A jacking device and method for a ship roll-on / roll-off device

Abstract

The application discloses a jacking device and a jacking method for a ship roll-on / roll-off device, and relates to the technical field of lifting of a ship roll-on / roll-off device. The jacking device for the ship roll-on / roll-off device comprises a plurality of support tools, a plurality of hydraulic jacking devices and a master control device. The plurality of tool supports are arranged at intervals on the two sides of the roll-on / roll-off device to be jacked up, the tool supports are fixedly connected with the roll-on / roll-off device, and the bottom of each tool support is provided with a positioning structure. The plurality of hydraulic jacking devices are arranged below each tool support, the top of each hydraulic jacking device is matched with the positioning structure, and each hydraulic jacking device is used for jacking up the roll-on / roll-off device. The master control device is used for controlling the synchronous jacking of the plurality of hydraulic jacking devices. The jacking device provided by the application can realize the jacking of the roll-on / roll-off device without welding temporary lifting lugs or opening process holes on the movable deck, effectively reduces the processes of lifting lug welding, removal, repair welding and process hole opening and plugging, significantly reduces the construction workload, and improves the ship manufacturing efficiency.

Description

Technical Field

[0001] This application relates to the technical field of lifting ship roll-on / roll-off equipment, and more particularly to a lifting device and lifting method for ship roll-on / roll-off equipment. Background Technology

[0002] During the installation and commissioning of roll-on / roll-off (Ro-Ro) equipment, it is usually necessary to lift the ramp or ramp cover. Current technology mainly uses manual hoists for this purpose. Taking the movable ramp cover as an example, the lifting process includes: sequentially hoisting the movable ramp cover and movable deck into position; after the hull section is hoisted and welded, welding clamps are welded at the corresponding positions of the hull section and the movable ramp cover; process holes are opened on the movable deck; then, hoists are installed on the clamps, allowing the hoists to pass through the movable deck and connect to the movable ramp cover; using four hoists, with two people manually operating at each location, the movable ramp cover is lifted to the predetermined height; finally, it is fixed by welding with round pipe supports.

[0003] Currently, existing jacking operations require welding multiple load-bearing lifting brackets and drilling process holes, which increases construction procedures and damages the integrity of the deck structure. In addition, a lot of manpower is required for manual operation, which is labor-intensive and inefficient. At the same time, the jacking operation is limited by the hoisting and welding cycle of the hull section. The connection between the preceding and following processes is close, and the overall construction cycle is long, which is not conducive to the rapid advancement of roll-on / roll-off equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a lifting device and lifting method for ship roll-on / roll-off equipment, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On the one hand, a lifting device for ship roll-on / roll-off equipment is provided, comprising: Multiple tooling supports are spaced apart on both sides of the roll-on / roll-off equipment to be lifted. The tooling supports are fixedly connected to the roll-on / roll-off equipment, and the bottom of the tooling supports is provided with a positioning structure. Multiple hydraulic lifting devices are respectively installed below each tooling support, and the top of each hydraulic lifting device is adapted to the positioning structure for lifting the roll-on / roll-off equipment; and The main control device is connected to each hydraulic lifting device via hydraulic hoses. The main control device includes a hydraulic pump station, a control valve group, and an operation panel, and is used to control the synchronous lifting of each hydraulic lifting device.

[0007] Preferably, the plurality of tooling supports are evenly spaced on both sides of the roll-on / roll-off equipment.

[0008] Preferably, the main control device further includes a displacement sensor for real-time monitoring of the lifting height of each hydraulic lifting device, and a pressure sensor for detecting the load status; The main control device is configured to adjust the operating conditions of each hydraulic lifting device in real time based on the sensing data of the displacement sensor and pressure sensor, so as to achieve synchronous lifting of the roll-on / roll-off equipment.

[0009] Preferably, it also includes temporary supports for securing the roll-on / roll-off equipment after it has been lifted into place; The temporary support is a rigid structure that is adjustable in length.

[0010] Preferably, the temporary support is a circular tube support, with the upper end of the circular tube support connected to the roll-on / roll-off equipment and the lower end connected to the hull structure below the roll-on / roll-off equipment.

[0011] Preferably, the tooling support includes a first support arm and a second support arm that are perpendicular to each other. One end of the second support arm is fixedly connected to the roll-on / roll-off equipment, the first support arm extends to the edge of the roll-on / roll-off equipment, and the positioning structure is disposed on the first support arm.

[0012] On the other hand, this disclosure also provides a lifting method for ship roll-on / roll-off equipment, employing the lifting device described in any of the above claims, comprising the following steps: Step S10: Multiple tooling supports are spaced apart on both sides of the roll-on / roll-off equipment to be lifted, and the tooling supports are fixedly connected to the roll-on / roll-off equipment. Step S20: Multiple hydraulic lifting devices are respectively installed below each tooling support, so that the top of each hydraulic lifting device is adapted to the positioning structure at the bottom of the tooling support. Step S30: The main control device controls each hydraulic lifting device to lift synchronously, raising the roll-on / roll-off equipment to a predetermined height; Step S30: Use temporary supports to secure the roll-on / roll-off equipment that has been raised to the predetermined height.

[0013] Preferably, in the step of controlling the synchronous lifting of each hydraulic lifting device through the main control device, the main control device monitors the lifting height and load status of each hydraulic lifting device in real time through displacement sensors and pressure sensors, and achieves precise control of synchronous lifting through closed-loop control.

[0014] Preferably, during the jacking process, the main control device adopts segmented intermittent jacking control, including: After each preset distance of lifting, the process is paused to check the synchronicity of each hydraulic lifting device and the stability of the roll-on / roll-off equipment. Once the preset requirements are met, the lifting continues.

[0015] Preferably, in step S40, the temporary support is a circular tube support, and the upper end of the circular tube support is fixedly connected to the roll-on / roll-off equipment by welding, and the lower end is fixedly connected to the hull structure below. The beneficial effects of this application are as follows: By employing a jacking device to lift the roll-on / roll-off (Ro-Ro) equipment, the need for welding temporary lifting brackets and drilling process holes on the movable deck during the jacking process is eliminated. This effectively reduces the number of steps involved in installing, removing, and repairing lifting brackets, as well as drilling and sealing process holes, significantly reducing the workload. Furthermore, the jacking operation is no longer dependent on the progress of the lifting and welding of the upper hull sections and can be carried out independently after the Ro-Ro equipment is in place, facilitating the rapid advancement of the Ro-Ro equipment installation process.

[0016] Through hydraulic synchronous jacking and segmented intermittent control, operators can remotely control the equipment without having to perform close-range high-altitude work below it. With the real-time monitoring and automatic adjustment of displacement and pressure sensors, risks such as equipment tilting and overload can be effectively prevented, significantly improving construction safety. Attached Figure Description

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of a lifting device for ship roll-on / roll-off equipment according to an embodiment of this application; Figure 2 for Figure 1 Schematic diagram of the cross-section of BB and GG; Figure 3 This is a schematic diagram of a tooling support for a lifting device for ship roll-on / roll-off equipment according to an embodiment of this application; Figure 4 This is a schematic diagram of the layout structure of a temporary support for a lifting device for ship roll-on / roll-off equipment according to an embodiment of this application; Figure 5 This is a schematic diagram of the connection structure of the main control device of a lifting device for ship roll-on / roll-off equipment according to an embodiment of this application; Figure 6 This is a schematic flowchart illustrating a lifting method for ship roll-on / roll-off equipment according to an embodiment of this application.

[0019] In the picture: 10. Roll-on / roll-off equipment; 100. Tooling support; 110. First support arm; 111. Positioning structure; 120. Second support arm; 130. Support rod; 200. Hydraulic jacking device; 300. Main control device; 310. Hydraulic pump station; 320. Control valve group; 330. Operation panel; 340. Displacement sensor; 350. Pressure sensor; 400. Temporary support. Detailed Implementation

[0020] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction 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.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] Please see Figures 1 to 5 This embodiment provides a lifting device for a ship roll-on / roll-off (Ro-Ro) equipment 10, including multiple tooling supports 100, multiple hydraulic lifting devices 200, and a main control device 300. The multiple tooling supports 100 are spaced apart on both sides of the Ro-Ro equipment 10 to be lifted, and are fixedly connected to the Ro-Ro equipment 10, specifically by welding or bolting. The bottom of each tooling support 100 is provided with a positioning structure 111 for positioning in conjunction with the top of the hydraulic lifting device 200.

[0024] In this embodiment, the roll-on / roll-off equipment 10 is the movable ramp or movable ramp cover of the ship's roll-on / roll-off system, but it is not limited to this; this lifting device can be used for various types of equipment, plates and hull modules that need to be lifted during the ship construction process.

[0025] Furthermore, multiple hydraulic lifting devices 200 are respectively disposed below each tooling support 100, and the top of each hydraulic lifting device 200 is adapted to the positioning structure 111 to ensure that no relative slippage occurs between the hydraulic lifting device 200 and the tooling support 100 during the lifting process. For example, the hydraulic lifting device 200 can be a hydraulic jack to achieve stable lifting of the roll-on / roll-off equipment 10.

[0026] Furthermore, the main control device 300 is connected to each hydraulic lifting device 200 via hydraulic hoses. The main control device 300 includes a hydraulic pump station 310, a control valve group 320, and an operation panel 330, used to control the synchronous lifting of each hydraulic lifting device 200. Specifically, the operator issues control commands through the operation panel 330, and the control valve group 320 adjusts the hydraulic flow and pressure of each hydraulic lifting device 200 to achieve synchronous operation of multiple devices.

[0027] This solution replaces the traditional manual hoist lifting method with a hydraulic synchronous lifting method through the cooperation of tooling support 100, hydraulic jacking device 200, and main control device 300. Operators only need to use the main control device 300 to achieve multi-point synchronous control, eliminating the need to weld temporary lifting brackets to the roll-on / roll-off equipment 10 and the hull structure, as well as the need to open process holes on the deck, effectively reducing construction procedures, lowering labor intensity, and improving jacking operation efficiency.

[0028] In one embodiment, multiple tooling supports 100 are evenly spaced on both sides of the roll-on / roll-off equipment 10. Specifically, they can be arranged symmetrically on both sides according to the center of gravity and structural strength of the roll-on / roll-off equipment 10, so that the spacing between each tooling support 100 is basically equal. Preferably, the tooling supports 100 are configured in four groups, with two groups symmetrically arranged on each side of the roll-on / roll-off equipment 10.

[0029] By arranging the tooling supports 100 at even intervals, the lifting load can be evenly distributed, avoiding local stress concentration that could cause deformation or damage to the roll-on / roll-off equipment 10, and ensuring a smooth and safe lifting process; at the same time, it can reduce the tilting of the roll-on / roll-off equipment 10 during the lifting process and improve operational safety.

[0030] In one embodiment, the operation panel 330 of the main control device 300 can be a PLC control unit or a control module with data processing function, which can be selected according to actual usage requirements.

[0031] The main control unit 300 also includes a displacement sensor 340 for real-time monitoring of the lifting height of each hydraulic lifting device 200, and a pressure sensor 350 for detecting the load status. The displacement sensor 340 is located at the telescopic rod of each hydraulic lifting device 200, and the pressure sensor 350 is located in the hydraulic oil circuit of each hydraulic lifting device 200.

[0032] The main control device 300 is configured to adjust the operating conditions of each hydraulic lifting device 200 in real time based on feedback data from the displacement sensor 340 and the pressure sensor 350, thereby achieving precise and synchronous lifting of the roll-on / roll-off equipment 10. The main control device 300 can preset the displacement-pressure-operating condition correspondence to achieve control over the lifting distance and lifting speed according to the lifting requirements of different types of roll-on / roll-off equipment 10.

[0033] Specifically, the main control device 300 collects the lifting height and load pressure of each hydraulic lifting device 200 in real time. When a device lags behind or leads in height, the hydraulic supply is adjusted by the control valve group 320 to keep all lifting devices synchronized.

[0034] Real-time monitoring and closed-loop control are achieved through displacement sensor 340 and pressure sensor 350, which can accurately ensure the synchronization of each lifting device, avoid tilting of the roll-on / roll-off equipment 10 or uneven force due to asynchrony, and improve the accuracy and safety of lifting operations.

[0035] In one embodiment, after the roll-on / roll-off equipment 10 is lifted into place, a temporary support 400 is set between the roll-on / roll-off equipment 10 and the hull structure below.

[0036] The temporary support 400 is used to fix the roll-on / roll-off equipment 10 after it has been lifted into place. The temporary support 400 is a rigid structure that is adjustable in length. For example, it can be a threaded telescopic type, a sleeve type or a hydraulically adjustable type to adapt to different lifting heights.

[0037] By setting an adjustable-length temporary support 400, it can be quickly fixed after being lifted into place, and the hydraulic jacking device 200 can be removed without waiting for welding, thus improving equipment turnover efficiency. At the same time, it can adapt to different lifting heights, improve the versatility of the device, and avoid the safety risks caused by the failure of the hydraulic jacking device 200.

[0038] In one embodiment, the temporary support 400 is a circular tube support. The upper end of the circular tube support is connected to the roll-on / roll-off equipment 10, and the lower end is connected to the hull structure below the roll-on / roll-off equipment 10. For example, the circular tube support can be made of a circular tube with a diameter of 168 mm, and the length can be pre-cut or adjusted on-site according to the lifting height. Connecting plates can be installed at both ends of the circular tube support, which are fixed to the roll-on / roll-off equipment 10 and the hull structure by bolts or welding.

[0039] Using round tube supports as temporary supports 400 is simple in structure, has strong load-bearing capacity, and is easy to obtain materials. It can stably support the roll-on / roll-off equipment 10 at a predetermined height, providing reliable working conditions for the subsequent installation of hinges and other components.

[0040] In one embodiment, the tooling support 100 includes a first support arm 110 and a second support arm 120 that are perpendicular to each other. One end of the second support arm 120 is fixedly connected to the roll-on / roll-off equipment 10, the first support arm 110 extends to the outer edge of the roll-on / roll-off equipment 10, and a positioning structure 111 is disposed at the bottom of the first support arm 110.

[0041] Specifically, the first support arm 110 extends horizontally outward, and the second support arm 120 is vertically arranged and fixed to the side of the roll-on / roll-off equipment 10. The positioning structure 111 may be a positioning groove opened at the bottom of the first support arm 110, the shape of which matches the shape of the end of the telescopic rod of the hydraulic lifting device 200.

[0042] Furthermore, a reinforcing rod 130 can be provided between the first support arm 110 and the second support arm 120 to form a triangular stable structure, thereby improving the overall strength and stability of the tooling support 100.

[0043] By using the L-shaped tooling support structure 100, the hydraulic jacking device 200 can be arranged on the outside of the roll-on / roll-off equipment 10, avoiding interference with the structure below and facilitating installation and operation; at the same time, the load transfer is reasonable and the force is stable, ensuring the reliability of the jacking process.

[0044] On the other hand, please see Figure 6 This disclosure also provides a lifting method for a ship roll-on / roll-off equipment 10, implemented using the lifting device described in any of the above embodiments, comprising the following steps: In step S10, multiple tooling supports 100 are spaced apart on both sides of the roll-on / roll-off equipment 10 to be lifted, and the tooling supports 100 are fixedly connected to the roll-on / roll-off equipment 10. Specifically, depending on the weight and structural form of the roll-on / roll-off equipment 10, four or more tooling supports 100 can be symmetrically arranged and fixed by welding or bolting.

[0045] In step S20, multiple hydraulic lifting devices 200 are respectively placed below each tooling support 100, so that the top of each hydraulic lifting device 200 is adapted to the positioning structure 111 at the bottom of the tooling support 100, ensuring that the hydraulic lifting device 200 is placed vertically and reliably positioned, and preventing slippage during the lifting process.

[0046] In step S30, the main control device 300 controls each hydraulic lifting device 200 to lift synchronously, raising the roll-on / roll-off equipment 10 to a predetermined height. The operator issues commands through the control panel 330, and the main control device 300 controls each hydraulic lifting device 200 to operate synchronously, smoothly raising the roll-on / roll-off equipment 10.

[0047] In step S40, temporary supports 400 are used to fix the roll-on / roll-off equipment 10, which has been raised to a predetermined height, so that the roll-on / roll-off equipment 10 is stably maintained at the set height.

[0048] Using the above method, the hydraulic synchronous lifting of the roll-on / roll-off equipment 10 can be achieved without welding temporary lifting brackets or opening process holes, which greatly simplifies the construction process. Only a small number of personnel are needed to complete the operation, reducing labor intensity and shortening the construction cycle.

[0049] In one embodiment, in the step of controlling the synchronous lifting of each hydraulic lifting device 200 by the main control device 300, the main control device 300 monitors the lifting height and load status of each hydraulic lifting device 200 in real time through displacement sensor 340 and pressure sensor 350, and achieves precise adjustment of synchronous lifting through closed-loop control.

[0050] Specifically, the main control device 300 collects displacement and pressure data in real time, calculates the height and pressure differences between each device through a control algorithm, and automatically adjusts the hydraulic output when deviations occur to keep all lifting devices synchronized. Closed-loop control can correct asynchrony errors in real time, ensuring that the roll-on / roll-off equipment 10 remains level during lifting, preventing equipment tilting or overloading, and improving operational accuracy and reliability.

[0051] In one implementation, the lifting process is controlled in a segmented intermittent manner: after each preset distance of lifting, the process is paused to check the synchronicity of each hydraulic lifting device 200 and the stability of the roll-on / roll-off equipment 10. Lifting continues only after the preset requirements are met.

[0052] Specifically, the lifting stroke can be divided into multiple segments, with each segment's lifting distance set to 50mm to 100mm. After each segment is completed, the system pauses, automatically detects the height difference and tilt angle, and continues lifting the next segment only after confirming that the parameters are within acceptable limits.

[0053] Segmented intermittent control can detect and handle anomalies in a timely manner, avoid cumulative errors that could lead to significant tilting, and improve the safety and accuracy of lifting large heavy-duty roll-on / roll-off equipment.

[0054] In one embodiment, in the step of securing the roll-on / roll-off equipment 10, which has been raised to a predetermined height, with a temporary support 400, the temporary support 400 is a circular tube support. The upper end of the circular tube support is fixed to the roll-on / roll-off equipment 10, and the lower end is fixed to the hull structure below, by welding. The temporary support 400 is removed after the subsequent hinge installation is completed and confirmed to be reliable. It is understood that welding provides high connection strength and stability, offering stable support for subsequent installation operations and is suitable for on-site construction environments on ships.

[0055] In summary, the jacking device and method for the ship roll-on / roll-off equipment 10 provided in this disclosure, by using the jacking device to lift the roll-on / roll-off equipment 10, eliminates the need for welding temporary lifting brackets during the jacking process and for opening process holes in the movable deck. This reduces the number of procedures such as welding, removing, and repairing lifting brackets, as well as opening and sealing process holes, significantly reducing the workload. Furthermore, the jacking operation is no longer dependent on the lifting and welding progress of the upper hull section and can be carried out independently after the roll-on / roll-off equipment 10 is in place, facilitating the rapid advancement of the roll-on / roll-off equipment 10 installation process.

[0056] With hydraulic synchronous lifting and segmented intermittent control, operators can remotely control the equipment without having to perform close-range high-altitude work below it. Combined with real-time monitoring and automatic adjustment by displacement sensor 340 and pressure sensor 350, it can effectively prevent risks such as equipment tilting and overload, significantly improving construction safety.

[0057] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0058] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0060] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A lifting device for ship roll-on / roll-off equipment, characterized in that, include: Multiple tooling supports (100) are spaced apart on both sides of the roll-on / roll-off equipment (10) to be lifted. The tooling supports (100) are fixedly connected to the roll-on / roll-off equipment (10), and the bottom of the tooling supports (100) is provided with a positioning structure (111). Multiple hydraulic lifting devices (200) are respectively installed below each tooling support (100), and the top of each hydraulic lifting device (200) is adapted to the positioning structure (111) for lifting the roll-on / roll-off equipment (10); and The main control device (300) is connected to each hydraulic lifting device (200) via hydraulic hoses. The main control device (300) includes a hydraulic pump station (310), a control valve group (320), and an operation panel (330) for controlling the synchronous lifting of each hydraulic lifting device (200).

2. The lifting device for ship roll-on / roll-off equipment according to claim 1, characterized in that, The plurality of tooling supports (100) are evenly spaced on both sides of the roll-on / roll-off equipment (10).

3. The lifting device for ship roll-on / roll-off equipment according to claim 1, characterized in that, The main control device (300) also includes a displacement sensor (340) for real-time monitoring of the lifting height of each hydraulic lifting device (200), and a pressure sensor (350) for detecting the load status. The main control device (300) is configured to adjust the working conditions of each hydraulic lifting device (200) in real time based on the sensing data of the displacement sensor (340) and the pressure sensor (350) in order to achieve synchronous lifting of the roll-on / roll-off equipment (10).

4. The lifting device for ship roll-on / roll-off equipment according to claim 1, characterized in that, It also includes a temporary support (400) for securing the roll-on / roll-off equipment (10) in place after it has been lifted into position; The temporary support (400) is a rigid structure that is adjustable in length.

5. The lifting device for ship roll-on / roll-off equipment according to claim 4, characterized in that, The temporary support (400) is a circular tube support. The upper end of the circular tube support is connected to the roll-on / roll-off equipment (10), and the lower end is connected to the hull structure below the roll-on / roll-off equipment (10).

6. The lifting device for ship roll-on / roll-off equipment according to claim 1, characterized in that, The tooling support (100) includes a first support arm (110) and a second support arm (120) that are perpendicular to each other. One end of the second support arm (120) is fixedly connected to the roll-on / roll-off equipment (10). The first support arm (110) extends to the edge of the roll-on / roll-off equipment (10). The positioning structure (111) is disposed on the first support arm (110).

7. A lifting method for ship roll-on / roll-off equipment, characterized in that, The lifting device according to any one of claims 1 to 6 comprises the following steps: Step S10: Multiple tooling supports (100) are spaced apart on both sides of the roll-on / roll-off equipment (10) to be lifted, and the tooling supports (100) are fixedly connected to the roll-on / roll-off equipment (10). Step S20: Multiple hydraulic lifting devices (200) are respectively set below each tooling support (100), so that the top of each hydraulic lifting device (200) is adapted to the positioning structure (111) at the bottom of the tooling support (100); In step S30, the main control device (300) controls each hydraulic lifting device (200) to lift synchronously, raising the roll-on / roll-off equipment (10) to a predetermined height; Step S40: Use temporary supports (400) to secure the roll-on / roll-off equipment (10) that has been raised to a predetermined height.

8. The lifting method for ship roll-on / roll-off equipment according to claim 7, characterized in that, In the step of controlling each hydraulic lifting device (200) to lift synchronously through the main control device (300), the main control device (300) monitors the lifting height and load status of each hydraulic lifting device (200) in real time through displacement sensor (340) and pressure sensor (350), and achieves precise control of synchronous lifting through closed-loop control.

9. The lifting method for ship roll-on / roll-off equipment according to claim 7 or 8, characterized in that, During the jacking process, the main control device (300) adopts segmented intermittent jacking control, including: After each preset distance of lifting, pause and check the synchronization of each hydraulic lifting device (200) and the stability of the roll-on / roll-off equipment (10). After confirming that the preset requirements are met, continue lifting.

10. The lifting method for ship roll-on / roll-off equipment according to claim 7, characterized in that, In step S40, the temporary support (400) is a circular tube support, and the upper end of the circular tube support is fixedly connected to the roll-on / roll-off equipment (10) by welding, and the lower end is fixedly connected to the hull structure below.

Images