the sail set (side view);

[0016] Figure 3 : Side view of the sail set when it is underwater vertically;

[0017] Sail set, 2 - sail cloth, 3 - ballast, 4 - structure for allowing the internal passage of the traction rope, 5 - traction rope, 6 - closing rope, 7 - connecting band DETAILED DESCRIPTION

[0018] A plurality of closing ropes are additionally arranged on the lower ballast of the sail set, and the length of the closing ropes is less than the length of the sail cloth in the vertical direction;

[0019] The lower end of the closing rope is connected with the ballast, and the upper end is connected with the connecting band at the opposite position after passing through the front flow surface of the sail cloth main body;

[0020] Under the constraint of the closing rope, the vertical section of the sail cloth main body forms a J-shaped streamline structure with a directional opening feature, and the opening end of the J-shaped structure is arranged towards the direction of the transom bulkhead;

[0021] The vertical height H of the opening section of the J-shaped structure satisfies: H ≥ 1 / 2L, wherein L is the total length of the sail cloth main body in the vertical direction.

Claims

1. A closed structure of a ship brake sail group (1) comprising a sail cloth (2), a counterweight (3) and a traction rope (5), characterized in that: a plurality of closing ropes (6) are additionally arranged on the lower counterweight (3) of the sail group (1), and the length of the closing rope (6) is less than the length of the sail cloth (2) in the vertical direction; the lower end of the closing rope (6) is connected with the counterweight (3), and the upper end is connected with the connecting belt (7) in the opposite position after passing through the main flow surface of the sail cloth (2); the vertical section of the main body of the sail cloth (2) forms an open streamlined structure towards the direction of the transom under the constraint of the closing rope (6), and this structure is defined as a J-shaped structure; the vertical height H of the open section of the J-shaped structure satisfies H ≥ 1 / 2L, wherein L is the total length of the main body of the sail cloth (2) in the vertical direction.

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