Steering engine system installation method

Abstract

The invention belongs to the technical field of ships, and discloses a steering engine system installation method which comprises the following steps that a steering engine room is inverted, a steering engine platform is located above an operation area, and a rudder hole is perpendicular to the operation area; hoisting the rudder stock and loading the rudder stock into the rudder hole; the steering engine is placed on a rest stand above the steering engine base and located above the rudderstock; the rudderstock is moved until the lower end of the rudderstock is located below the upper rudder twist and above the lower rudder twist, and then the rudder blade is installed at the lower end of the rudderstock; the steering engine is lifted upwards and leaves the rest stand, after the rest stand is removed, the steering engine is downwards placed on the steering engine base and assembled with the rudderstock, the steering engine and the rudderstock are smoothly installed by adjusting and optimizing the installation sequence of the steering engine system and through a space and time dislocation method, and normal press-fitting operation can be conducted under the condition that the deck layer height is insufficient. In addition, the installation method avoids forming process holes in the hull structure, avoids damaging the hull structure and the strength, and also reduces the workload of field installation.

Description

Technical Field

[0001] The present application relates to the field of ship technology, and in particular to a method for installing a steering gear system. Background Art

[0002] The steering gear is the core device for controlling a ship's course. It works in conjunction with the rudder stock, transmitting power through the rudder stock to the rudder blades to steer the ship in the desired direction. Due to space constraints, the steering gear compartment where the steering gear is located is often narrow and has a low ceiling. Furthermore, the steering gear must be installed from above the rudder stock, which often results in insufficient lifting space.

[0003] In the prior art, a hole is drilled in the hull deck above the steering gear compartment, through which the steering gear is hoisted and then mounted on the rudder stock. However, this installation method not only damages the hull structure and increases subsequent maintenance work, but also increases the difficulty of on-site work and reduces installation efficiency.

[0004] This section provides background information related to the present application which is not necessarily prior art. Summary of the Invention

[0005] The purpose of this application is to solve or at least alleviate part or all of the above problems. To this end, the purpose of this application is to provide a steering gear system installation method that does not require a process hole to be opened on the deck above the steering gear compartment, and is convenient for installation and has high installation efficiency.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] The present application provides a method for installing a steering gear system, which is used to install the steering gear system in a steering gear compartment of a ship. The steering gear system includes a steering gear, a rudder stock, and a rudder blade. The steering gear compartment includes a steering gear platform and a steering gear seat. The steering gear platform has an upper rudder torque and a lower rudder torque. The steering gear platform has a rudder hole that passes through the upper rudder torque and the lower rudder torque. The rudder hole is for the rudder stock to pass through. The steering gear seat is arranged around the rudder hole and is used to support the steering gear. The steering gear system installation method includes the following steps:

[0008] S100, preparation stage: the steering gear cabin is inverted and the steering gear platform is located above the working area, with the rudder hole perpendicular to the working area;

[0009] S200, rudder stock insertion and positioning stage: lifting the rudder stock and inserting it into the rudder hole;

[0010] S300, steering gear pre-positioning stage: placing the steering gear on a shelf above the steering gear seat and above the rudder stock;

[0011] S400, rudder blade assembly stage: the rudder stock is moved until its lower end is below the upper rudder twist and above the lower rudder twist, and then the rudder blade is mounted on the lower end of the rudder stock;

[0012] S500, steering gear assembly stage: hoist the steering gear upward and away from the shelf, remove the shelf, place the steering gear downward on the steering gear seat and assemble it with the rudder stock.

[0013] As an optional solution for the steering gear system installation method, the preparation stage further includes: installing a first hoist in the steering gear cabin and above the steering gear platform; and driving a truck crane to the work area.

[0014] As an optional solution of the steering gear system installation method, the rudder stock hole positioning stage further includes:

[0015] S201, connecting the first end of the tiller with the lifting end of the first hoist, and connecting the second end of the tiller with the lifting end of the truck crane;

[0016] S202: Lift the first end of the rudder stock by using a first hoisting hoist, and tow the second end of the rudder stock by using the truck crane. After the rudder stock is in a vertical state, release the connection between the truck crane and the rudder stock.

[0017] S203: Continue to lift the rudder stock upwards by using the first hoisting hoist, so that the rudder stock moves upwards in the rudder hole until the lower end of the rudder stock moves above the upper rudder knob.

[0018] As an optional solution of the steering gear system installation method, the rudder stock hole positioning stage further includes:

[0019] S204: Arrange a support frame on the upper plane of the lower rudder torsion, and after the rudder bushing is installed on the rudder stock, use the first hoist 200 to place the rudder stock on the support frame;

[0020] S205, setting hanging weights on the outer plate of the hull at the upper rudder twist position, with at least two of the hanging weights being arranged around the circumference of the rudder stock, and then using steel wire ropes in conjunction with the hanging weights to pull and position the rudder stock.

[0021] As an optional solution for the steering gear system installation method, before the steering gear pre-positioning stage, the method further includes: installing a second lifting hoist in the steering gear cabin and being located below the first lifting hoist and above the steering gear platform.

[0022] As an optional solution of the steering gear system installation method, the steering gear pre-positioning stage further includes:

[0023] S301, using the first lifting hoist and the second lifting hoist to place the steering gear on the steering gear seat;

[0024] S302: Use the first hoisting hoist and the second hoisting hoist to lift the steering gear upward, and place the shelf on the steering gear seat;

[0025] S303: Use the first hoist and the second hoist to place the steering gear downward on the shelf.

[0026] As an optional solution of the steering gear system installation method, after step S303 and before step S304, the method further includes: placing a rubber pad on the bearing surface of the shelf.

[0027] As an optional solution to the steering gear system installation method, the rudder blade assembly stage further includes:

[0028] S401, using the first hoisting hoist to lift the rudder stock upward until the lower end of the rudder stock is located below the upper rudder twist and above the lower rudder twist;

[0029] S402, installing a gland of a rudder bushing on the rudder stock;

[0030] S403: Use a hydraulic movable lifting device to move the rudder blade to the working area and lift it upward to a position for assembly with the rudder stock.

[0031] As an optional solution of the steering gear system installation method, before step S403, the method further includes: removing the support frame of the lower rudder torsion.

[0032] As an optional solution to the steering gear system installation method, the steering gear assembly stage further includes:

[0033] S501: Use the first hoisting hoist and the second hoisting hoist to lift the steering gear upwards, and remove the shelf;

[0034] S502: Use the first hoist and the second hoist to place the steering gear downward on the steering gear seat and install it on the rudder stock.

[0035] The beneficial effects of this application are:

[0036] The servo system installation method provided in this application includes the following steps:

[0037] S100, preparation stage: invert the steering gear compartment and place the steering gear platform above the working area, with the rudder hole perpendicular to the working area;

[0038] S200, rudder stock insertion and positioning stage: hoisting the rudder stock and installing it into the rudder hole;

[0039] S300, steering gear pre-positioning stage: placing the steering gear on the shelf above the steering gear seat and above the rudder stock;

[0040] S400, rudder blade assembly stage: move the rudder stock until the lower end of the rudder stock is below the upper rudder twist and above the lower rudder twist, and then install the rudder blade on the lower end of the rudder stock;

[0041] S500, servo assembly stage: lift the servo upwards and remove it from the shelf. After removing the shelf, place the servo downwards on the servo seat and assemble it with the rudder stock.

[0042] The steering gear system installation method provided in this application optimizes the steering gear system installation sequence and achieves smooth installation of the steering gear and rudder stock through spatial and temporal staggering. Furthermore, it allows for normal press-fitting even when the deck height is insufficient. Furthermore, this installation method avoids drilling holes in the hull structure, preventing damage to the hull structure and strength, and reduces on-site installation workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present application and these drawings without any creative work.

[0044] Figure 1 This is a structural diagram of the steering gear system provided in an embodiment of the present application installed in a steering gear compartment.

[0045] Figure 2 This is a first schematic diagram of the first hoisting hoist and the lifting rudder of the truck crane provided in the embodiment of the present application.

[0046] Figure 3 This is a second schematic diagram of the first hoisting hoist and the lifting tiller of the truck crane provided in the embodiment of the present application.

[0047] Figure 4 This is the third schematic diagram of the first hoisting hoist and the lifting rudder of the truck crane provided in the embodiment of the present application.

[0048] Figure 5 This is the fourth schematic diagram of the first hoisting hoist and the lifting rudder of the truck crane provided in the embodiment of the present application.

[0049] Figure 6 This is a schematic diagram of the first hoist provided in an embodiment of the present application lifting the rudder stock upward into the steering gear compartment to install the bushing.

[0050] Figure 7 This is a schematic diagram of the first hoist provided in an embodiment of the present application lifting the rudder stock downward into the rudder hole.

[0051] Figure 8 This is a schematic diagram of positioning the rudder stock and pre-installing the second hoist provided in an embodiment of the present application.

[0052] Figure 9 This is a first schematic diagram of the first and second lifting hoists provided in an embodiment of the present application in conjunction with a pre-installed servo.

[0053] Figure 10 This is a second schematic diagram of the first and second lifting hoists provided in an embodiment of the present application in conjunction with a pre-installed servo.

[0054] Figure 11 This is the third schematic diagram of the first and second lifting hoists provided in the embodiment of the present application in conjunction with the pre-installed servo.

[0055] Figure 12 This is the fourth schematic diagram of the first and second lifting hoists provided in the embodiment of the present application in conjunction with the pre-installed servo.

[0056] Figure 13 This is the first schematic diagram of the first lifting hoist provided in an embodiment of the present application lifting the rudder stock downward to the rudder blade installation position and installing the rudder blade.

[0057] Figure 14 This is the second schematic diagram of installing the rudder blade provided in an embodiment of the present application.

[0058] Figure 15 This is a schematic diagram of the first hoist provided in an embodiment of the present application lifting the rudder pole upward to a position where it cooperates with the servo.

[0059] Figure 16 This is the first schematic diagram of assembling a servo and a rudder stock provided in an embodiment of the present application.

[0060] Figure 17 This is the second schematic diagram of assembling the servo and the rudder stock provided in an embodiment of the present application.

[0061] Reference numerals:

[0062] 100. Steering gear compartment; 101. Steering gear platform; 102. Steering gear seat; 103. Rudder hole; 104. Upper rudder twist; 105. Lower rudder twist; 106. Deck sealing module; 107. Lifting weight; 200. First lifting weight hoist; 300. Truck crane; 400. Second lifting weight hoist; 500. Wooden board; 600. Support frame; 700. Shelf; 800. Hydraulic mobile lifting device; 1. Steering gear; 2. Rudder stock; 3. Rudder blade; 4. First bushing; 5. Second bushing. DETAILED DESCRIPTION

[0063] Figure 1 1 is a schematic diagram of the structure of the steering gear system provided in the embodiment of the present application after being installed in the steering gear cabin 100. Figure 1 As shown, the steering gear system is installed in the steering gear compartment 100 of the ship. The steering gear system is the core equipment for controlling the direction of the ship's navigation. The steering gear system includes a steering gear 1, a rudder stock 2, and a rudder blade 3. The steering gear compartment 100 includes a steering gear platform 101 and a steering gear seat 102. The steering gear platform 101 has an upper rudder torque 104 and a lower rudder torque 105. The steering gear platform 101 has a rudder hole 103 that passes through the upper rudder torque 104 and the lower rudder torque 105. The rudder hole 103 is for the rudder stock 2 to pass through and is used to support the rudder stock 2. The steering gear seat 102 is arranged around the rudder hole 103 to support the steering gear 1. The upper end of the rudder stock 2 extends from the rudder hole 103 to the top of the steering gear platform 101 and is assembled with the steering gear 1. The lower end of the rudder stock 2 is located below the steering gear platform 101 and is assembled with the rudder blade 3.

[0064] In addition, the upper rudder twist 104 is mated with the rudder stock 2 via a rudder bushing to ensure the stability of the rudder stock 2, and the lower rudder twist 105 is mated with the rotating shaft on the rudder blade 3 via a rudder bushing. The rudder bushing includes a first bushing 4 and a second bushing 5. The first bushing 4 is installed in the rudder hole 103 of the upper rudder twist 104, and the second bushing 5 is installed in the rudder hole 103 of the lower rudder twist 105.

[0065] It should be noted that Figure 1 The "up" and "down" shown in the figure are not the "up" and "down" of the ship in the navigation state. According to the structure of the ship, Figure 1 The "up" in the sentence is "front" when the ship is sailing. Figure 1 In order to facilitate the understanding of the steering system installation method provided in this application, Figures 2 to 17 The "up" and "down" of the directions shown are Figure 1 The "up" and "down" of the directions shown are consistent, and the following Figures 1 to 17 The "up" and "down" in the shown directions describe the installation method of the servo system provided in this application.

[0066] like Figures 2 to 17 As shown, the present application provides a steering gear system installation method for installing the steering gear system in a steering gear compartment 100 of a ship. The steering gear system installation method includes the following steps:

[0067] S100, preparation stage: the steering gear cabin 100 is inverted and the steering gear platform 101 is located above the working area, with the steering hole 103 perpendicular to the working area;

[0068] S200, rudder stock insertion and positioning stage: hoist the rudder stock 2 and install it into the rudder hole 103;

[0069] S300, servo pre-positioning stage: placing the servo 1 on the shelf 700 above the servo seat 102 and above the rudder stock 2;

[0070] S400, rudder blade assembly stage: move the rudder stock 2 until the lower end of the rudder stock 2 is located below the upper rudder twist 104 and above the lower rudder twist 105, and then install the rudder blade 3 on the lower end of the rudder stock 2;

[0071] S500 , steering gear assembly stage: lift the steering gear 1 upward and remove it from the shelf 700 . After removing the shelf 700 , place the steering gear 1 downward on the steering gear seat 102 and assemble it with the rudder stock 2 .

[0072] The servo system installation method provided in this application optimizes the hoisting and installation sequence, eliminating the need for additional work and demonstrating the advanced design optimization. This method is simple, reduces on-site process drilling, significantly reduces workload, and offers relatively low tooling costs, resulting in significant economic benefits.

[0073] like Figure 2 As shown, the preparation phase also includes: S101, installing the first hoist 200 in the steering gear compartment 100 and above the steering gear platform 101; driving the truck crane 300 to the work area. S102, transporting the tiller 2 from the workshop to the work area and placing it flat on the work area. These two steps are not in a specific order.

[0074] In step S101, a lifting bracket 107 is welded to the top of the steering gear compartment 100, and then the first lifting bracket 200 is suspended from the lifting bracket 107. Furthermore, the pre-mounted boring bar accessories and the fixing bracket must be welded securely in advance. The first lifting bracket 200 and the truck crane 300 require professional operation.

[0075] In step S102 , the rudder stock 2 is placed flat on the wooden board 500 in the working area to position the rudder stock 2 and prevent the rudder stock 2 from rolling.

[0076] Continue to see Figures 2 to 8As shown, the rudder stock insertion and positioning stage further includes: S201: Connecting the first end of the rudder stock 2 using the lifting end of the first hoist 200, and connecting the second end of the rudder stock 2 using the lifting end of the truck crane 300. S202: Slowly lifting the first end of the rudder stock 2 using the first hoist 200, and then using the truck crane 300 to hold the bottom end of the rudder stock 2 until the rudder stock 2 is in a vertical position during the upward lifting process of the first hoist 200, and then releasing the connection between the truck crane 300 and the rudder stock 2. S203: Continue lifting the rudder stock 2 upward using the first hoist 200, causing the rudder stock 2 to move upward within the rudder hole 103 until the lower end of the rudder stock 2 is located above the upper rudder twist 104. S204: Installing a support frame 600 on the upper surface of the lower rudder twist 105. After the rudder system bushing is installed on the rudder stock 2, the rudder stock 2 is placed on the support frame 600 using the first hoist 200. S205, install a hanging weight 107 on the hull outer plate at the upper rudder twist 104, at least two hanging weights 107 are arranged around the rudder stock 2, and then use a steel wire rope to cooperate with the hanging weight 107 to pull and position the rudder stock 2. These five steps are performed in sequence according to the serial number.

[0077] In step S201, after the wire rope of the first hoisting hoist 200 passes through the rudder hole 103, the hook at its end is hooked with the lifting ring at the first end of the rudder stock 2, and the end of the wire rope of the truck crane 300 is connected to the second end of the rudder stock 2 through the hanging cloth belt.

[0078] In step S202, the first end of the tiller 2 is slowly lifted using the first hoist 200. The truck crane 300 then slowly lifts the tiller 2 and holds it. As the upper end of the tiller 2 moves upward, the truck crane 300 slowly swings in the direction of the tiller 2, taking care to avoid collisions. A wooden board 500 is placed underneath to prevent the tiller 2 from scraping the work area. As the tiller 2 is about to enter the rudder hole 103, careful observation is performed. The lifting point of the truck crane 300 is slowly adjusted to follow the force applied to the tiller 2. The first hoist 200 is then slowly raised, taking care not to damage the tiller 2. Personnel are required to maintain proper positioning to prevent injury.

[0079] In step S203, the tiller 2 is in a vertical position, and the first hoist 200 is slowly raised to the upper plane of the upper rudder block 104. After the tiller 2 reaches a position approximately 500 mm above the upper plane of the upper rudder block 104, the first hoist 200 is used to protect the tiller 2 with a nylon belt or steel wire rope to prevent the tiller 2 from sliding.

[0080] In step S204, a support frame 600 is placed on the upper surface of the lower rudder twist 105. The support frame 600 is bolted to the platform of the lower rudder twist 105. After the rudder bushing is frozen and installed, the rudder stock 2 is slowly placed on the support frame 600 at the lower rudder twist 105. Among them, the support frame 600 can be made of steel piers.

[0081] In step S205, two 5-ton lifting weights 107 are installed at position 0 of the hull outer plating to cooperate with the steel wire rope to pull and fix the rudder stock 2 to prevent the rudder stock 2 from shaking. Then, the first lifting weight hoist 200 is slowly loosened. In addition, after step S205, the deck sealing module 106 is placed in the steering gear seat 102 and centered.

[0082] Continue as Figure 8 As shown, before the steering gear pre-positioning stage, the process also includes: installing the second lifting hoist 400 in the steering gear cabin 100 and being located below the first lifting hoist 200 and above the steering gear platform 101 .

[0083] like Figures 9 and 10 As shown, the servo pre-positioning stage also includes the following steps: S301, using the first hoisting hoist 200 and the second hoisting hoist 400 to place the servo 1 on the servo base 102. S302, using the first hoisting hoist 200 and the second hoisting hoist 400 to lift the servo 1 upward, and placing a shelf 700 on the servo base 102. S303, using the first hoisting hoist 200 and the second hoisting hoist 400 to lower the servo 1 onto the shelf 700. These three steps are performed in sequence.

[0084] In step S301, the first hoist 200 and the second hoist 400 are used to position the servo 1 on the servo seat 102, taking care not to scratch it. In addition, during the positioning of the servo 1, personnel should pay attention to their position to prevent the hoist chain from causing objects to hit them.

[0085] In step S302, the servo 1 is raised by 800 mm using the first hoist 200 and the second hoist 400. During the raising process, the hoists should be raised slowly, and personnel should be careful to avoid being struck by objects from the hoist chain. After the servo 1 is raised, the shelf 700 is placed in place, leveled, and the weight of the servo 1 is slowly reduced onto the shelf 700. The hoists in the servo 1 compartment are not removed to prevent tipping. Furthermore, it is important to ensure that the servo 1 is level and centered on the centerline of the rudder system when placed on the shelf 700 to facilitate raising the rudder stock 2.

[0086] After step S303 and before step S304, the process also includes placing a rubber pad on the bearing surface of the shelf 700. This can prevent the servo 1 from being scratched by direct contact between the servo 1 and the shelf 700, and can also use the rubber pad to level the servo 1 to ensure its stability.

[0087] It should be noted that the upper and lower legs of the shelf 700 must be constrained with the servo seat 102 and the servo 1 chassis using a "7" code.

[0088] like Figures 11 to 15As shown, the rudder blade assembly stage also includes the following steps: S401: Using the first hoist 200 to lift the rudder stock 2 upward until its lower end is located below the upper rudder twist 104 and above the lower rudder twist 105. S402: Removing the support frame 600 of the lower rudder twist 105 and installing the gland of the rudder bushing on the rudder stock 2. S403: Using the hydraulic lifting device 800, the rudder blade 3 is moved to the work area and raised to the position for assembly with the rudder stock 2.

[0089] In step S401, the first hoist 200 is used to pull the rudder stock 2 to the upper rudder knob 104. During the lifting process, the hoist should be pulled slowly, and attention should be paid to the gap between the rudder stock 2 and the steering gear 1, as well as the gap between the rudder stock 2 and the rudder system bushing. Do not operate blindly. Personnel should pay attention to their standing position and are prohibited from placing their hands between the rudder stock 2 and the rudder hole 103 to avoid pinching. In addition, when the rudder stock 2 passes through the deck sealing module 106, care should be taken not to scratch the rubber ring of the deck sealing module 106. After the rudder stock 2 reaches the position, the lifting personnel should use nylon belts or steel wire ropes to double-protect the rudder stock 2 to prevent the hoist chain from causing the rudder stock 2 to slip.

[0090] In step S403, the hydraulic mobile lifting device 800 can use the stern operating hydraulic platform to slowly and steadily install the rudder blade 3 in place. The operator of the hydraulic platform must be skilled and professional. Blind operation is strictly prohibited. The safety studs of the hydraulic platform must be unscrewed and pressed to the ground every time the hydraulic cylinder is lifted by 50 mm to prevent the cylinder from leaking pressure. In addition, the hydraulic platform should obey the unified command of the lifting and move in unison during operation and when lowering the rudder stock 2. The rudder stock 2 and the rudder blade 3 are aligned with the matching marks and pressed according to the rudder system installation process.

[0091] Use the first hoist 200 to lower the tiller 2 to the position where it mates with the upper rudder knob 104. Loosen the first hoist 200 slowly during the lowering process. Pay attention to the gap between the tiller 2 and the steering gear 1, as well as the gap between the tiller 2 and the rudder hole 103 at the upper rudder knob 104. Personnel should pay attention to their standing position and avoid placing their hands between the tiller 2 and the rudder hole 103 to avoid pinching. In addition, ensure that the inner hole of the rudder blade 3 is clean.

[0092] like Figures 16 and 17 As shown, the steering gear assembly stage also includes: S501, using the first lifting hoist 200 and the second lifting hoist 400 to lift the steering gear 1 upward and remove the shelf 700. S502, using the first lifting hoist 200 and the second lifting hoist 400 to lower the steering gear 1 to the steering gear seat 102 and install it on the rudder stock 2.

[0093] In step S501 , the first hoist 200 and the second hoist 400 are used to slowly pull up the shelf 700 . When the servo 1 is completely separated from the shelf 700 , the shelf 700 is removed.

[0094] In step S502, the servo 1 is slowly lowered downward using the first and second hoists 200 and 400, and then installed on the rudder stock 2. Note the gap between the rudder stock 2 and the servo 1. Personnel must be careful not to place their hands between the rudder stock 2 and the rudder hole 103 to avoid injury. Subsequently, press-fit the rudder system according to the installation process. During this process, the rudder hole 103 must be carefully checked for cleanliness.

[0095] It should be noted that both the first hoist 200 and the second hoist 400 can be manual hoists. The advantages of manual hoists are that they do not require external power, have a simple structure and are easy to maintain, are small in size and light in weight, and are easy to carry. They are also flexible in operation, highly safe, and low in cost, and are suitable for a variety of scenarios without power supply or light lifting.

[0096] The steering gear system installation method provided in this application optimizes the steering gear system installation sequence and achieves smooth installation of the steering gear 1 and rudder stock 2 through spatial and temporal staggering. Furthermore, this method allows for normal press-fitting even when the deck height is insufficient. Furthermore, this installation method avoids drilling holes in the hull structure, preventing damage to the hull structure and strength, and reduces on-site installation workload.

[0097] The above shows and describes the basic principles, main features and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of protection of this application.

Claims

1. A method for installing a steering gear system, for installing the steering gear system in a steering gear compartment (100) of a ship, characterized in that: The steering gear system comprises a steering gear (1), a rudder stock (2) and a rudder blade (3); the steering gear cabin (100) comprises a steering gear platform (101) and a steering gear seat (102); the steering gear platform (101) comprises an upper rudder twist (104) and a lower rudder twist (105); the steering gear platform (101) comprises a rudder hole (103) penetrating the upper rudder twist (104) and the lower rudder twist (105); the rudder hole (103) is for the rudder stock (2) to pass through; the steering gear seat (102) is arranged around the rudder hole (103) and is used to support the steering gear (1); and the steering gear system installation method comprises the following steps: S100, preparation stage: the steering gear cabin (100) is inverted and the steering gear platform (101) is located above the working area, and the steering hole (103) is perpendicular to the working area; S200, rudder stock insertion and positioning stage: hoisting the rudder stock (2) and inserting it into the rudder hole (103); S300, steering gear pre-positioning stage: placing the steering gear (1) on a shelf (700) above the steering gear seat (102) and above the rudder stock (2); S400, rudder blade assembly stage: the rudder stock (2) is moved until the lower end of the rudder stock (2) is located below the upper rudder twist (104) and above the lower rudder twist (105), and then the rudder blade (3) is installed on the lower end of the rudder stock (2); S500, steering gear assembly stage: hoist the steering gear (1) upward and away from the shelf (700), remove the shelf (700), place the steering gear (1) downward on the steering gear seat (102) and assemble it with the rudder stock (2).

2. The steering gear system installation method according to claim 1, characterized in that: The preparation stage also includes: installing a first lifting hoist (200) in the steering gear cabin (100) and locating it above the steering gear platform (101); and driving a truck crane (300) to the operation area.

3. The method for installing a steering gear system according to claim 2, wherein: The rudder stock hole positioning stage also includes: S201, using the lifting end of the first hoist (200) to connect the first end of the rudder stock (2), and using the lifting end of the truck crane (300) to connect the second end of the rudder stock (2); S202, using the first hoisting hoist (200) to lift the first end of the rudder stock (2), using the truck crane (300) to drag the second end of the rudder stock (2), and after the rudder stock (2) is in a vertical state, releasing the connection between the truck crane (300) and the rudder stock (2); S203, using the first hoisting hoist (200) to continue lifting the rudder stock (2) upward, so that the rudder stock (2) moves upward in the rudder hole (103) until the lower end of the rudder stock (2) moves above the upper rudder knob (104).

4. The method for installing a steering gear system according to claim 3, wherein: The rudder stock hole positioning stage also includes: S204, arranging a support frame (600) on the upper plane of the lower rudder twist (105), and after the rudder system bushing is installed on the rudder stock (2), placing the rudder stock (2) on the support frame (600) using the first hoist (200); S205, setting a hanging weight (107) on the outer plate of the hull at the upper rudder twist (104), at least two of the hanging weights (107) are arranged around the circumference of the rudder stock (2), and then using a steel wire rope to cooperate with the hanging weights (107) to pull and position the rudder stock (2).

5. The method for installing a steering gear system according to claim 2, wherein: Before the steering gear pre-positioning stage, the method further includes: installing a second lifting hoist (400) in the steering gear cabin (100) and locating the second lifting hoist (400) below the first lifting hoist (200) and above the steering gear platform (101).

6. The steering gear system installation method according to claim 5, characterized in that: The steering gear pre-positioning stage also includes: S301, using the first lifting hoist (200) and the second lifting hoist (400) to place the steering gear (1) on the steering gear seat (102); S302, using the first hoisting hoist (200) and the second hoisting hoist (400) to lift the steering gear (1) upwards, and placing the shelf (700) on the steering gear seat (102); S303: Using the first lifting hoist (200) and the second lifting hoist (400), the steering gear (1) is placed downward on the shelf (700).

7. The steering gear system installation method according to claim 6, characterized in that: After step S303 and before step S304, the method further includes: placing a rubber pad on the bearing surface of the shelf (700).

8. The steering gear system installation method according to claim 4, characterized in that: The rudder blade assembly stage also includes: S401, using the first hoisting hoist (200) to lift the rudder stock (2) upward until the lower end of the rudder stock (2) is located below the upper rudder twist (104) and above the lower rudder twist (105); S402, installing a gland of a rudder bushing on the rudder stock (2); S403: Using a hydraulic movable lifting device (800), the rudder blade (3) is moved to an operating area and lifted upward to a position for assembly with the rudder stock (2).

9. The steering gear system installation method according to claim 8, characterized in that: Before step S403, the method further includes: removing the support frame (600) of the lower rudder twister (105).

10. The steering gear system installation method according to claim 7, characterized in that: The steering gear assembly stage also includes: S501, using the first hoisting hoist (200) and the second hoisting hoist (400) to lift the steering gear (1) upwards, and removing the shelf (700); S502: Using the first hoist (200) and the second hoist (400), the steering gear (1) is placed downward on the steering gear seat (102) and mounted on the rudder stock (2).

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