Gear lift sail system

Abstract

A gear lifting wind sail system, the deck is fixed with a wind sail base, a lifting rod recovery cabin is arranged inside the deck below the wind sail base, a rack driving device is fixed inside the wind sail base, two rack driving devices are symmetrically fixed on both sides of the wind sail lifting rod, a rack is arranged along the height direction of the outer surface of the wind sail lifting rod, and the rack driving device can drive the wind sail lifting rod. Three sections of sail surfaces are fixed on the wind sail lifting rod, the three sections of sail surfaces are successively nested from top to bottom, a hydraulic limiting device is hingedly connected to the center of each section of sail surface, the hydraulic limiting device is provided with a square shell, a hydraulic cylinder is symmetrically arranged in the shell, a clamping block is arranged at the end of the hydraulic rod, a clamping groove is arranged on the wind sail lifting rod, and the clamping block is clamped into the clamping groove and fixed. A touch switch is arranged at the connecting position of the end portions of adjacent sail surfaces, and the touch switch is signal connected with the hydraulic limiting device. The mast fixed on the ship is used instead of the hydraulic lifting mast, the risk of hydraulic rod leakage is avoided, and the cost of the wind sail is reduced.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding and design, and specifically relates to a gear-driven lifting sail system. Background Technology

[0002] With the promulgation and implementation of new low-carbon emission reduction regulations worldwide, the global shipping and shipbuilding industries are moving towards greener practices. Wind energy utilization is one of the energy-saving technologies proposed in the international ship energy conservation and emission reduction field in recent years. Therefore, in recent years, ocean-going vessels have gradually begun to develop towards wind-powered navigation. Although wind power cannot completely replace ship fuel, it can reduce carbon dioxide emissions and save fuel consumption.

[0003] The principle of wind-assisted propulsion is to utilize the lift and drag generated when air flows over a wind-powered propulsion device to achieve propulsion. Currently, the main types include airfoil sails and rotary sails, all of which are large pieces of equipment placed on the ship's deck, posing a significant challenge to the ship's stability. Furthermore, large equipment requires robust hydraulic rods for operation; hydraulically driven masts are expensive and prone to oil leaks, leading to high costs and safety hazards in shipbuilding. To enable the industrial-scale installation of wind-assisted propulsion devices, a low-cost method is urgently needed. Currently, most wind-assisted propulsion devices move up and down via hydraulic rods, which is costly and risky. Using more conventional and reliable equipment can reduce costs and risks; gear-driven lifting is one option. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a gear-driven lifting sail system, aiming to prevent oil leakage and ensure safety and reliability. The technical solution adopted is as follows:

[0005] A gear-driven sail lifting system includes a sail base fixed on a deck, and a lifting boom recovery compartment located inside the deck and below the sail base. The sail lifting boom passes through the sail base and is recovered into the lifting boom recovery compartment.

[0006] The sail base is equipped with a rack and pinion drive device. Two rack and pinion drive devices are symmetrically fixed on both sides of the sail lifting rod. Racks are symmetrically arranged on both sides along the height direction of the outer surface of the sail lifting rod. Each rack and pinion drive device has an output wheel and a drive wheel. The output wheel meshes with the rack teeth on the outside of the lifting rod.

[0007] The sail lifting mast is fixed with three sail sections, which are stacked sequentially from top to bottom. Each sail section has a hydraulic limiting device hinged at its center. The hydraulic limiting device has a square housing, which is fitted onto the sail lifting mast. Hydraulic cylinders are symmetrically arranged inside the housing. The cylinder body of the hydraulic cylinder is fixed to the housing. A locking block is provided at the end of the hydraulic rod. A locking groove is provided on the sail lifting mast, and the locking block is locked into the locking groove for fixation.

[0008] A first touch switch is provided at the connection point of adjacent sail ends, and a second touch switch is provided on the lower surface of the housing. The first touch switch and the second touch switch are signal connected to the hydraulic cylinder.

[0009] Furthermore, in the aforementioned gear-driven lifting sail system, the drive wheel shaft is connected to a motor, and the drive wheel is connected to the output wheel belt.

[0010] Furthermore, in the aforementioned gear-driven sail lifting system, the hydraulic rod end has an arc-shaped plate, and the two ends of the arc-shaped plate are fixed with the locking blocks. The curvature of the arc-shaped plate is adapted to the curvature of the sail lifting rod, and there are two locking slots, which are respectively opened on both sides of the external rack of the lifting rod.

[0011] In a further embodiment of the aforementioned gear-driven lifting sail system, the angle α formed by the slot is 20°. <a<30°。

[0012] In a further step, the gear-lifting sail system described above has an L-shaped hook connection at the end of adjacent sail surfaces, with the upper sail surface having an L-shaped hook and the lower sail surface having an inverted L-shaped hook, and the first touch switch being fixed to the inverted L-shaped hook.

[0013] Furthermore, in the aforementioned gear-driven lifting sail system, the first and second touch switches are contact sensors. When the first touch switch contacts the L-shaped hook, the touch switch sends a signal to the hydraulic cylinder.

[0014] Furthermore, in the aforementioned gear-driven sail lifting system, the top and bottom of the sail lifting rod are fixed with circular covers.

[0015] Furthermore, in the aforementioned gear-driven lifting sail system, the lower surface of the housing on the first and second sail sections is provided with the second touch switch.

[0016] Furthermore, in the aforementioned gear-driven lifting sail system, the second touch switch is a contact sensor. When the second touch switch comes into contact with the housing located below, the second touch switch sends a signal to the hydraulic cylinder.

[0017] Furthermore, in the aforementioned gear-driven lifting sail system, the diameter of the circular cover is greater than the maximum width of the two racks.

[0018] This invention provides a gear-driven sail lifting system that uses a mast fixed to the ship instead of a hydraulic lifting mast, avoiding the risk of oil leakage from hydraulic components and reducing sail costs. Using gears to raise and lower the sail surface is simple in principle, reliable, and low in cost, simplifying the construction process, reducing design costs, and facilitating the industrial production of sail systems. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure at the first trigger switch;

[0021] Figure 3 This is a top view of the hydraulic limit device.

[0022] Figure 4 This is a diagram illustrating the sail-raising process;

[0023] Among them: 1-sail base, 2-deck, 3-rack drive device, 4-sail lifting rod, 5-hydraulic limit device, 6-sail surface, 7-first trigger switch, 8-circular cover, 9-bottom of the hull, 10-lifting rod recovery compartment, 11-second trigger switch, 12-rack, 51-hydraulic rod, 52-block, 53-arc plate, 61-inverted L-shaped hook, 62-L-shaped hook. Detailed Implementation

[0024] The invention will be further described with reference to the accompanying drawings.

[0025] A gear-driven lifting sail system, such as Figure 1 As shown, a sail base 1 is fixed on deck 2, and a boom recovery compartment 4 is installed inside the deck and below the sail base. The boom passes through the sail base and is recovered into the boom recovery compartment. The boom extends through the deck and can reach as far as the bottom of the hull 9.

[0026] A rack and pinion drive unit 3 is fixed inside the sail base. Two rack and pinion drive units are symmetrically fixed on both sides of the sail lifting mast. Racks 12 are symmetrically arranged left and right along the height direction of the outer surface of the sail lifting mast. The rack and pinion drive unit has an output wheel and a drive wheel. The output wheel meshes with the teeth of the racks on the outside of the lifting mast. A motor is connected to the drive wheel shaft, and the drive wheel is connected to the output wheel by a belt. Circular covers 8 are fixed at the top and bottom of the sail lifting mast. The diameter of the circular covers is larger than the maximum width of the two racks, and the circular covers limit the maximum height of the sail.

[0027] Three sail sections 6 are fixed to the sail lifting mast. The sail sections are designated as the first to third from top to bottom, and the upper sail section can nest inside the lower sail section. Hydraulic limiting devices 5 are hinged at the center of the first, second, and third sail sections. The hydraulic limiting device on the first sail section is always locked. The first sail section is nested outside the second and third sail sections, thus limiting the second and third sail sections during ascent and protecting them after retrieval. Alternatively, the hydraulic limiting device on the first sail section can be omitted, and the sail section can be directly welded to the gear. The hydraulic limiting device has a square housing that fits onto the sail lifting mast. Hydraulic cylinders are symmetrically arranged on both sides inside the housing, and the cylinder bodies are fixed to the housing. Figure 3 As shown, the hydraulic rod 51 has an arc-shaped plate 53 at its end, with locking blocks 52 fixed at both ends of the arc-shaped plate. The curvature of the arc-shaped plate matches the curvature of the sail lifting rod. The sail lifting rod has two slots, each located on either side of the external rack of the lifting rod, with each slot forming an angle α of 20°. <a<30°。

[0028] like Figure 2 As shown, the connection between adjacent sail ends is an L-shaped hook connection. The upper sail has an L-shaped hook 62, and the lower sail has an inverted L-shaped hook 61. The first trigger switch 7 is fixed to the inverted L-shaped hook. The first trigger switch is a contact sensor. When the first trigger switch contacts the L-shaped hook, it sends a signal to the hydraulic cylinder. The function of the first trigger switch is that when the ends of two adjacent sails are connected, that is, when the two adjacent sails reach their maximum distance, the first trigger switch sends a signal to the hydraulic limit device. The hydraulic rod extends towards the sail lifting rod, and the locking block engages in the locking groove. At this time, the position of the sail is fixed.

[0029] A second actuation switch 11 is installed on the lower surface of the housing of the first and second sail sections. This second actuation switch is a contact sensor. When it contacts the lower housing, it sends a signal to the hydraulic cylinder. The function of the second actuation switch is that when two adjacent sail sections reach their closest distance, at the point where the bottom of the upper hydraulic limit device housing contacts the lower hydraulic limit device housing (i.e., at the point where the second actuation switch contacts the lower hydraulic limit device housing), the second actuation switch sends a signal to the hydraulic limit device. The hydraulic rod extends towards the sail lifting rod, and the locking block engages in the slot, thus fixing the sail position.

[0030] like Figure 4 As shown, the process of raising and lowering the sails is as follows:

[0031] Raising the sail:

[0032] The first step in raising the sail is to position the sail lift boom in the sail recovery compartment, with the hydraulic limit devices on the first sail section locked and the hydraulic limit devices on the second and third sail sections open.

[0033] The second step in raising the sail is to activate the rack and pinion drive, which drives the sail lifting boom clockwise, causing the sail to rise. When the first trigger switch between the first and second sail sections is activated, the hydraulic limit device of the second sail section is locked. At this point, the first and second sail sections are fixed on the sail lifting boom and rise accordingly.

[0034] In the third step of raising the sail, when the first trigger switch between the second and third sail sections is activated, the hydraulic limit device of the third sail section is locked. At this time, the first, second, and third sail sections are fixed on the sail lifting mast and rise accordingly.

[0035] The fourth step in raising the sail is to continue driving the rack and pinion drive, turning the sail lifting boom clockwise until it reaches the designated position, then turn off the rack and pinion drive to complete raising the sail.

[0036] Lowering the sails:

[0037] The sail boom moves downwards.

[0038] The second step in lowering the sail is to activate the hydraulic limit device on the third sail section when the bottom of the third sail section descends to the sail base, thus disengaging the third sail section from the sail lifting boom.

[0039] In the third step of lowering the sail, the rack and pinion drive continues to move counterclockwise, and the first and second sail sections move downward with the sail lift. When the second sail section touches the second trigger switch, the hydraulic limit device of the second sail section is opened, and at this time the second sail section is disengaged from the sail lift.

[0040] In the fourth step of lowering the sail, the rack and pinion drive continues to move counterclockwise, and the first section of the sail moves downward with the sail lift. When the first section of the sail touches the second trigger switch, the rack and pinion drive is turned off, and the lowering of the sail is completed.

Claims

1. A gear-driven lifting sail system, characterized in that, A sail base (1) is fixed on the deck (2). A boom recovery compartment (10) is provided inside the deck and below the sail base. The sail boom (4) passes through the sail base and is recovered into the boom recovery compartment. The sail base is fixed with a rack drive device (3), and two rack drive devices are symmetrically fixed on both sides of the sail lifting rod. Racks (12) are symmetrically arranged on the left and right sides along the height direction of the outer surface of the sail lifting rod. The rack drive device has an output wheel and a drive wheel. The output wheel meshes with the external rack teeth of the lifting rod. The sail lifting rod is fixed with three sail sections (6), which are stacked sequentially from top to bottom. Each sail section is hinged with a hydraulic limiting device (5) at its center. The hydraulic limiting device has a square housing, which is fitted onto the sail lifting rod. Hydraulic cylinders are symmetrically arranged inside the housing, and the cylinder body of the hydraulic cylinder is fixed to the housing. A locking block (52) is provided at the end of the hydraulic rod (51), and a locking groove is provided on the sail lifting rod. The locking block is locked into the locking groove. The end of the hydraulic rod has an arc plate (53), and the locking block is fixed at both ends of the arc plate. The arc of the arc plate is adapted to the arc of the sail lifting rod. There are two locking grooves, which are respectively opened on both sides of the external rack of the lifting rod. A first touch switch (7) is provided at the connection point of adjacent sail ends, and a second touch switch (11) is provided on the lower surface of the housing. The first touch switch and the second touch switch are signal connected to the hydraulic cylinder. The connection point of adjacent sail ends is an L-shaped hook connection. The upper sail has an L-shaped hook (62), and the lower sail has an inverted L-shaped hook (61). The first touch switch is fixed on the inverted L-shaped hook. The first and second touch switches are contact sensors. When the first touch switch contacts the L-shaped hook, the touch switch sends a signal to the hydraulic cylinder. The second touch switch is provided on the lower surface of the housing of the first and second sail sections; the second touch switch is a contact sensor, and when the second touch switch comes into contact with the housing located below, the second touch switch sends a signal to the hydraulic cylinder.

2. The gear-driven lifting sail system according to claim 1, characterized in that, The drive wheel shaft is connected to a motor, and the drive wheel is connected to the output wheel belt.

3. The gear-driven lifting sail system according to claim 1, characterized in that, The angle α formed by the slot is 20°. <a<30°。 4. The gear-driven lifting sail system according to claim 1, characterized in that, The top and bottom of the sail lifting rod are fixed with circular covers (8).

5. A gear-driven lifting sail system according to claim 4, characterized in that, The diameter of the circular cover is greater than the maximum width of the two racks.

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