CN117864296A - Variable structure wave self-adaptive catamaran - Google Patents

Abstract

The invention discloses a variable-structure wave self-adaptive catamaran, which comprises two pontoon hulls (1) symmetrically distributed along a catamaran roll axis, a deck platform (4) positioned between the two pontoon hulls (1) and a power propeller (5) arranged at the tail part of the pontoon hulls (1), wherein the deck platform (4) is arranged on the two pontoon hulls (1) through a hydraulic deformation mechanism (3), so that the height of the deck platform (4) and the distance between the two pontoon hulls (1) can be adjusted.

Description

Variable structure wave adaptive catamaran

Technical Field

The invention relates to a variable-structure wave-adaptive catamaran, belonging to the field of ship machinery and equipment.

Background technique

The offshore stable platform is an important ship facility that provides a stable operating space for various ship operating equipment. With the acceleration of the pace of ocean exploration, the demand for offshore stable platforms is gradually increasing. For example, the safe take-off and landing of drones during coordinated operations with drone boats, the normal operation of sonar and other equipment during seabed topography surveys, and the normal operation of related equipment during offshore salvage all urgently require a high degree of stability of the platform. However, wind and waves always affect the navigation and operation of ships, making the development and construction of offshore stable platforms full of challenges.

In order to reduce the shaking of ships caused by wind and waves, in addition to equipping ships with anti-roll devices, the structural optimization design of the ship can also increase the stability of the hull to a certain extent. Catamarans are more stable than traditional monohulls, and the area of the deck platform is much larger than that of monohulls with the same displacement. At present, with the application of the cutting-edge technology of wave adaptation in catamarans, catamarans have become more stable and can maintain the stability of the deck platform even when shaking with the waves.

Since the structure of the wave adaptive catamaran is fixed and the platform load is generally small, when a large load is required, the length and width of the hull can only be increased. At this time, another catamaran can only be built, which greatly increases the cost.

Therefore, how to design a catamaran that has strong wave adaptability while being able to change the space occupied by the hull and meet the requirements of load equipment has become a technical problem that needs to be solved urgently.

Summary of the invention

In view of the deficiencies in the prior art, the present invention provides a variable structure wave adaptive catamaran, comprising two pontoon hulls symmetrically distributed along the roll axis of the catamaran, a deck platform located between the two pontoon hulls, and a power propeller installed at the tail of the pontoon hull. The characteristic of the present invention is that the deck platform is installed on the two pontoon hulls by a hydraulic deformation mechanism, so that the height of the deck platform and the distance between the two pontoon hulls can be adjusted.

Preferably, the hydraulic deformation mechanism includes two groups of hydraulic deformation mechanisms respectively arranged on the deck platform along the roll axis direction of the double hull, and each of the hydraulic deformation mechanisms includes: two support bases respectively connected to the two pontoon hulls, the two support bases are symmetrically constructed, and each support base is provided with a first hydraulic cylinder device, a movable rod and a connecting rod, wherein the lower end of the movable rod is connected to the support base through a rotating pair, and the upper end of the movable rod is connected to the first end of the connecting rod through a rotating pair; a first hydraulic cylinder device, whose hydraulic cylinder end is connected to the support base through a rotating pair, and whose hydraulic rod end is connected to the movable rod and can move with the movable rod; and a second hydraulic cylinder device located between the two symmetrical support bases, the hydraulic cylinder end of the second hydraulic cylinder device is installed on the deck platform, and the second ends of the connecting rods on the two support bases are connected to the hydraulic rod end of the second hydraulic cylinder device.

Preferably, flat side slide rails are respectively arranged at both ends of the double hull roll axis direction of the deck platform, and a pin is arranged on the movable rod, and the pin moves along the slide rail within its stroke.

Preferably, the support base is mounted on the buoy hull via a spring shock absorber.

Preferably, the deck platform further comprises: a moon pool and a winch and a cable rack arranged on at least one side of the moon pool.

Preferably, the deck platform further comprises a guardrail.

Preferably, the buoy hull is an internal hollow structure.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention utilizes the movement coordination between the hydraulic telescopic mechanism and the movable rod and is applied to a catamaran, and can adjust the height of the deck platform and the span of the two pontoon hulls as required, so as to make the catamaran more wave-adaptive and more stable.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an overall assembly diagram of the device of the present invention.

FIG. 2 is a structural diagram of the hydraulic deformation mechanism of the device of the present invention.

FIG. 3 is a structural diagram of the hull platform of the device of the present invention.

Figure 4 is a diagram of the normal working state of the catamaran.

FIG. 5 is a diagram showing the catamaran platform in the lowest state.

FIG. 6 is a diagram showing the catamaran platform raised to its highest state.

Detailed ways

The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

As shown in FIG. 1 , the present invention is a variable structure wave adaptive catamaran, which includes two pontoon hulls 1 , four spring shock absorbers 2 , two groups of hydraulic deformation mechanisms 3 , a deck platform 4 and two power thrusters 5 .

The pontoon hull 1 is a hollow structure with a certain space inside for placing power batteries, small generators, engines and other equipment, and the outside can carry the deck platform 4 and the operating equipment on the platform. The two pontoon hulls 1 are symmetrically distributed along the roll axis of the catamaran. The power propeller 5 is installed at the tail of the pontoon hull, and its function is to provide power to the hull to meet the navigation needs of the catamaran.

The spring shock absorber 2 is installed on the surface of the buoy hull. Two spring shock absorbers 2 are placed in front and behind each buoy hull, for a total of four. The elastic deformation of the spring is mainly used to compensate for the shaking of the hull in a small range.

Two sets of hydraulic deformation mechanisms 3 are respectively installed at the front and rear ends of the deck platform 4, that is, the two ends along the roll axis direction of the catamaran. Each set of hydraulic deformation mechanisms 3 is connected to two spring shock absorbers 2 through the left and right support bases, and the overall structure is symmetrically distributed along the roll axis. The lifting and lowering of the deck platform 4 is controlled by using two sets of identical and symmetrically distributed hydraulic deformation mechanisms 3 arranged at both ends. The deck platform 4 is connected to the hydraulic deformation mechanism 3 through the flat side slide rails 12 installed at both ends, and is mainly used to carry operating equipment.

As shown in FIG. 2 , each hydraulic deformation mechanism includes two left and right support bases 6 , a first hydraulic cylinder device 7 and a second hydraulic cylinder device 11 , a movable rod 8 , a connecting rod 9 , and a pin 10 , and the overall structure is symmetrical along the second hydraulic cylinder device 11 .

The support base 6 is installed on the spring shock absorber 2, connected to the movable rod 8 and the first hydraulic cylinder device 7, and supports the movement of the entire mechanism. Specifically, the lower end of the movable rod 8 is connected to the support base 6 through a rotating pair, and the upper end is connected to the first end of the connecting rod 9 through a rotating pair. The hydraulic cylinder end of the first hydraulic cylinder device 7 is connected to the support base 6, and there is a rotating pair at the connection; its hydraulic rod end is connected to the movable rod 8 and can move with the movable rod 8. The retraction and extension of the hydraulic rod of the first hydraulic cylinder device 7 can change the lateral span of the pontoon hull, that is, the width of the catamaran. When the movable rod 8 rotates, it drives the first hydraulic cylinder device 7 to rotate, thereby realizing the lifting function of the platform.

The first end of the connecting rod 9 is connected to the movable rod 8, and the second end is connected to the hydraulic rod end of the second hydraulic cylinder device 11, which mainly plays the role of connecting the rod to transmit motion. The pin 10 is arranged on the movable rod 8, preferably near the upper end, and is connected to the flat side slide rail 12 shown in Figure 3, and can slide within the slide rail stroke. The flat side slide rail 12 is arranged at both ends of the deck platform 4, and the hydraulic cylinder end of the second hydraulic cylinder device 11 is installed on the deck platform 4. The retraction and extension of the second hydraulic cylinder 11 can change the width of the hull.

As shown in FIG3 , the deck platform 4 mainly includes a flat side slide rail 12, a winch 13, a cable rack 14, a moon pool 15, and a guardrail 16. The flat side slide rail 12 is installed on both ends of the deck platform 4, and the pin shaft 10 moves within its stroke, which plays a stabilizing role in the movement of the platform. Reasonable design of the slide rail stroke can also play a motion limiting effect.

The moon pool 15 is arranged in the middle of the deck platform 4 to provide space for lowering equipment, and the size of the moon pool can be customized according to the size requirements of the equipment. The winch 13 and the cable rack 14 are arranged on at least one side of the moon pool 15, and the two can be used together to lower related operating equipment, such as seabed detection robots, sonar and other detection equipment. Preferably, winches and cable racks can be arranged on both sides of the moon pool 15.

Guardrails 16 are provided on both lateral sides of the deck platform 4 to provide support and protection for the equipment installation and commissioning personnel of the deck platform 4.

The use process of the variable structure wave adaptive catamaran of the present invention is as follows:

When the catamaran of the present invention encounters wave disturbance, it can be compensated by the spring shock absorber 2 and the hydraulic deformation mechanism 3, so that the stability of the deck platform can be maintained when it sways with the waves. The state of the catamaran when working normally is shown in Figure 4. At this time, the platform height is moderate. When encountering different sea conditions or according to equipment requirements, the height of the hull platform 4 can be adjusted. The movable rod 8 and the second hydraulic cylinder device 11 are mainly responsible for the lifting function of the platform, and the connecting rod 9 and the first hydraulic cylinder device 7 are mainly responsible for changing the span of the pontoon catamaran. As shown in Figure 5, the hull platform 4 of the catamaran can be lowered to the lowest state. At this time, the center of gravity of the catamaran is the lowest, the stability of the hull is improved, and it is convenient to lower the equipment; the hull platform 4 can also be raised to the highest state as shown in Figure 6. At this time, the platform is raised and the stability is reduced, but the waves can be prevented from hitting the platform.

Claims (7)

1. A variable structure wave adaptive catamaran, comprising two pontoon hulls (1) symmetrically distributed along the roll axis of the catamaran, a deck platform (4) located between the two pontoon hulls (1) and a power propeller (5) installed at the tail of the pontoon hull (1), characterized in that: The deck platform (4) is installed on the two pontoon hulls (1) via a hydraulic deformation mechanism (3), so that the height of the deck platform (4) and the distance between the two pontoon hulls (1) can be adjusted. 2. The wave adaptive catamaran according to claim 1, characterized in that: The hydraulic deformation mechanism (3) comprises two groups of hydraulic deformation mechanisms (3) respectively arranged on the deck platform (4) along the direction of the double hull roll axis, and each of the hydraulic deformation mechanisms (3) comprises: Two support bases (6) respectively connected to the two buoy hulls (1), the two support bases (6) being symmetrically constructed, each support base (6) being provided with a first hydraulic cylinder device (7), a movable rod (8) and a connecting rod (9), wherein the lower end of the movable rod (8) is connected to the support base (6) via a rotating pair, and the upper end of the movable rod (8) is connected to the first end of the connecting rod (9) via a rotating pair; the first hydraulic cylinder device (7), the hydraulic cylinder end of which is connected to the support base (6) via a rotating pair, and the hydraulic rod end of which is connected to the movable rod (8) and can move with the movable rod (8); and A second hydraulic cylinder device (11) is located between two symmetrical support bases (6), wherein a hydraulic cylinder end of the second hydraulic cylinder device (11) is mounted on the deck platform (4), and a second end of a connecting rod (9) on the two support bases (6) is connected to a hydraulic rod end of the second hydraulic cylinder device (11). 3. The wave adaptive catamaran according to claim 2 is characterized in that flat side slide rails (12) are respectively arranged at both ends of the double hull roll axis direction of the deck platform (4), and a pin shaft (10) is arranged on the movable rod (8), and the pin shaft (10) moves along the slide rail (12) within its stroke. 4. The wave adaptive catamaran according to claim 1 or 2, characterized in that the support base (6) is mounted on the pontoon hull (1) via a spring shock absorber (2). 5. The wave adaptive catamaran according to claim 1 or 2, characterized in that the deck platform (4) further comprises: a moon pool (15) and a winch (13) and a cable rack (15) arranged on at least one side of the moon pool (15). 6. The wave adaptive catamaran according to claim 6, characterized in that the deck platform (4) further comprises a guardrail (16). 7. The wave adaptive catamaran according to claim 1, characterized in that the pontoon hull (1) is an internal hollow structure.