Novel ship gallery bridge without wave compensation

Abstract

The invention provides a novel ship gallery bridge without wave compensation, comprising: a rotating platform mounted on a ship; the bridge body comprises a main arm and a telescopic arm, the main arm is connected with the rotating platform through a spherical hinge, and the telescopic arm is telescopically connected with the main arm; the conical fixing base is installed on the telescopic arm and used for being connected with a connected platform, and the conical fixing base and the telescopic arm are connected through a universal joint so that the bridge body can only achieve yawing and pitching; the stabilizing oil cylinder is connected with the rotating platform through a universal joint, so that the stabilizing oil cylinder can only realize pitching and side inclination, and the stabilizing oil cylinder is connected with the main arm through a spherical hinge; and the pitching oil cylinder is connected with the rotating platform through a universal joint so that the pitching oil cylinder can achieve pitching and side inclining, and the pitching oil cylinder is connected with the main arm through a spherical hinge. The gallery bridge is simple in structure, does not need an additional compensation mechanism, is safe to use, and can reduce the cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship gangways, in particular to a new type of ship gangway without wave compensation. BACKGROUND

[0002] With the continuous development of China's marine economy, offshore wind power and various operation platforms are increasing, which brings great challenges to the operation and maintenance of these operation platforms. When a ship sails on the sea, it will be disturbed by wind, wave, surge and other loads to produce six-dimensional rolling (roll, pitch, yaw, sway, surge and heave) motion, which seriously threatens the safe transfer of personnel and goods.

[0003] At present, the offshore stable gangway mechanism realizes the rolling motion compensation of the ship through a 3-6 degree of freedom compensation control mechanism, so that the controlled object remains relatively stable in the inertial system. However, this also leads to a substantial increase in the control cost of the gangway (the cost of the motion compensation control system of the offshore gangway may account for 15%-30%), and the overall implementation effect is not very ideal. Therefore, designing a new concept of offshore gangway plays an important role in reducing the overall cost of the gangway and improving the efficiency and safety of offshore transfer for China's marine engineering construction. SUMMARY

[0004] The present application aims to at least solve one of the above technical problems. To this end, the purpose of the present application is to propose a new type of ship gangway without wave compensation, which has a simple structure and does not need a wave compensation mechanism control system. Through optimization of the connection mode and state switching, the motion interference is decoupled to ensure stable docking and safe transfer of personnel and goods, and the cost is also reduced.

[0005] To achieve the above-mentioned purpose, the present application proposes a new type of ship gangway without wave compensation, which comprises: a rotating platform, which is installed on a ship; a bridge body, which comprises a main arm and an extension arm, the main arm and the rotating platform are connected by a spherical hinge, and the extension arm and the main arm are connected by a telescopic connection; a conical fixing seat, which is installed on the extension arm for connection with the connected platform, and the conical fixing seat and the extension arm are connected by a universal joint, so that the bridge body can only realize yaw and pitch; a stabilizing oil cylinder, which is connected to the rotating platform by a universal joint, so that the stabilizing oil cylinder can only realize pitch and roll, and the stabilizing oil cylinder and the main arm are connected by a spherical hinge; A pitch oil cylinder is connected with the rotating platform through a universal joint, so that the pitch oil cylinder can realize pitching and rolling, and the pitch oil cylinder is connected with the main arm through a spherical hinge; Before the conical fixing seat is connected with the connected platform, the stabilizing oil cylinder is in a locked state to limit rotation of the bridge body along its axis, and the bridge body drives the conical fixing seat and the connected platform to dock through swinging and stretching and retracting; After the conical fixing seat is connected with the connected platform, the stabilizing oil cylinder, the stretching and retracting arm and the pitch oil cylinder are all in a free state.

[0006] According to the novel ship corridor bridge without wave compensation provided in the application, through optimization of structure design and state switching logic, stable docking and safe transfer of the ship and the connected platform are realized without an active wave compensation mechanism, so that the purposes of reducing cost, improving docking efficiency and safety are achieved.

[0007] In addition, the novel ship corridor bridge without wave compensation provided in the above-mentioned embodiments of the application can also have the following additional technical features: Optionally, the number of the stabilizing oil cylinders is one or two, and when the number of the stabilizing oil cylinders is two, the two stabilizing oil cylinders are distributed on the two sides of the central axis of the main arm in one-to-one correspondence.

[0008] Optionally, the conical fixing seat and the connected platform are connected through electromagnetic adsorption.

[0009] Optionally, the number of the pitch oil cylinders is two, and the two pitch oil cylinders are symmetrically arranged along the central axis of the main arm.

[0010] Optionally, a ladder is further arranged at the end of the stretching and retracting arm.

[0011] Optionally, a guide wheel is arranged between the stretching and retracting arm and the main arm.

[0012] Optionally, a driving member for driving stretching and retracting movement of the stretching and retracting arm is further arranged, the driving member comprises a gear and a rack matched with the gear, the rack is arranged on the stretching and retracting arm, and the gear is arranged on the main arm. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 FIG. 1 is a structural schematic view of the novel ship corridor bridge without wave compensation according to the embodiments of the application; Fig. 2 FIG. 2 is another structural schematic view of the novel ship corridor bridge without wave compensation according to the embodiments of the application; Legend: Rotating platform 1, main arm 2, telescopic arm 3, conical fixing seat 4, stabilizing oil cylinder 5, luffing oil cylinder 6, universal joint 7, spherical hinge 8, step 9, guide wheel 10, gear 11, rack 12, control cabinet 13. DETAILED DESCRIPTION

[0014] Embodiments of the present application will be described in detail below with reference to examples shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0015] In order to better understand the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present application and to convey the scope of the present application to those skilled in the art.

[0016] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings and specific embodiments.

[0017] The following description will be made with reference to Figs. 1-2 The implementation of the new type of ship gallery bridge without wave compensation according to the embodiments of the present application will be described in detail.

[0018] The new type of ship gallery bridge without wave compensation according to the embodiments of the present application comprises: The rotating platform 1 is installed on the ship; The bridge body comprises the main arm 2 and the telescopic arm 3, the main arm 2 is connected with the rotating platform 1 by the spherical hinge 8, and the telescopic arm 3 is connected with the main arm 2 by a telescopic connection; The conical fixing seat 4 is installed on the telescopic arm 3 for connection with the connected platform, and the conical fixing seat 4 is connected with the telescopic arm 3 by the universal joint 7, so that the bridge body can only realize yaw and pitch; The stabilizing oil cylinder 5 is connected with the rotating platform 1 by the universal joint 7, so that the stabilizing oil cylinder 5 can only realize pitch and roll, and the stabilizing oil cylinder 5 is connected with the main arm 2 by the spherical hinge 8; The luffing oil cylinder 6 is connected with the rotating platform 1 by the universal joint 7, so that the luffing oil cylinder 6 can realize pitch and roll, and the luffing oil cylinder 6 is connected with the main arm 2 by the spherical hinge 8; Before the taper fixing base 4 is connected with the connected platform, the stable oil cylinder 5 is in a locked state to limit the rotation of the bridge body along its own axis, and the bridge body drives the taper fixing base 4 to be connected with the connected platform through swinging and stretching. After the taper fixing base 4 is connected with the connected platform, the stable oil cylinder 5, the telescopic arm 3 and the pitching oil cylinder 6 are all in a free state.

[0019] That is, the bridge body includes a main arm 2 and a telescopic arm 3, the telescopic arm 3 is telescopically connected to the main arm 2, the bottom of the end of the telescopic arm 3 is provided with a conical fixing seat 4, a rotating platform 1 is connected to the main arm 2 for driving the bridge body to synchronously swing, the telescopic arm 3 can be telescopically extended to drive the conical fixing seat 4 to be extended to the connected platform and be connected and fixed with the connected platform; a universal joint 7 is adopted to connect between the conical fixing seat 4 and the telescopic arm 3, so that the bridge body can be pivoted at the universal joint 7 between the conical fixing seat 4 and the telescopic arm 3 to realize pitching and rolling, and the bridge body cannot be overturned along its own axis (a ball hinge 8 is adopted to connect between the telescopic arm 3 and the conical fixing seat 4 in the traditional way); the ball hinge 8 is adopted to connect between the main arm 2 and the rotating platform 1, so that the rotating platform 1 can be pivoted at the connection between the main arm 2 and the rotating platform 1 to match the multidimensional swing of the wave, and the bridge body can be pivoted at the connection between the main arm 2 and the rotating platform 1 to realize pitching and rolling (a hinge of one rotating direction is adopted to connect between the main arm 2 and the rotating platform 1 in the traditional way); a stabilizing oil cylinder 5 is installed on the rotating platform 1 and can synchronously rotate with the rotating platform 1, and its main function is to limit the rotation of the bridge body along its own axis and assist in adjusting the posture of the bridge body; a universal joint 7 is adopted to connect between the stabilizing oil cylinder 5 and the rotating platform 1, so that the stabilizing oil cylinder 5 can swing along the rolling and pitching directions of the bridge body, and the stabilizing oil cylinder 5 cannot rotate along its own axis; the ball hinge 8 is adopted to connect between the stabilizing oil cylinder 5 and the main arm 2, so that the stabilizing oil cylinder 5 can adapt to the multidimensional swing of the ship and the rolling and pitching of the bridge body; a pitching oil cylinder 6 is installed on the rotating platform 1 and can synchronously rotate with the rotating platform 1, and its main function is to adjust the pitching angle of the bridge body; a universal joint 7 is adopted to connect between the pitching oil cylinder 6 and the rotating platform 1, so that the pitching oil cylinder 6 can swing along the rolling and pitching directions of the bridge body; the ball hinge 8 is adopted to connect between the pitching oil cylinder 6 and the main arm 2, so that the pitching oil cylinder 6 can adapt to the multidimensional swing of the ship and the rolling and pitching of the bridge body; before the bridge body is connected with the connected platform, the stabilizing oil cylinder 5 is in a locked state to prevent the bridge body from being overturned along its own axis, the pitching oil cylinder 6 adjusts the pitching angle of the bridge body and is in a locked state, the rotating platform 1 drives the bridge body to swing, the telescopic arm 3 is extended to drive the conical fixing seat 4 to be extended to the connected platform and is in a locked state, and the conical fixing seat 4 is connected with the connected platform; after the conical fixing seat 4 is connected with the connected platform, the stabilizing oil cylinder 5, the telescopic arm 3 and the pitching oil cylinder 6 are in an unlocked state, at this time, the stabilizing oil cylinder 5 and the pitching oil cylinder 6 serve as a buffer, when the ship swings multidimensionally along with the wave, the bridge body can reduce the swing under the action of the pitching oil cylinder 6 and the stabilizing oil cylinder 5 when pitching and rolling, and when the distance between the ship and the connected platform changes, the action force between them can be eliminated by the telescoping of the telescopic arm 3 to reduce the swing.

[0020] The rotation of the rotating platform 1, the extension and retraction of the stabilizing oil cylinder 5, the extension and retraction of the luffing oil cylinder 6, and the connection between the conical fixed seat 4 and the connected platform can all adopt existing structures; the stabilizing oil cylinder 5 can be arranged below the main arm 2, the luffing oil cylinder 6 can be arranged above the main arm 2, the rotation of the rotating platform 1, the locking and unlocking of the stabilizing oil cylinder 5, the locking and unlocking of the luffing oil cylinder 6, and the locking and unlocking of the telescopic arm 3 can be operated through the control cabinet 13, and the control cabinet 13 can be arranged on the rotating platform 1.

[0021] Thus, by optimizing the structure design and state switching logic, the stable docking and safe transfer of the ship and the connected platform are realized without the active wave compensation mechanism, and the purposes of reducing the cost, improving the docking efficiency and safety are achieved.

[0022] Alternatively, the number of stabilizing oil cylinders 5 is one or two, and when the number of stabilizing oil cylinders 5 is two, the two stabilizing oil cylinders 5 are distributed on the two sides of the central axis of the main arm 2 in one-to-one correspondence. It can be understood that when one stabilizing oil cylinder 5 is adopted, it forms a constraint on the rotation of the main arm 2 along its own axis through single-point support, and the structure is more simple and is suitable for scenes with relatively low stability requirements. When two stabilizing oil cylinders 5 are adopted, balanced torque balance can be formed. This symmetrical structure can effectively disperse the eccentric load of the main arm 2 when it is yawing or luffing, avoid the structure deformation or the aggravation of shaking caused by excessive force on one side, and further limit the torsional freedom of the bridge body, so that the attitude adjustment of the bridge body before docking is more accurate, the buffer support after docking is more stable, and the complex rocking environment at sea is adapted. Among them, the two stabilizing oil cylinders 5 can be symmetrically distributed along the central axis of the main arm 2, and the line connecting the spherical hinge connection between the main arm 2 and the rotating platform 1 and the luffing of the main arm 2 are on the same axis.

[0023] Alternatively, the conical fixed seat 4 and the connected platform are connected by electromagnetic adsorption. It can be understood that the principle of electromagnetic adsorption connection is that the electromagnetic coil built-in the conical fixed seat 4 generates a magnetic field through power supply, and forms electromagnetic adsorption force with the metal adsorption surface on the connected platform to realize quick connection; after power-off, the magnetic field disappears, and the connection is released. Compared with the traditional mechanical locking or bolt connection, the electromagnetic adsorption connection has faster response speed, can quickly complete the adsorption and fixation when there is small relative shaking between the ship and the connected platform, and shortens the docking time. The conical structure itself has the function of keeping the connection surface downward, improving the efficiency and accuracy of connection with the connected platform. At the same time, this connection method does not need complex mechanical transmission parts, and has simple structure and low maintenance cost, which meets the invention goal of reducing the cost and improving the docking efficiency, and guarantees the connection reliability before personnel and material transfer.

[0024] Optionally, the number of luffing oil cylinders 6 is two, and the two luffing oil cylinders 6 are symmetrically arranged along the central axis of the main arm 2. Understandably, the two symmetrically arranged luffing oil cylinders 6 are mainly used to cooperatively adjust the luffing angle of the bridge body and provide support. The principle is to drive the main arm 2 to perform luffing movement with the ball hinge 8 connection point of the rotating platform 1 as the fulcrum by synchronously controlling the extension and retraction amount of the two oil cylinders. The symmetric distribution can balance the force on both sides of the main arm 2, avoiding attitude deviation or mechanism jam caused by excessive load on a single oil cylinder. Before docking, the synchronous action of the two oil cylinders can accurately adjust the height of the bridge body, ensuring that the taper fixing seat 4 matches the docking height of the connected platform; after docking, when the two oil cylinders are in a free state, they can work together as a buffer element to absorb the impact force in the luffing direction transmitted to the bridge body by the ship's rocking through the damping action of the hydraulic oil in the oil cylinder, reducing the luffing amplitude of the bridge body.

[0025] Optionally, it also includes a ladder 9 arranged at the end of the telescopic arm 3. Understandably, through the arrangement of the ladder 9, the convenience and safety of personnel transfer can be improved, so that the gallery bridge not only has the function of material transfer, but also efficiently meets the personnel transfer demand, enhancing the practicality of the gallery bridge.

[0026] Optionally, a guide wheel 10 is arranged between the telescopic arm 3 and the main arm 2. Understandably, the load of the driving member driving the telescopic arm 3 to move is reduced, energy consumption is reduced, and component wear caused by sliding friction is avoided, prolonging the service life of the telescopic arm 3 and the main arm 2. The guide wheel 10 can also guide the telescopic direction of the telescopic arm 3, preventing deviation or jamming during telescoping, ensuring that the telescopic arm 3 moves along a fixed track, and improving the accuracy of the position of the taper fixing seat 4 during docking. In the rocking environment at sea, the rolling characteristics of the guide wheel 10 can better adapt to the small relative displacement between the telescopic arm 3 and the main arm 2, avoiding mechanism jamming and ensuring reliable realization of the telescoping function. The main arm 2 and the telescopic arm 3 can be in the form of a frame, and the telescopic arm 3 is embedded in the main arm 2. The guide wheel 10 can be arranged at the gap between the telescopic arm 3 and the main arm 2.

[0027] Optionally, it also includes a driving member for driving the telescopic arm 3 to perform telescoping movement, the driving member including a gear 11 and a rack 12 matched with the gear 11, the rack 12 being arranged on the telescopic arm 3, and the gear 11 being arranged on the main arm 2. Understandably, this driving method has simple structure and high transmission efficiency. Compared with hydraulic driving and other methods, it does not require complex hydraulic pipelines and pump stations, reducing equipment cost and maintenance difficulty. The gear 11 and rack 12 transmission have high carrying capacity, which can meet the weight load of the telescopic arm 3 and the personnel and materials above. In the harsh environment of sea moisture and salt fog, the structure has strong stability and is not prone to failure, ensuring long-term reliable operation of the telescoping function and improving the overall practicality of the gallery bridge. The gear 11 can be driven to rotate by a motor.

[0028] The new ship corridor bridge without wave compensation realizes the function by optimizing the connection mode of spherical hinge 8 and universal joint 7 and the state switching of stabilizing oil cylinder 5 and pitching oil cylinder 6. The stabilizing oil cylinder 5 and the pitching oil cylinder 6 are locked to control the posture before docking and are freely buffered after docking. This design discards the traditional wave compensation control system with a cost of 15%-30%, greatly reducing the cost. The symmetrical oil cylinder, gear 11 and rack 12 driven lifting structure is balanced and reliable in stress, the conical fixed seat 4 realizes fast docking through electromagnetic adsorption, the telescopic arm 3 end fixed ladder 9 guarantees the safety of transfer, the overall lifting docking efficiency is improved, and the design is suitable for multiple marine operation scenes and helps the construction of marine engineering.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0031] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless specifically defined and limited otherwise, the "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "on", "above" and "under" of a first feature to a second feature include that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. The "under", "below" and "under" of a first feature to a second feature include that the first feature is directly below and obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0033] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and integrate different embodiments or examples described in the present application.

[0034] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A novel wave-compensated ship's gallery bridge, characterized in that, The utility model relates to a bridge body for a ship, comprising: a rotating platform mounted on a ship; a bridge body comprising a main arm and a telescopic arm, the main arm being connected to the rotating platform by a spherical hinge, and the telescopic arm being connected to the main arm by a telescopic connection; a conical fixing base mounted on the telescopic arm for connection with a connected platform, the conical fixing base being connected to the telescopic arm by a universal joint to enable the bridge body to only realize yaw and pitch; a stabilizing oil cylinder connected to the rotating platform by a universal joint to enable the stabilizing oil cylinder to only realize pitch and roll, the stabilizing oil cylinder being connected to the main arm by a spherical hinge; a pitch oil cylinder connected to the rotating platform by a universal joint to enable the pitch oil cylinder to realize pitch and roll, the pitch oil cylinder being connected to the main arm by a spherical hinge; before the conical fixing base is connected to the connected platform, the stabilizing oil cylinder is in a locked state to limit rotation of the bridge body along its own axis, the bridge body driving the conical fixing base to dock with the connected platform by swinging and telescoping; after the conical fixing base is connected to the connected platform, the stabilizing oil cylinder, the telescopic arm and the pitch oil cylinder are all in a free state.

2. The new type of wave-compensated freeboard-reducing ship gallery bridge according to claim 1, characterized in that, The number of stabilizing oil cylinders is one or two, and when the number of stabilizing oil cylinders is two, the two stabilizing oil cylinders are distributed on both sides of the central axis of the main arm one by one.

3. The new type of wave-compensated freeboard-less ship gallery bridge according to claim 1, characterized in that, The conical fixing base is connected to the connected platform by electromagnetic adsorption.

4. The new type of wave-compensated freeboard-less ship gallery bridge according to claim 1, characterized in that, The number of pitch oil cylinders is two, and the two pitch oil cylinders are symmetrically arranged along the central axis of the main arm.

5. The new type of wave-compensated freeboard-less ship gallery bridge according to claim 1, characterized in that, A ladder is further arranged at the end of the telescopic arm.

6. The new type of wave-compensated freeboard-less ship gallery bridge according to claim 1, characterized in that, A guide wheel is arranged between the telescopic arm and the main arm.

7. The new type of wave-compensated freeboard-less ship gallery bridge according to claim 1, characterized in that, A driving member for driving telescopic movement of the telescopic arm is further arranged, the driving member comprising a gear and a rack matched with the gear, the rack being arranged on the telescopic arm and the gear being arranged on the main arm.

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