Angle-adjustable eggshell seat device capable of passively resisting shaking

Abstract

The invention discloses an eggshell seat device capable of passively resisting shaking and adjusting angles, and belongs to the field of industrial design and manufacturing of upper-layer facilities of ships. The invention solves the problems that the comfort of passengers is greatly reduced and even symptoms such as dizziness and nausea are caused because the seat is unstable due to the shaking of the ship body in the sailing process of the existing small and medium-sized cruise ship. The seat is connected with the rubber base through the angle adjusting assembly to achieve face angle adjustment of the seat, all-directional position adjustment is achieved by connecting a cross ball cage type rolling universal joint, sensing of shaking is achieved by arranging a force sensing mechanism, passive shaking resistance is achieved by arranging a hydraulic rod device between the corresponding hinged supports, and the safety of the seat is improved. And the seat is kept in a horizontal stable state. Passive anti-shaking and active adjustment of the facing angle of the seat can be achieved in the ship shaking environment, the riding experience of passengers is remarkably improved, discomfort caused by ship body shaking is effectively relieved, and therefore the economical efficiency and comfort of ship operation are enhanced.

Description

Technical Field

[0001] This invention belongs to the field of industrial design and manufacturing technology for ship superstructures, specifically relating to an eggshell seat device that can passively resist swaying and has an adjustable angle. Background Technology

[0002] Ships, especially small and medium-sized cruise ships, offer passengers unique sightseeing experiences such as getting close to the ocean. However, due to their relatively small size, they are prone to complex, multi-degree-of-freedom swaying under the influence of waves. This continuous and unpredictable hull swaying is directly transmitted to the seats inside the cabin, causing passengers to sway and resulting in extremely poor posture stability. Therefore, it is necessary to develop a passively anti-sway seat to achieve multi-degree-of-freedom resistance to swaying, significantly improving passenger comfort. This provides a new direction and scientific guidance for improving the economy and comfort of ship operations, as well as enhancing passenger comfort and satisfaction.

[0003] Currently, traditional seats used on ships are mostly fixed or have only simple angle adjustment functions, which cannot effectively cope with the swaying of the ship. Passengers need to constantly and actively adjust their core muscles to maintain balance during the journey, which can easily lead to muscle fatigue and mental stress. More seriously, this passive swaying is one of the main causes of motion sickness, greatly reducing passenger comfort and the overall riding experience. Therefore, there is an urgent need for a sway-resistant seating device that can passively counteract the complex, multi-degree-of-freedom swaying caused by waves.

[0004] Existing technologies include several solutions that use active control systems, such as servo motors and microelectronic control systems, to adjust the seat platform in real time to maintain its level. However, these active stabilization systems are complex in structure, expensive to manufacture, energy-intensive, and difficult to maintain. Therefore, some existing technologies are difficult to widely implement on small and medium-sized cruise ships with limited space and capacity.

[0005] Therefore, there is an urgent need in this field for a passive solution that is structurally sound, cost-effective, and requires minimal electronic components, capable of effectively isolating or compensating for hull rolling, providing passengers with a relatively stable and comfortable riding environment. Ideally, the device should be able to resist rolling while simultaneously meeting passengers' needs for personalized adjustments to seat angle and orientation, thereby fundamentally improving the riding quality and market appeal of ships. Summary of the Invention

[0006] The present invention aims to solve the above-mentioned technical problems and provides an eggshell seat device that can passively resist shaking and has an adjustable angle.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0008] An eggshell seat device with passive anti-sway and adjustable angle includes an eggshell seat, a shock-absorbing shell, a rotating mechanism, and a passive anti-sway component.

[0009] The passive anti-sway component is installed inside the shock-absorbing shell. One end face of the rotating mechanism is connected to the upper end face of the shock-absorbing shell, and the bottom end face of the eggshell seat is connected to the other end face of the rotating mechanism.

[0010] When the eggshell seat is shaken, the passive anti-shake component performs passive anti-shake action to maintain the stability of the seat. The eggshell seat changes its facing direction through the rotation of the rotating mechanism.

[0011] Furthermore, the passive anti-sway assembly includes multiple hydraulic piston rods and a cross-shaped ball cage type rolling universal joint; one end of each hydraulic piston rod is connected to the inner upper surface of the shock-absorbing housing, and the other end of each hydraulic piston rod is connected to the inner lower surface of the shock-absorbing housing; the cross-shaped ball cage type universal joint is connected to the inner upper surface of the shock-absorbing housing.

[0012] Furthermore, the cross-shaped ball cage type rolling universal joint is also connected to multiple fixed straight rods. The other end of each fixed straight rod is rotatably connected to a straight rod. The other end of each straight rod is equipped with a spring tension structure. Each spring tension structure is connected to a tension sensor. Each tension sensor is connected to the upper end of the inside of the shock-absorbing housing to detect the tension value generated by the shaking in real time and transmit the signal to the hydraulic piston rod, thereby realizing adaptive anti-shaking control.

[0013] Furthermore, the plurality of fixed straight rods are circumferentially distributed with the center of the top surface inside the shock-absorbing shell as the center.

[0014] Furthermore, the upper ends of the plurality of hydraulic piston rods are circumferentially distributed around the center of the upper surface inside the shock-absorbing housing.

[0015] Furthermore, the other ends of the plurality of hydraulic piston rods are circumferentially distributed around the center of the lower inner surface of the shock-absorbing housing, serving to counteract multi-degree-of-freedom swaying.

[0016] Furthermore, the rotating mechanism is controlled by a motor. When the motor receives a signal, it drives the rotating mechanism to rotate, thereby changing the orientation of the eggshell seat.

[0017] Furthermore, the shock-absorbing shell has elastic properties; when a small sway occurs, the shock-absorbing shell generates anti-torsional torque through its own deformation, thereby maintaining the level and stability of the eggshell seat.

[0018] Furthermore, when significant shaking occurs, the anti-torsional torque provided by the rubber shock-absorbing shell is insufficient to support the horizontal and stable operation of the eggshell seat, causing the eggshell seat to rotate in the same direction as the shaking. The rotating eggshell seat causes the angle of the cross-shaped ball-cage rolling universal joint to shift, which in turn causes multiple fixed straight rods to displace obliquely downwards. Each fixed straight rod causes a downward displacement of the straight rod rotatably connected to it, and each straight rod causes deformation of the spring tension structure connected to it. This deformation transmits the tension of the spring tension structure to the tension sensor, which transmits the numerical signal to the control system. The control system, based on the numerical signal provided by the tension sensor, converts the tension value into the displacement value required by the multiple hydraulic piston rods, and then controls the multiple hydraulic piston rods to generate anti-torsional torque to counteract significant shaking, thereby maintaining the horizontal stability of the eggshell seat under significant shaking.

[0019] Compared to existing technologies, this invention utilizes a passive balancing system comprised of a rubber shock-absorbing shell, a hydraulic piston rod, and a cross-shaped ball-cage rolling universal joint. This system efficiently counteracts and absorbs the multidimensional swaying energy transmitted from the hull, maintaining the seating platform relatively level and stable even in complex sea conditions. This effectively alleviates muscle fatigue, mental stress, and motion sickness (such as dizziness and nausea) caused by swaying, significantly improving passenger comfort. This contributes to enhancing the cruise ship's reputation and customer return rate, bringing economic benefits and brand value to operators. Furthermore, through a rotating disc mechanism, the seats can actively and flexibly adjust their orientation during ship swaying, allowing passengers to adjust to their ideal angle according to their preferences or viewing needs, enhancing passenger autonomy and enjoyment.

[0020] This invention is based on the principles of mechanical and hydraulic passive control. It features a compact, robust, and durable structure, offering a faster response compared to traditional purely mechanical anti-sway structures. Furthermore, it requires no external energy source or complex circuitry, significantly reducing manufacturing costs and avoiding high energy consumption, high failure rates, and maintenance challenges. This makes it particularly suitable for large-scale deployment on small to medium-sized cruise ships in confined spaces and harsh environments. The system also integrates a tension sensor, which detects the degree of swaying in real time and feeds feedback to the hydraulic piston rod. The anti-sway force is adaptively adjusted according to the sway intensity, achieving precise and stable closed-loop control and overcoming the shortcomings of existing passive devices, such as lack of feedback and inaccurate adjustment.

[0021] This invention integrates passive anti-sway components and a rotating disc mechanism within a rubber shock-absorbing shell, resulting in a highly integrated structure. Compared to separate shock absorption systems, this saves space, reduces loosening and wear, and extends service life. Its "eggshell" shape not only boasts a novel appearance but also provides excellent lateral support and a sense of enclosure from an ergonomic perspective, reducing passenger tension and insecurity in swaying environments and enhancing comfort on both physiological and psychological levels. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a side view of the passive anti-shake component of the present invention.

[0024] Figure 3 This is a bottom view of the passive anti-shake component of the present invention.

[0025] In the diagram: Eggshell seat 1, shock-absorbing outer shell 2, rotating mechanism 2-1, tension sensor 3, first spherical hinge support 4, second spherical hinge support 5, third spherical hinge support 6, hydraulic piston rod 7, cross-shaped ball cage type rolling universal joint 8, cross-shaped ball cage type rolling hinge support 8-1, fixed straight rod 8-2, pin 8-3, straight rod 8-4, spring tension structure 8-5. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1 to 3 The present invention will be further described below.

[0027] An eggshell seat device with passive anti-sway and adjustable angle includes an eggshell seat 1, a shock-absorbing outer shell 2, a rotating mechanism 2-3, and a passive anti-sway component.

[0028] The passive anti-sway component is installed inside the shock-absorbing shell 2. One end face of the rotating mechanism 2-3 is connected to the upper end face of the shock-absorbing shell 2, and the bottom end face of the eggshell seat 1 is connected to the other end face of the rotating mechanism 2-3.

[0029] When the eggshell seat 1 is shaken, the passive anti-shake component performs passive anti-shake to keep the seat stable. The eggshell seat 1 changes its facing direction through the rotation of the rotating mechanism 2-3.

[0030] Furthermore, the passive anti-sway assembly includes multiple hydraulic piston rods 7 and a cross-shaped ball cage type rolling universal joint 8; one end of each hydraulic piston rod 7 is connected to the inner upper surface of the shock-absorbing housing 2, and the other end of each hydraulic piston rod 7 is connected to the inner lower surface of the shock-absorbing housing 2; the cross-shaped ball cage type universal joint 8 is connected to the inner upper surface of the shock-absorbing housing 2.

[0031] Furthermore, the cross-shaped ball cage type rolling universal joint 8 is also connected to multiple fixed straight rods 8-2. The other end of each fixed straight rod 8-2 is rotatably connected to a straight rod 8-4. The other end of each straight rod 8-4 is equipped with a spring tension structure 8-5. Each spring tension structure 8-5 is connected to a tension sensor 3. Each tension sensor 3 is connected to the upper end of the inside of the shock-absorbing housing 2, and is used to detect the tension value generated by the shaking in real time, and transmit the signal to the hydraulic piston rod 7, thereby realizing adaptive anti-shaking control.

[0032] Furthermore, the plurality of fixed straight rods 8-3 are circumferentially distributed with the center of the inner top surface of the shock-absorbing shell 2 as the center.

[0033] Furthermore, the upper ends of the plurality of hydraulic piston rods 7 are circumferentially distributed on the upper inner surface of the shock-absorbing housing 2 with the center of the upper inner surface of the shock-absorbing housing 2 as the center.

[0034] Furthermore, the other ends of the plurality of hydraulic piston rods 7 are circumferentially distributed around the center of the lower inner surface of the shock-absorbing housing 2, for counteracting multi-degree-of-freedom swaying.

[0035] Furthermore, the rotating mechanism 2-3 is controlled by a motor. When the motor receives a signal, it drives the rotating mechanism 2-3 to rotate, thereby changing the orientation of the eggshell seat 1.

[0036] Furthermore, the shock-absorbing shell 2 has elastic properties; when a small sway occurs, the shock-absorbing shell 2 generates anti-torsional torque through its own deformation, thereby maintaining the level and stability of the eggshell seat 1.

[0037] Furthermore, when a large sway occurs, the anti-torsional torque provided by the rubber shock-absorbing shell 2 is insufficient to support the horizontal and stable position of the eggshell seat 1, causing the eggshell seat 1 to rotate in the same direction as the sway. The rotating eggshell seat 1 causes the angle of the cross-shaped ball cage rolling universal joint 8 to shift, which in turn causes multiple fixed straight rods 8-2 to displace obliquely downward. Each fixed straight rod 8-2 causes a straight rod 8-4 rotatably connected to it to displace downward. Each straight rod 8-4 causes a spring tension structure 8-5 connected to it to deform, which in turn transmits the tension of the spring tension structure 8-5 to the tension sensor 3. The tension sensor 3 transmits the numerical signal to the control system. The control system converts the tension value into the displacement value required by the multiple hydraulic piston rods 7 based on the numerical signal provided by the tension sensor 3, and then controls the multiple hydraulic piston rods 7 to generate anti-torsional torque to counteract the large sway, thereby maintaining the horizontal stability of the eggshell seat 1 under large sway.

[0038] Example

[0039] Combination Figures 1 to 3 This description of embodiments provides a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that the descriptions of "front," "rear," "left," "right," "inner," "outer," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this invention are defined based on the orientation or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In the description of this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] An eggshell seat device with passive anti-sway and adjustable angle, characterized in that it includes an eggshell seat 1, a shock-absorbing outer shell 2, and a passive anti-sway component. The passive anti-sway component is installed inside the shock-absorbing outer shell 2. The eggshell seat 1 is mounted on top of the shock-absorbing outer shell 2 via a disc rotation mechanism 2-1, and its facing direction can be changed through the disc rotation mechanism 2-1. Simultaneously, the passive anti-sway component provides passive anti-sway, maintaining the seat's stable horizontal position.

[0043] The passive anti-sway assembly includes a cross-shaped ball cage type rolling universal joint 8 and four hydraulic piston rods 7 installed inside the shock-absorbing housing 2.

[0044] The shock-absorbing housing 2 has a cylindrical structure, the cross-shaped ball cage type rolling universal joint 8 has a cross-shaped cylindrical structure, and the four hydraulic piston rods 7 have a tubular rod structure. The main body of the cross-shaped ball cage type rolling universal joint 8 is installed on the top of the outer shock-absorbing housing 2. The cross rod structure is fitted onto the first spherical hinge support 4 and connected to the shock-absorbing housing 2. A first tension sensor 4 is provided between the top inner wall of the first spherical hinge support 4 and the top of the shock-absorbing housing 2.

[0045] The bottom of the shock-absorbing housing 2 has four limiting blind holes distributed circumferentially, and a third spherical hinge support 6 is installed on each limiting blind hole. The upper half of the main body 8-1 of the cross-shaped ball cage rolling universal joint 8 has four fixed straight rods 8-2 distributed circumferentially, and the fixed straight rods 8-2 are connected to straight rods 8-4 one by one through pins 8-3. The top of the corresponding straight rods 8-4 are connected to the spring tension structure 8-5 one by one. By inserting the corresponding third spherical hinge support 6 and the tension sensor 3, the lateral pressure during shaking is converted into the value on the tension sensor, realizing the real-time detection of the degree of shaking, and transmitting the corresponding tension value to the hydraulic piston rod 7.

[0046] The eggshell seat 1 is fixedly mounted on the rotating mechanism 2-1.

[0047] The eggshell seat 1 is fixed to the outside of the shock-absorbing shell 2 via a rotating mechanism 2-1. The rotating mechanism 2-1 is controlled by a motor, which is adjusted by the passenger via a remote control. The motor receives a signal and rotates left and right, thereby adjusting the orientation of the seat.

[0048] During the experiment, when the ship experiences multi-degree-of-freedom swaying, it causes corresponding multi-degree-of-freedom swaying in the seats of the ship's superstructure. When small swaying occurs, the shock-absorbing shell 2 plays a primary passive anti-swaying role. The small swaying generates a corresponding torque; due to its material properties and excellent elasticity, the shock-absorbing shell 2 generates a torsional torque opposite to the torque generated by the swaying, ultimately stabilizing the seat and keeping it level. When large swaying occurs, the torsional torque generated by the shock-absorbing shell 2 is insufficient to support the seat in a level and stable position. In this case, the passive anti-sway components will generate a larger torsional torque, thereby maintaining the seat's level and stability.

[0049] The passive anti-sway component is mainly composed of a cross-shaped ball-cage universal joint 8 and a hydraulic piston rod 7. The cross-shaped ball-cage universal joint 8 and the hydraulic piston rod 7 work together to counteract the torque generated by large-scale swaying. The upper and lower parts of the cross-shaped ball-cage universal joint 8 are fixed to the top and bottom of the shock-absorbing shell 2, respectively. When large-scale swaying occurs, the eggshell seat 1 will rotate in the same direction as the swaying, causing the upper part of the cross-shaped ball-cage universal joint 8 to shift at an angle. The fixed straight rod 8-2 will produce a downward displacement, which will cause the straight rod 8-4 connected to it by the pin 8-3 to produce a vertical downward displacement. This displacement will cause the spring tension structure 8-5 to produce a vertical downward displacement, and the corresponding spring will generate tension. Then, through the fixed first spherical hinge support 4, the tension will be transmitted to the tension sensor 3, generating a corresponding numerical signal. Through numerical calculation and signal transmission, the value of the tension will be converted into the displacement value required by the hydraulic piston rod 7. The corresponding hydraulic piston rod 7 will generate anti-torsional torque to counteract the swaying torque, thereby keeping the seat level and stable. This system architecture enables real-time adjustment of the swaying seat without the need for additional external power, greatly improving efficiency and user experience. It also eliminates the need for other high-precision control chips, further simplifying the structure of the passive anti-sway components.

[0050] Several first spherical hinge supports 4, second spherical hinge supports 5, and third spherical hinge supports 6 are evenly distributed circumferentially. The first spherical hinge supports 4 and second spherical hinge supports 5 are both fixed to the top of the shock-absorbing shell 2, with the first spherical hinge support 4 fixed to the inner circumference and the second spherical hinge support 5 fixed to the outer circumference. The third spherical hinge support 6 is fixed to the bottom of the shock-absorbing shell 2.

[0051] The hydraulic piston rod 7 is fixed to the second spherical hinge support 5 and the third spherical hinge support 6, providing support for the overall structure and counteracting torque. The spring force transmission structure 4 of the outer edge of the cross-shaped ball cage rolling universal joint 8 is fixed to the top of the shock-absorbing shell 2 through the first spherical hinge support 4.

[0052] The eggshell seat device of the present invention, which can passively resist swaying and has an adjustable angle, can be applied to the upper deck of small and medium-sized cruise ships and small and medium-sized speedboats. It can effectively isolate or compensate for the hull swaying, while meeting the needs of passengers to adjust the seat angle and orientation in a personalized way, providing passengers with a relatively stable and comfortable seating environment.

[0053] The eggshell seat device of the present invention, which is passively anti-shaking and adjustable in angle, can operate different passive compensation schemes according to different degrees of shaking, thereby reducing the consumption of mechanical components, increasing the service life of the mechanism, and significantly improving stability.

[0054] The eggshell seat device of this invention, which passively resists swaying and has an adjustable angle, converts the macroscopic sensation of swaying into a deflection angle signal, then into a displacement signal, and finally into a tension signal. The tension sensor 3 then converts this tension signal into the required displacement value of the hydraulic piston rod 7, ultimately maintaining the seat's stable horizontal position and achieving a passive dynamic cycle. It features real-time performance and high precision, effectively reducing the impact of external disturbances on the load-bearing object.

[0055] A rotating mechanism 2-1 is provided between the eggshell seat 1 and the shock-absorbing outer shell 2. This design allows for changes in the seat's orientation angle, improving passenger comfort and satisfaction.

[0056] A tension sensor 3 is installed between the first spherical hinge support 4 and the top of the shock-absorbing housing 2. This design allows for real-time acquisition of the tension value of the spring transmission structure, and the conversion of the tension value signal into the required displacement value, which is then transmitted to the hydraulic piston rod 7 to achieve real-time anti-swaying.

[0057] The cross-shaped ball-cage type rolling universal joint 8 is fixed to four fixed straight rods 8-2 and connected to the force sensor 3 via pins 8-3, straight rods 8-4, and spring tension structure 8-5. This design allows the real-time swaying signal of the eggshell seat 1 to be converted into a vertical downward displacement of the straight rod 8-4 through the angular offset of the upper part of the cross-shaped ball-cage type rolling universal joint 8. This displacement is then converted into the spring tension of the spring tension structure 8-5, and finally into the tension signal of the force sensor 3, thus converting macroscopic motion into a measurable numerical signal.

[0058] The passive anti-sway component is fixed to the eggshell seat 1 via the shock-absorbing shell 2. This design allows for different passive compensation schemes to be activated depending on the degree of swaying. For minor swaying, the shock-absorbing shell 2 provides anti-torsional torque, while for significant swaying, the passive anti-torsional component provides anti-torsional torque. This reduces wear and tear on mechanical components, increases the mechanism's service life, and significantly improves stability.

[0059] The hydraulic piston rod 7 is fixed to the shock-absorbing housing 2 via a first spherical hinge support 4, a second spherical hinge support 5, and a third spherical hinge support 6 in the radial direction. This design avoids the passive anti-sway component being able to only counteract four degrees of freedom of sway, and achieves counteracting of multi-degree-of-freedom sway.

[0060] There are four of each of the second spherical hinge support 5 and the first spherical hinge support 4, and they are evenly distributed around the top circumference of the shock-absorbing shell 2. This design allows for adjustment of the degree of sway every 90°. Furthermore, the multi-degree-of-freedom movement of the first spherical hinge support 4 and the second spherical hinge support 5 can counteract the multi-degree-of-freedom sway, thereby covering the sway of most of the ship's superstructure surface.

[0061] There are four third spherical hinge supports 6, which are evenly distributed around the bottom of the shock-absorbing shell 2. This design allows for adjustment of the sway degree every 90°. Furthermore, the multi-degree-of-freedom movement of the first spherical hinge support 4 and the second spherical hinge support 5 can counteract the multi-degree-of-freedom sway, thereby covering the sway of most ship superstructure surfaces.

[0062] The cross-shaped ball-cage type rolling universal joint 8 includes four fixed straight rods 8-2, which are evenly distributed circumferentially along the upper half of the cross-shaped ball-cage type rolling universal joint 8. This design enables the conversion of every 90° sway angle signal into a corresponding displacement signal, and each 90° group can cover the sway of most ship superstructure surfaces.

[0063] Four fixed straight rods 8-2 and 8-4 are connected one by one by pins 8-3. This design allows the sway angle signal of the seat to be converted into the vertical displacement signal of the straight rod 8-4.

[0064] Four straight rods 8-4 are connected one-to-one to the corresponding first spherical hinge support 4 via spring tension structures 8-5. This design enables the vertical displacement signal of the straight rods 8-4 to be converted into the spring tension signal of the spring tension structure 8-5, and further into the constraint force signal of the first spherical hinge support 4. This simultaneously ensures the stability of the structure and thus guarantees the smooth operation of the mechanism.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A passively anti-shaking and angle-adjustable eggshell seat device, characterized in that: Including eggshell seat (1), shock-absorbing shell (2), rotating mechanism (2-1) and passive anti-shake assembly; The passive anti-shake assembly is installed inside the shock-absorbing shell (2), one end surface of the rotating mechanism (2-1) is connected with the upper end surface of the shock-absorbing shell (2), and the other end surface of the rotating mechanism (2-1) is connected with the bottom end surface of the eggshell seat (1). When the eggshell seat (1) is shaken, the passive anti-shake assembly passively resists shaking to keep the seat stable, and the eggshell seat (1) changes the facing direction through the rotation of the rotating mechanism (2-1).

2. The anti-rocking and adjustable angle eggshell seat device according to claim 1, wherein: The passive anti-shake assembly includes a plurality of hydraulic piston rods (7) and a cross ball cage type rolling universal joint (8); one end of each hydraulic piston rod (7) is connected with the upper inner end surface of the shock-absorbing shell (2), and the other end of each hydraulic piston rod (7) is connected with the lower inner end surface of the shock-absorbing shell (2); the cross ball cage type rolling universal joint (8) is connected with the upper inner end surface of the shock-absorbing shell (2).

3. The anti-rocking and adjustable angle eggshell seat device according to claim 2, wherein: A plurality of fixed straight rods (8-2) are further connected to the cross ball cage type rolling universal joint (8), the other end of each fixed straight rod (8-2) is rotatably connected with a straight rod (8-4), the other end of each straight rod (8-4) is provided with a spring stretching structure (8-5), each spring stretching structure (8-5) is connected with a tension sensor (3), each tension sensor (3) is connected with the upper inner end surface of the shock-absorbing shell (2) for real-time detection of the tension value generated by shaking and signal transmission to the hydraulic piston rod (7) to realize self-adaptive anti-shake control.

4. The anti-rocking and adjustable angle eggshell seat device according to claim 3, wherein: The plurality of fixed straight rods (8-3) are distributed in a circle with the center of the top end surface of the shock-absorbing shell (2) as the center.

5. The anti-rocking and adjustable angle eggshell seat device according to claim 4, wherein: The upper ends of the plurality of hydraulic piston rods (7) are distributed in a circle with the center of the upper inner end surface of the shock-absorbing shell (2) as the center.

6. The anti-rocking and adjustable angle eggshell seat device according to claim 5, wherein: The other ends of the plurality of hydraulic piston rods (7) are distributed in a circle with the center of the lower inner end surface of the shock-absorbing shell (2) as the center.

7. The anti-rocking and adjustable angle eggshell seat device according to claim 1, wherein: The rotating mechanism (2-1) is controlled by a motor, when the motor receives a signal, the rotating mechanism (2-1) is driven to rotate to change the direction of the eggshell seat (1).

8. The anti-rocking and adjustable angle eggshell seat device according to claim 6, wherein: The shock-absorbing shell (2) has elastic properties; when small amplitude shaking occurs, the shock-absorbing shell (2) generates an anti-torque through deformation to keep the eggshell seat (1) horizontal and stable.

9. The anti-rocking and adjustable angle eggshell seat device according to claim 8, wherein: When a large swing occurs, the anti-torque provided by the rubber shock-absorbing shell (2) cannot support the horizontal and stability of the eggshell seat (1), and the eggshell seat (1) will rotate in the same direction as the swing direction. The rotating eggshell seat (1) drives the angle of the cross ball cage type rolling universal joint (8) to deviate, and then drives the multiple fixed straight rods (8-2) to produce a downward displacement. Each fixed straight rod (8-2) drives the straight rod (8-4) connected with it to produce a numerical downward displacement. Each straight rod (8-4) drives the spring tension structure (8-5) connected with it to deform, and then transmits the tension of the spring tension structure (8-5) to the tension sensor (3). The tension sensor (3) transmits the numerical signal to the control system. According to the numerical signal provided by the tension sensor (3), the control system converts the tension value into the displacement value required by the multiple hydraulic piston rods (7), and then controls the multiple hydraulic piston rods (7) to generate an anti-torque to resist the large swing, thereby maintaining the horizontal stability of the eggshell seat (1) under the large swing.

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