Anti-roll mechanism, anti-roll seat for ship and anti-roll bed for ship

Abstract

The present invention provides a roll stabilization mechanism, a ship roll stabilization seat and a ship roll stabilization bed. The roll stabilization mechanism comprises a base plate, a support, a pitch frame, a roll frame, a first screw motor, a first screw nut, a second screw motor and a second screw nut, wherein the connection position of the pitch frame, the roll frame and the first screw motor constitutes a first triangle, two sides of the first triangle are fixed, and the other side changes with the position of the first screw nut, and the first screw motor drives the first screw nut to move according to the posture information of the base plate, thereby changing the posture of the pitch frame; wherein the connection position of the roll frame, the support and the second screw motor constitutes a second triangle, two sides of the second triangle are fixed, and the other side changes with the position of the second screw nut, and the second screw motor drives the second screw nut to move according to the posture information of the base plate, thereby changing the posture of the roll frame.

Description

Technical Field

[0001] The invention mainly relates to the technical field of anti-rolling devices, and in particular to an anti-rolling mechanism, a ship anti-rolling seat and a ship anti-rolling bed. Background Art

[0002] When a ship is sailing on the sea, the instability of the seawater will cause the ship to be bumpy during the sailing process. The ship's bumps mainly include roll and pitch, where roll is the left and right shaking of the hull, and pitch is the front and back shaking of the hull. When encountering strong winds and waves, the hull will roll and pitch at the same time, and will also be accompanied by ups and downs. Therefore, when crew members and passengers are on cruise ships and other marine transportation vehicles, especially ocean-going ships, the quality of rest is difficult to guarantee.

[0003] In order to solve this problem, a common practice is to install a roll reduction mechanism under the seat, which adjusts the seat's posture from pitch and roll, so that the seat surface is always level with the horizontal plane. However, the installation direction of the existing roll reduction mechanism is fixed, and it is impossible to achieve a roll reduction of no more than 30° at any direction on the 360° horizontal plane. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a roll reduction mechanism, a ship roll reduction seat and a ship roll reduction bed, so as to solve the problem that the existing roll reduction mechanism cannot achieve a roll reduction of no more than 30° on the hull at any position on a 360° horizontal plane.

[0005] In order to solve the above technical problems, the present invention provides a roll reduction mechanism, including a base plate, a support, a pitch frame, a roll frame, a first screw motor, a first screw nut, a second screw motor, and a second screw nut. The support is installed on the base plate, the roll frame is connected to the support, the pitch frame is connected to the roll frame, one end of the first screw motor is hinged to the pitch frame, and the other end is rotatably connected to the first screw nut, the first screw nut is connected to the roll frame, one end of the second screw motor is hinged to the roll frame, and the other end is rotatably connected to the second screw nut, and the second screw nut is connected to the support; wherein the position where the pitch frame is connected to the roll frame is recorded as the first position, the position where the first screw motor is hinged to the pitch frame is recorded as the second position, and the position of the first screw nut is recorded as the third position. , the first position, the second position and the third position constitute a first triangle, two sides of the first triangle are fixed, and the other side changes with the position of the first lead screw nut, and the first lead screw motor drives the first lead screw nut to move according to the posture information of the base plate, thereby changing the posture of the pitch frame; wherein, the position where the roll frame is connected to the support is recorded as the fourth position, the position where the second lead screw motor is hinged to the roll frame is recorded as the fifth position, and the position of the second lead screw nut is recorded as the sixth position, and the fourth position, the fifth position and the sixth position constitute a second triangle, two sides of the second triangle are fixed, and the other side changes with the position of the second lead screw nut, and the second lead screw motor drives the second lead screw nut to move according to the posture information of the base plate, thereby changing the posture of the roll frame.

[0006] Optionally, in the first triangle, the distance from the first position to the third position is fixed, the distance from the first position to the second position is fixed, the distance from the second position to the third position is recorded as the first variable side length, and the length of the first variable side length is changed by changing the position of the first screw nut, thereby changing the posture of the pitch frame.

[0007] Optionally, in the first triangle, a vertical distance from the first position to the first variable side length is a pitch lever arm, and a length of the pitch lever arm is greater than or equal to 110 mm.

[0008] Optionally, any angle of the first triangle is not less than 30°, and / or any angle of the second triangle is not less than 30°.

[0009] Optionally, in the second triangle, the distance from the fourth position to the sixth position is fixed, the distance from the fourth position to the fifth position is fixed, and the distance from the fifth position to the sixth position is recorded as the second variable side length. The length of the second variable side length is changed by changing the position of the second screw nut, thereby changing the posture of the roll frame.

[0010] Optionally, in the second triangle, a vertical distance from the fourth position to the second variable side length is a rolling arm, and a length of the rolling arm is greater than or equal to 96 mm.

[0011] Optionally, the first position is located at a center position of the scroll frame in a first direction, the fourth position is located at a center position of the scroll frame in a second direction, and the first direction is perpendicular to the second direction.

[0012] Optionally, the roll frame includes a first through hole in the first direction, the roll frame includes a second through hole in the second direction, the roll frame includes a first nut mounting seat and a second motor mounting seat on the side walls on opposite sides of the second through hole, the pitch frame includes a first motor mounting seat and a third through hole, the support includes a second nut mounting seat and a fourth through hole, and the first direction is perpendicular to the second direction; wherein, the roll frame and the support are pin-connected through the second through hole and the third through hole, the pitch frame and the roll frame are pin-connected through the first through hole and the fourth through hole, the first screw motor is hinged to the pitch frame through the first motor mounting seat, the first screw nut is connected to the roll frame through the first nut mounting seat, the second screw motor is hinged to the roll frame through the second motor mounting seat, and the second screw nut is connected to the support through the second nut mounting seat.

[0013] Optionally, the top end of the support is triangular, and the fourth through hole is located at the vertex of the triangle.

[0014] Optionally, the upper surface of the rolling frame includes a plurality of through holes.

[0015] In order to solve the above technical problems, the present invention provides a marine anti-roll seat, comprising: a seat surface and the anti-roll mechanism as described above, wherein the seat surface is connected to a pitch frame in the anti-roll mechanism.

[0016] In order to solve the above technical problems, the present invention provides a marine anti-roll bed, comprising: a bed plate and the anti-roll mechanism as described above, wherein the bed plate is connected to a pitch frame in the anti-roll mechanism.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The anti-roll mechanism of the present invention constructs a first triangle through the positional relationship between the first screw motor and the pitch frame, two sides of the first triangle are fixed, and the other side changes with the position of the first screw nut, thereby changing the posture of the pitch frame; the second triangle is constructed through the positional relationship between the second screw motor and the roll frame, two sides of the second triangle are fixed, and the other side changes with the position of the second screw nut, thereby changing the posture of the roll frame. This arrangement allows the anti-roll mechanism to be installed and used in any direction on the ship, and can correct the hull shaking of no more than 30° at any orientation on the 360° horizontal plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the present application. They are incorporated into and constitute a part of the present application. The accompanying drawings illustrate embodiments of the present application and together with the description serve to explain the principles of the present application.

[0020] Figure 1 2 is a schematic structural diagram of a roll reduction mechanism according to an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 Exploded view of the anti-roll mechanism.

[0022] Figure 3 yes Figure 1 A schematic diagram of an embodiment of a support for a roll stabilization mechanism.

[0023] Figure 4 is a schematic diagram of a balanced state of a pitch frame according to an embodiment of the present invention.

[0024] Figure 5 2 is a schematic diagram of a tilt frame in an upward-looking state according to an embodiment of the present invention.

[0025] Figure 6 FIG. 4 is a schematic diagram of a balanced state of a roll frame according to an embodiment of the present invention.

[0026] Figure 7 FIG. 4 is a schematic diagram of a left-leaning state of a roll frame according to an embodiment of the present invention.

[0027] Figure 8 Schematic diagram of a marine anti-roll seat according to an embodiment of the present invention.

[0028] Fig. 9 It is a schematic diagram of the composite state of a marine anti-roll seat.

[0029] Fig.10 Schematic diagram of a marine anti-rolling bed according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0031] Figure 1 2 is a schematic structural diagram of a roll reduction mechanism according to an embodiment of the present invention. Figure 2 yes Figure 1 Exploded view of the anti-roll mechanism. Figure 3 yes Figure 1 A schematic diagram of an embodiment of a support for a roll stabilization mechanism.

[0032] like Figures 1 to 3 As shown, the anti-roll mechanism 100 includes a base plate 1 , a support 2 , a pitch frame 3 , a roll frame 4 , a first screw motor 51 , a first screw nut 52 , a second screw motor 61 , and a second screw nut 62 .

[0033] The support 2 is mounted on the bottom plate 1. Optionally, the roll frame 4 includes a first through hole 41 in the first direction D1 (length direction) and a second through hole 42 in the second direction D2 (width direction), and the first direction D1 and the second direction D2 are perpendicular to each other. The side walls of the roll frame 4 on opposite sides of the second through hole 42 include a first nut mounting seat 43 and a second motor mounting seat 44, respectively.

[0034] Optionally, the pitch frame 3 includes a first motor mounting seat 31 and a third through hole 32 . The support 2 includes a second nut mounting seat 21 and a fourth through hole 22 .

[0035] The roll frame 4 is pin-connected to the support 2 through the second through hole 42 and the third through hole 22. In this embodiment, the roll pin 45 passes through the second through hole 42 and the third through hole 22 in sequence to pin-connect the roll frame 4 to the support 2.

[0036] The pitch frame 3 and the roll frame 4 are pin-connected through the first through hole 41 and the fourth through hole 32. In this embodiment, the pitch pin 46 passes through the first through hole 41 and the fourth through hole 32 in sequence to pin-connect the pitch frame 3 and the roll frame 4. Optionally, the roll frame 4 further includes a bearing seat 47 and a bearing cover 48 used in conjunction with the pitch pin 46.

[0037] One end of the first screw motor 51 is hinged to the pitch frame 3, and the other end is rotatably connected to the first screw nut 52. Optionally, the first screw motor 51 is hinged to the pitch frame 3 through the first motor mounting seat 31. The first screw nut 52 is connected to the roll frame 4 through the first nut mounting seat 43.

[0038] One end of the second screw motor 61 is hinged to the rolling frame 4, and the other end is rotatably connected to the second screw nut 62, and the second screw nut 62 is connected to the support 2. Optionally,

[0039] The second screw motor 61 is hinged to the roll frame 4 via the second motor mounting seat 44 , and the second screw nut 62 is connected to the support 2 via the second nut mounting seat 21 .

[0040] Figure 4 Schematic diagram of a balanced state of a pitch frame according to an embodiment of the present invention. Figure 5 2 is a schematic diagram of the upward-looking state of the pitch frame according to an embodiment of the present invention. Figures 4 and 5 As shown, the position where the pitch frame 3 is connected to the roll frame is recorded as the first position C1, the position where the first screw motor 51 is hinged to the pitch frame 3 is recorded as the second position A1, and the position of the first screw nut is recorded as the third position B1. The first position C1, the second position A1 and the third position B1 form a triangle. Among them, the length of the side length C1B1 of the triangle is fixed, and the length of the side length C1A1 is also fixed. The length of the side length A1B1 changes with the position B1 of the first screw nut.

[0041] like Figure 5 As shown, the first screw motor 51 drives the first screw nut to move according to the posture information of the base plate 1. Compared with the balanced state, the length of the side length A1B1 increases, and the first screw motor 51 pushes the pitch frame 3 to the upward state. Similarly, the first screw motor 51 drives the first screw nut to move according to the posture information of the base plate 1. Compared with the balanced state, the length of the side length A1B1 decreases, and the first screw motor 51 pulls the pitch frame 3 to the downward state.

[0042] The vertical distance from the first position C1 to the side length A1B1 is the pitch arm L1. Optionally, the length of the pitch arm L1 is greater than or equal to 110 mm, so as to obtain sufficient output torque and avoid increasing the power of the motor due to too small output arm. The length of the pitch arm L1 of the present invention is greater than or equal to 110 mm, which can reduce the energy consumption of the motor.

[0043] Optionally, any angle of the triangle formed by the first position C1, the second position A1 and the third position B1 is not less than 30°, so as to avoid the instability of the configuration caused by too small an angle. In other words, the present invention ensures the stability of the structure by setting any angle of the triangle to be not less than 30°.

[0044] Alternatively, if Figure 4 As shown, the first position C1 is located at the center of the roll frame in the width direction, so that the forces on both sides of the first position C1 of the roll frame are equal.

[0045] Figure 6 FIG. 4 is a schematic diagram of a balanced state of a roll frame according to an embodiment of the present invention. Figure 7 FIG. 1 is a schematic diagram of a left-leaning state of a roll frame according to an embodiment of the present invention. Figures 6 and 7 As shown, the position where the roll frame 4 is connected to the support 2 is recorded as the fourth position C2, the position where the second screw motor 61 is hinged to the roll frame 4 is recorded as the fifth position A2, and the position of the second screw nut is recorded as the sixth position B2. The fourth position C2, the fifth position A2 and the sixth position B2 form a triangle. Among them, the length of the side length C2B2 of the triangle is fixed, and the length of the side length C2A2 is also fixed. The length of the side length A2B2 changes with the position B2 of the first screw nut.

[0046] like Figure 7 As shown, the second screw motor 61 drives the second screw nut to move according to the posture information of the base plate 1, and the position B2 of the second screw nut changes. Compared with the balanced state, the length of the side length A2B2 increases, and the second screw motor 61 pushes the roll frame 4 to the left-leaning state. Similarly, the second screw motor 61 drives the second screw nut to move according to the posture information of the base plate 1. Compared with the balanced state, the length of the side length A2B2 decreases, and the second screw motor 61 pulls the roll frame 4 to the right-leaning state.

[0047] Among them, the vertical distance from the fourth position C2 to the side length A2B2 is the roll arm L2. Optionally, the length of the roll arm L2 is greater than or equal to 96 mm, so as to obtain sufficient output torque and avoid increasing the power of the motor due to too small output arm. The length of the roll arm L2 of the present invention is greater than or equal to 96 mm, which can reduce the energy consumption of the motor.

[0048] Optionally, any angle of the triangle formed by the fourth position C2, the fifth position A2 and the sixth position B2 is not less than 30°, so as to avoid the phenomenon of configuration instability caused by too small an angle. In other words, the present invention ensures the stability of the structure by setting any angle of the triangle to be not less than 30°.

[0049] Alternatively, if Figure 6 As shown, the fourth position C2 is located at the center of the length direction of the roll frame 4, so that the forces on both sides of the fourth position C2 of the roll frame 4 are equal.

[0050] like Figure 2 and 3As shown, the top of the support 2 is triangular, and the fourth through hole 22 is located at the vertex of the triangle, so that the contact area between the roll frame 4 and the support 2 is minimized, and the roll frame 4 has enough space to meet the large-scale anti-rolling of the sea seat. The anti-roll mechanism of the present invention allows the anti-roll mechanism to be installed and used in any direction on the ship, and the anti-roll mechanism can achieve the anti-rolling range of [-30°, +30°] in any orientation.

[0051] Optionally, if Figure 2 As shown, the upper surface of the roll frame 4 includes a plurality of through holes, which can improve the air permeability of the seat and reduce the weight of the anti-roll mechanism.

[0052] The anti-roll mechanism of the present invention constructs a first triangle through the positional relationship between the first screw motor and the pitch frame, two sides of the first triangle are fixed, and the other side changes with the position of the first screw nut, thereby changing the posture of the pitch frame; the second triangle is constructed through the positional relationship between the second screw motor and the roll frame, two sides of the second triangle are fixed, and the other side changes with the position of the second screw nut, thereby changing the posture of the roll frame, allowing the anti-roll mechanism to be installed and used in any direction on the ship, and can correct the hull shaking of no more than 30° at any orientation on the 360° horizontal plane.

[0053] The present application also provides a marine anti-roll seat. Figure 8 FIG. 1 is a schematic diagram of a ship anti-roll seat according to an embodiment of the present invention. Figure 8 As shown, the marine anti-rolling seat 200 comprises a seat surface 20 and an anti-rolling mechanism 100 . The seat surface 20 is connected to the pitch frame 3 in the anti-rolling mechanism 100 . Fig. 9 It is a schematic diagram of the composite state of the marine anti-roll seat. Fig. 9 As shown, the ship's anti-roll seat can perform rolling and pitching movements simultaneously under the action of the anti-roll mechanism, and can correct the hull's shaking of no more than 30° at any direction on the 360° horizontal plane.

[0054] The present application also provides a marine anti-roll bed. Fig.10 FIG. 1 is a schematic diagram of a ship anti-rolling bed according to an embodiment of the present invention. Fig.10 As shown, the ship anti-rolling bed 300 includes a bed plate 30 and the anti-rolling mechanism 100 of the present application, and the bed plate 30 is connected to the pitch frame in the anti-rolling mechanism 100. When the hull shakes, the ship anti-rolling bed actively performs roll and pitch anti-rolling, and can keep the bed plate in a basically horizontal state as much as possible, thereby reducing or eliminating the discomfort of seasickness caused by the swaying of the hull of the ship, and effectively achieving the purpose of preventing seasickness.

[0055] The basic concepts have been described above. Obviously, for those skilled in the art, the above invention disclosure is only used as an example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.

[0056] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0057] As shown in this application, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0059] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and cannot be understood as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0062] It should be understood that when a component is referred to as being "on another component," "connected to another component," "coupled to another component," or "contacting another component," it may be directly on, connected to, coupled to, or contacting the other component, or there may be intervening components. In contrast, when a component is referred to as being "directly on another component," "directly connected to," "directly coupled to," or "directly contacting" another component, there are no intervening components. Similarly, when a first component is referred to as being "electrically in contact with" or "electrically coupled to" a second component, there is an electrical path between the first component and the second component that allows current to flow. The electrical path may include capacitors, coupled inductors, and / or other components that allow current to flow, even without direct contact between conductive components.

[0063] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more embodiments of the invention, in the above description of the embodiments of the present application, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the subject of the present application requires more features than the features mentioned. In fact, the features of the embodiment are less than all the features of the single embodiment disclosed above.

[0064] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used for the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification are approximate values, which can be changed according to the required characteristics of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the method of general digit retention. Although the numerical domains and parameters used to confirm the breadth of the range in some embodiments of the present application are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

[0065] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions may be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the essential spirit of the present application, they will fall within the scope of the present application.

Claims

1. A roll reduction mechanism, characterized in that: include: A base plate, a support, a pitch frame, a roll frame, a first screw motor, a first screw nut, a second screw motor, and a second screw nut. The support is mounted on the base plate, the roll frame is connected to the support, the pitch frame is connected to the roll frame, one end of the first screw motor is hinged to the pitch frame, and the other end is rotatably connected to the first screw nut, the first screw nut is connected to the roll frame, one end of the second screw motor is hinged to the roll frame, and the other end is rotatably connected to the second screw nut, and the second screw nut is connected to the support; The position where the pitch frame is connected to the roll frame is recorded as the first position, the position where the first lead screw motor is hinged to the pitch frame is recorded as the second position, and the position of the first lead screw nut is recorded as the third position. The first position, the second position and the third position constitute a first triangle, two sides of the first triangle are fixed, and the other side changes with the position of the first lead screw of the first lead screw motor. The distance from the second position to the third position is recorded as the first variable side length. The first lead screw motor drives the first lead screw to move relative to the first lead screw nut according to the posture information of the base plate, and changes the length of the first variable side length by changing the position of the first lead screw, thereby changing the posture of the pitch frame. The position where the roll frame is connected to the support is recorded as the fourth position, the position where the second lead screw motor is hinged to the roll frame is recorded as the fifth position, and the position of the second lead screw nut is recorded as the sixth position. The fourth position, the fifth position and the sixth position constitute a second triangle, two sides of the second triangle are fixed, and the other side changes with the position of the second lead screw of the second lead screw motor. The second lead screw motor drives the second lead screw to move relative to the second lead screw nut according to the posture information of the bottom plate, thereby changing the posture of the roll frame. Among them, in the first triangle, the vertical distance from the first position to the first variable side length is the pitch lever arm, and the length of the pitch lever arm is greater than or equal to 110 mm.

2. The anti-roll mechanism according to claim 1, characterized in that: Any angle of the first triangle is not less than 30°, and / or any angle of the second triangle is not less than 30°.

3. The anti-roll mechanism according to claim 1, characterized in that: In the second triangle, the distance from the fourth position to the sixth position is fixed, the distance from the fourth position to the fifth position is fixed, and the distance from the fifth position to the sixth position is recorded as the second variable side length. The length of the second variable side length is changed by changing the position of the second screw rod, thereby changing the posture of the roll frame.

4. The anti-roll mechanism according to claim 3, characterized in that: In the second triangle, a vertical distance from the fourth position to the second variable side length is a rolling arm, and a length of the rolling arm is greater than or equal to 96 mm.

5. The anti-roll mechanism according to claim 1, characterized in that: The first position is located at the center of the roll frame in the first direction, the fourth position is located at the center of the roll frame in the second direction, and the first direction is perpendicular to the second direction.

6. The anti-roll mechanism according to claim 1, characterized in that: The roll frame includes a first through hole in the first direction, the roll frame includes a second through hole in the second direction, the side walls of the roll frame located on opposite sides of the second through hole respectively include a first nut mounting seat and a second motor mounting seat, the pitch frame includes a first motor mounting seat and a third through hole, the support includes a second nut mounting seat and a fourth through hole, and the first direction is perpendicular to the second direction; Among them, the roll frame and the support are pin-connected through the second through hole and the fourth through hole, the pitch frame and the roll frame are pin-connected through the first through hole and the third through hole, the first screw motor is hinged to the pitch frame through the first motor mounting seat, the first screw nut is connected to the roll frame through the first nut mounting seat, the second screw motor is hinged to the roll frame through the second motor mounting seat, and the second screw nut is connected to the support through the second nut mounting seat.

7. The anti-roll mechanism according to claim 6, characterized in that: The top of the support is in the shape of a triangle, and the fourth through hole is located at the top angle of the triangle.

8. The anti-roll mechanism according to claim 1, characterized in that: The upper surface of the roll frame includes a plurality of through holes.

9. A marine anti-roll seat, characterized in that: include: A seat surface, a sway reduction mechanism as claimed in any one of claims 1 to 8, wherein the seat surface is connected to a pitch frame in the sway reduction mechanism.

10. A marine anti-roll bed, characterized in that: include: A bed board, a roll reduction mechanism as described in any one of claims 1 to 8, wherein the bed board is connected to a pitch frame in the roll reduction mechanism.

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