A lifeboat with adjustable center of gravity

Abstract

The utility model discloses an adjustable center of gravity's lifeboat relates to lifeboat production technical field, including ship body, the top of ship body is equipped with the guardrail, and the ship body is welded with the mounting panel, and the mounting panel top end is fixedly connected with the motor box for driving the ship body, and the mounting panel top one end is fixedly connected with the rudder, and the center of gravity adjusting cavity is established between the ship body and the mounting panel, and two weight blocks are symmetrically arranged in the center of gravity adjusting cavity, the utility model discloses the setting can drive the removal of heavy block and change horizontal position, realizes the coarse adjustment of lifeboat center of gravity, through the setting of reset spring, can ensure that the flexible connection between the removal of block and weight block is always stable, through the setting of track board, can provide the meshing basis for transmission gear, realizes the accurate movement of counterweight along track board, and then realizes the fine adjustment of center of gravity, solves the problem that the traditional lifeboat only relies on the adjustment component and carries out the coarse adjustment, can not be partial to small range center of gravity deviation, leads to the problem of poor navigation stability.

Description

Technical Field

[0001] This utility model relates to the field of lifeboat manufacturing technology, and in particular to a lifeboat with an adjustable center of gravity. Background Technology

[0002] In lifeboat design, the stability of the center of gravity is directly related to navigation safety and crew comfort. Especially in coastal or inland waterway rescue scenarios with frequent winds and waves, if the slight swaying of the hull cannot be corrected in time, it can easily cause panic among personnel, displacement of equipment, and even exacerbate the risk of the hull tilting. Traditional adjustable center-of-gravity lifeboats are equipped with only coarse adjustment components such as lead screws and movable weights. By driving the movable weights to slide laterally along the hull, they correct large center-of-gravity shifts caused by concentrated personnel or uneven stacking of supplies. However, these systems have obvious "adjustment blind spots": when the hull sways slightly due to the impact of wind and waves, or when personnel move within a small area on board, causing a local center-of-gravity shift, the adjustment precision of the coarse adjustment components is simply not up to par. Each step the movable weights take causes a significant change in the center of gravity, which not only fails to accurately correct small shifts but may also cause the hull to tilt to the other side due to "over-adjustment," creating a vicious cycle of "adjustment-shift-readjustment." Therefore, these problems need to be addressed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an adjustable center of gravity lifeboat.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable center of gravity lifeboat, comprising a hull, a protective railing on the top of the hull, an installation plate welded to the hull, a motor box for driving the hull fixed to the top of the installation plate, a rudder fixed to one end of the top of the installation plate, a center of gravity adjustment cavity between the hull and the installation plate, two weight blocks symmetrically arranged in the center of gravity adjustment cavity, an adjustment component in the center of gravity adjustment cavity, and a fine-tuning component on the adjustment component.

[0005] Preferably, the adjusting component includes a motor horizontally installed in the center of gravity adjusting cavity, a front fixed plate fixed to one side of the center of gravity adjusting cavity, and a lead screw horizontally rotatable on the side wall of the front fixed plate. One end of the lead screw is coaxially fixed to the output end of the motor. A moving block is sleeved on the lead screw, and a moving weight is fixed to the bottom of the moving block.

[0006] Preferably, the movable block is provided with symmetrical support columns on both sides, and the support columns are provided with sliding holes. A return spring is installed at the bottom of the sliding hole, and a connecting column is slidably provided in the sliding hole.

[0007] Preferably, the two weight blocks have mounting grooves on opposite sides, and two pairs of arc-shaped grooves are provided on both sides of the mounting grooves. One end of the connecting column is welded to the inner wall of the mounting groove, and the other end of the connecting column is fixed to the reset spring. One end of the two weight blocks is provided with a sliding block, and the two sliding blocks abut against the two side walls of the center of gravity adjustment cavity respectively.

[0008] Preferably, the fine-tuning component includes two pairs of track plates that slide in two pairs of arc-shaped grooves respectively and a toothed plate fixed to one side of the track plate. A counterweight is sleeved on the track plate, and a second motor is installed on one side of the counterweight. The output end of the second motor is coaxially fixed with a transmission gear for driving the counterweight, and the gear meshes with the toothed plate.

[0009] Preferably, a support shaft is fixed to one side of the top of the counterweight, and a sliding wheel is rotatably mounted on the support shaft, the sliding wheel slidingly abutting against the top of the track plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the cooperation between the first motor and the lead screw can drive the moving block to move along the axial direction of the lead screw, thereby driving the moving weight block to change its lateral position and realizing the coarse adjustment of the lifeboat's center of gravity; the cooperation between the return spring and the connecting column can ensure that the flexible connection between the moving block and the weight block is always stable, ensuring their coordinated movement; the setting of the track plate can provide a meshing basis for the transmission gear, realizing the precise movement of the counterweight block along the track plate, thereby realizing the fine adjustment of the center of gravity, solving the problem that traditional lifeboats rely only on adjustment components for coarse adjustment, which cannot address local small-range center of gravity shifts, resulting in poor navigation stability. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall first-view structure proposed in this utility model; Figure 2 This is a schematic diagram of the internal second-view structure proposed in this utility model; Figure 3 This is a schematic diagram of the structure of some parts proposed in this utility model; Figure 4 This is a schematic diagram of the fine-tuning component structure proposed in this utility model.

[0012] The numbers in the diagram are: 1. Hull; 2. Center of gravity adjustment cavity; 3. Motor box; 4. Guardrail; 5. Front fixing plate; 6. Weight block; 7. Track plate; 8. Lead screw; 9. Moving weight block; 10. Support column; 11. Sliding block; 12. Counterweight block; 13. Pulley. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Example: See Figures 1 to 4 This utility model discloses an adjustable center of gravity lifeboat, comprising a hull 1, with a protective railing 4 on the top of the hull 1 to form a personnel protection barrier and prevent personnel from falling into the water due to turbulence during navigation; a mounting plate is welded to the hull 1, and a motor housing 3 for driving the hull 1 is fixed to the top of the mounting plate, which is protected against seawater splashes and short-term immersion, adapting to the lifeboat's use environment on water; a rudder is fixed to one end of the top of the mounting plate, and a center of gravity adjustment cavity 2 is provided between the hull 1 and the mounting plate, which ensures smooth and unobstructed movement of components such as the sliding block 11 and the moving block; two weight blocks 6 are symmetrically arranged in the center of gravity adjustment cavity 2, which provide basic counterweight for the lifeboat using their own weight, and cooperate with the adjustment components to achieve coarse and fine adjustment of the center of gravity; an adjustment component is provided in the center of gravity adjustment cavity 2, and the adjustment component is equipped with a fine adjustment component.

[0015] In this utility model, the adjusting component includes a motor horizontally installed in the center of gravity adjusting cavity 2, a front fixing plate 5 fixed to one side of the center of gravity adjusting cavity 2, and a lead screw 8 horizontally rotatably mounted on the side wall of the front fixing plate 5. One end of the lead screw 8 is coaxially fixed to the output end of the motor. A moving block is sleeved on the lead screw 8, and a moving weight 9 is fixed to the bottom of the moving block. The adjusting component facilitates the use of threaded transmission to drive the moving block to move axially along the lead screw 8, thereby achieving coarse adjustment of the lifeboat's center of gravity. Support columns 10 are symmetrically arranged on both sides of the moving block. Sliding holes are opened on the support columns 10, and a return spring is installed at the bottom of the sliding hole. A connecting column is slidably arranged in the sliding hole. The support columns 10 facilitate the coordinated movement of the moving block and the weight block 6. The two weight blocks 6 have mounting grooves on opposite sides. Two pairs of arc-shaped grooves are opened on both sides of the mounting groove. One end of the connecting column is welded to the inner wall of the mounting groove, and the other end of the connecting column is fixed to the return spring. A sliding block 11 is provided at one end of each of the two weight blocks 6. Two sliding blocks 11 abut against the two side walls of the center of gravity adjustment cavity 2, respectively. The sliding blocks 11 facilitate the movement of the weight block 6 and reduce the direct friction between the weight block 6 and the cavity wall. The fine-tuning component includes two pairs of track plates 7 that slide in two pairs of arc-shaped grooves and a toothed plate fixed to one side of the track plate 7. A counterweight 12 is sleeved on the track plate 7. A second motor is installed on one side of the counterweight 12. The output end of the second motor is coaxially fixed with a transmission gear for driving the counterweight 12. The gear meshes with the toothed plate. The fine-tuning component facilitates the meshing of the transmission gear and the toothed plate, driving the counterweight 12 to move along the track plate 7, thereby achieving fine-tuning of the lifeboat's center of gravity. A support shaft is fixed to one side of the top of the counterweight 12. A sliding wheel 13 is rotatably mounted on the support shaft. The sliding wheel 13 slides against the top of the track plate 7. The sliding wheel 13 facilitates the reduction of resistance when the counterweight 12 moves and limits the vertical displacement of the counterweight 12, ensuring its stable movement along the track plate 7.

[0016] Working Principle: When using this utility model, firstly, each electrical component in this application is connected to the power source. Then, the protective railing 4 on the top of the hull 1 forms a circumferential safety barrier to prevent personnel from falling into the water during turbulence or waves, while also providing handrail support for personnel movement. The mounting plate is welded to the top of the hull 1, supporting the motor housing 3 and the rudder. The drive motor inside the motor housing 3 provides power for the hull 1's navigation, while the rudder controls the navigation direction. Together, they achieve directional navigation of the lifeboat. On the other hand, the center of gravity adjustment cavity 2 between the mounting plate and the hull 1 provides a closed installation space for the center of gravity adjustment components, the weight block 6, and the fine-tuning components, preventing seawater from seeping in and affecting the hull. The system operates while ensuring the center of gravity adjustment component is centered, providing a balance reference for subsequent adjustments. Next, in the coarse adjustment stage: the motor inside the center of gravity adjustment chamber 2 starts, and its output drives the horizontally mounted lead screw 8 to rotate. One end of the lead screw 8 is limited by a bearing on the side wall of the front fixing plate 5. The threaded drive causes the moving block sleeved on the lead screw 8 to move axially along the lead screw 8. The moving weight 9 at the bottom of the moving block moves laterally synchronously with the moving block, changing the lateral center of gravity of the hull 1 through its own weight. Simultaneously, the support columns 10 on both sides of the moving block are connected to the weight block 6 through connecting columns in the sliding holes. One end of the connecting column is welded to the inner wall of the mounting groove of the weight block 6, and the other end abuts against the sliding hole. When the moving block moves, the connecting column slides along the sliding hole on the bottom return spring and compresses or stretches the return spring, causing the two symmetrically arranged weight blocks 6 to move synchronously. The sliding block 11 at one end of the weight block 6 slides along the two side walls of the center of gravity adjustment cavity 2 to guide the movement, further enhancing the center of gravity adjustment range and realizing the coordinated coarse adjustment of "moving weight block 9 + weight block 6", quickly correcting the tilt of the hull 1. When the hull 1 only has a small sway, it needs to be precisely corrected by the fine-tuning component: the track plate 7 is slidably installed in the arc-shaped groove on both sides of the mounting groove of the weight block 6, and the toothed plate on the side wall of the track plate 7 provides the basis for the transmission; the counterweight block 12 is sleeved on the track plate 7, and the sliding wheel 13 on the top side is supported by The shaft rotates and abuts against the top of the track plate 7. The sliding wheel 13 converts the sliding friction between the counterweight 12 and the track plate 7 into rolling friction, greatly reducing the moving resistance. The second motor on one side of the counterweight 12 is started, and the output end drives the transmission gear to rotate. The gear meshes with the toothed plate of the track plate 7, driving the counterweight 12 to move along the arc trajectory of the track plate 7. By controlling the forward and reverse rotation and speed of the second motor, the position of the counterweight 12 can be precisely adjusted to achieve fine correction of the center of gravity. The entire center of gravity adjustment process forms a coordinated closed loop of "coarse adjustment + fine adjustment" to ensure that the lifeboat can maintain a stable sailing state in different wind and wave environments. At this point, the use of the lifeboat with adjustable center of gravity ends.

[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lifeboat with adjustable center of gravity, comprising a hull (1), characterized in that: The top of the hull (1) is provided with a protective railing (4). A mounting plate is welded on the hull (1). A motor box (3) for driving the hull (1) is fixed to the top of the mounting plate. A rudder is fixed to one end of the top of the mounting plate. A center of gravity adjustment cavity (2) is opened between the hull (1) and the mounting plate. Two weight blocks (6) are symmetrically arranged in the center of gravity adjustment cavity (2). An adjustment component is provided in the center of gravity adjustment cavity (2). A fine adjustment component is provided on the adjustment component.

2. A liferaft with adjustable center of gravity according to claim 1, characterized in that: The adjustment component includes a motor installed horizontally in the center of gravity adjustment cavity (2) and a front fixed plate (5) fixed to one side inside the center of gravity adjustment cavity (2), and a lead screw (8) that is horizontally rotatable on the side wall of the front fixed plate (5). One end of the lead screw (8) is coaxially fixed to the output end of the motor. A moving block is sleeved on the lead screw (8), and a moving weight (9) is fixed to the bottom of the moving block.

3. A gravity-adjustable lifeboat according to claim 2, characterized in that: The movable block is provided with symmetrical support columns (10) on both sides. The support columns (10) are provided with sliding holes. A reset spring is installed at the bottom of the sliding hole. A connecting column is slidably provided in the sliding hole.

4. A gravity-adjustable lifeboat according to claim 3, characterized in that: The two weight blocks (6) have mounting grooves on opposite sides. Each mounting groove has two pairs of arc-shaped grooves on both sides. One end of the connecting column is welded to the inner wall of the mounting groove, and the other end of the connecting column is fixed to the reset spring. One end of each weight block (6) has a sliding block (11), and the two sliding blocks (11) abut against the two side walls of the center of gravity adjustment cavity (2).

5. A center of gravity adjustable lifeboat according to claim 1, characterized in that: The fine-tuning component includes two pairs of track plates (7) that slide in two pairs of arc grooves respectively and a toothed plate fixed to one side of the track plate (7). A counterweight (12) is sleeved on the track plate (7). A second motor is installed on one side of the counterweight (12). The output end of the second motor is coaxially fixed with a transmission gear for driving the counterweight (12). The gear meshes with the toothed plate.

6. A center of gravity adjustable lifeboat according to claim 5, characterized in that: The counterweight (12) is fixed to a support shaft on one side of its top, and a sliding wheel (13) is rotatably mounted on the support shaft. The sliding wheel (13) slides against the top of the track plate (7).

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