Method for installing rudder tiller and rudder stock of ship

Abstract

The invention provides a ship tiller and rudderstock installation method which comprises the steps that a tiller penetrates into a rudderstock, and a hydraulic nut is installed; the initial position of the upper hydraulic nut at the moment is determined; and the upper hydraulic nut is pressurized, so that the distance between the position of the upper hydraulic nut and the initial position reaches a preset range, and the distance between the position of the upper hydraulic nut and the initial position is the press-in amount. The upper hydraulic nut is used for pressurizing, and then the press-in amount is obtained, so that the assembly process is completed, and the technical problem that in the prior art, a process method for pressing a part is lacked is solved.

Description

Technical fields:

[0001] This invention relates to the field of shipbuilding technology, and in particular to a method for installing a ship's rudder handle and rudder stock. Background technology:

[0002] The design of a ship's rudder system varies depending on its purpose and configuration. Generally, for steel-hulled seagoing vessels, the main types of rudders selected are fork-type and vane-type. Fork-type rudders mainly consist of an electro-hydraulic cylinder and a rudder handle, which are supplied separately. For vane-type rudders, the rudder handle is the rotor of the rudder and is integrated into the rudder. Before the rudder and rudder stock are sent to the shipyard, the rudder handle or rotor needs to be fitted to the rudder stock to meet tolerance requirements and achieve torque transmission. Currently, shipyards outsource both rudders and rudder stocks. The shipyard provides the design technical requirements, and either ships the rudder handle to the rudder stock manufacturer or the rudder stock to the rudder handle manufacturer for fitting. After fitting, zero-position markings are made, and the rudder handle and rudder stock are separated and sent to the shipyard. During installation at the shipyard, pressing is performed according to the fitting marks. The following is the process flow for the pressing of the rudder handle and rudder stock; the installation is quite complex and presents a significant challenge to shipyard construction. Therefore, there is an urgent need for a method for installing rudder handles and rudder stock to simplify the installation process and improve the efficiency of shipyard construction.

[0003] There is an urgent need for a method for installing ship rudder and rudder stock, which would help solve the technical problem of the lack of a process for press-fitting the part in the existing technology. Summary of the Invention:

[0004] In one embodiment, the present invention provides a method for installing a ship's rudder stick and rudder stock, which uses an upper hydraulic nut to apply pressure and then press in the material to complete the assembly process. This method helps to solve the technical problem of the lack of a pressing process in the prior art.

[0005] The method for installing the ship's rudder and rudder stock includes:

[0006] Insert the rudder handle into the rudder stock and install the hydraulic nut;

[0007] Determine the initial position of the upper hydraulic nut at this time;

[0008] The upper hydraulic nut is pressurized so that the distance between the position of the upper hydraulic nut and the initial position reaches a predetermined range, wherein the distance between the position of the upper hydraulic nut and the initial position is the pressing amount.

[0009] In one embodiment, during the pressurization of the upper hydraulic nut, the initial pressure is 5 MPa, which is used as the initial position.

[0010] In one embodiment, during the pressurization process, the amount of pressure applied to the rudder stick on the rudder stock is recorded each time the propulsion oil pressure is increased by 5 MPa, until the amount of pressure applied reaches 1.0 mm.

[0011] In one embodiment, after the step of recording the amount of pressure applied to the rudder stick on the rudder stock each time the propulsion oil pressure is increased by 5 MPa during the pressurization process, until the amount of pressure applied reaches 1.0 mm, the method further includes:

[0012] Draw the insertion points based on the recorded data and connect them to form the first straight line. Determine the zero-point deviation of the rudder insertion and draw the parallel line of the first straight line as the second straight line.

[0013] Calculate the injection amount and injection pressure based on the second straight line.

[0014] In one embodiment, the pressing amount is The minimum diameter is 4.9 mm, the maximum diameter is 9.9 mm, the minimum pressing force is 5715 kN, and the maximum pressing force is 8353 kN.

[0015] In one embodiment, a thermometer is used to ensure that the rudder handle body and the rudder stock are at the same temperature.

[0016] In one embodiment, after the step of recording the amount of pressure applied to the rudder stick on the rudder stock each time the propulsion oil pressure is increased by 5 MPa during the pressurization process, until the amount of pressure applied reaches 1.0 mm, the method further includes:

[0017] Increase the expansion oil pressure of the rudder body to approximately 50 MPa;

[0018] Increase the propulsion and expansion hydraulic pressure so that the rudder stick is pressed into the rudder stock 1mm each time.

[0019] In one embodiment, when the rudder lever is pressed in to the required amount, the expansion oil pressure is released first, and the propulsion oil pressure is released 5 minutes later.

[0020] In one embodiment, after the step of releasing the expansion oil pressure first when the rudder lever is pressed in to the required amount, and then releasing the propulsion oil pressure 5 minutes later, the method further includes:

[0021] Remove tools such as dial indicators, hoses, and hydraulic pumps;

[0022] Reinstall the screw plugs on the rudder handle body and hydraulic nut.

[0023] In one embodiment, after the step of reinstalling the screw plug on the rudder stem body and the hydraulic nut, the method further includes:

[0024] Install the rudder body and the hydraulic nut into the predetermined position on the hull. Attached image description:

[0025] Figure 1This is a schematic diagram of a ship rudder and rudder post mounting device according to an embodiment of the present invention;

[0026] Figure 2 This is a first schematic diagram illustrating the relationship between pressure and displacement in another embodiment of the present invention;

[0027] Figure 3 This is a second schematic diagram illustrating the relationship between pressure and displacement in another embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the final hull assembly relationship in another embodiment of the present invention.

[0029] Figure label:

[0030] 1-Upper hydraulic nut 2-Rudder stock 3-Rudder handle 4-Upper rudder bearing 5-Rudder stock sleeve 6-Lower hydraulic nut 7-Rudder blade Specific implementation examples:

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0033] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0034] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0035] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0036] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.

[0037] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0038] The technical problem this invention aims to solve is that the height of the support legs can be adjusted according to the actual ship conditions, and their position can be moved within a small range to meet the installation and use requirements of small equipment. This reduces modifications and improves efficiency. The device has a simple design, is easy to manufacture, and the height adjustment method is convenient and easy to use.

[0039] Figure 1 This is a schematic diagram of a ship rudder and rudder post mounting device according to an embodiment of the present invention; Figure 2 This is a first schematic diagram illustrating the relationship between pressure and displacement in another embodiment of the present invention; Figure 3 This is a second schematic diagram illustrating the relationship between pressure and displacement in another embodiment of the present invention; Figure 4 This is a schematic diagram of the final hull assembly relationship in another embodiment of the present invention. Figures 1 to 4 As shown, in one embodiment, the present invention provides a method for installing a ship's rudder shank and rudder stock, the method comprising:

[0040] Insert the rudder handle into the rudder stock and install the hydraulic nut;

[0041] Determine the initial position of the upper hydraulic nut at this time;

[0042] The upper hydraulic nut is pressurized so that the distance between the position of the upper hydraulic nut and the initial position reaches a predetermined range, wherein the distance between the position of the upper hydraulic nut and the initial position is the pressing amount.

[0043] In one embodiment, during the pressurization of the upper hydraulic nut, the initial pressure is 5 MPa, which is used as the initial position.

[0044] In one embodiment, during the pressurization process, the amount of pressure applied to the rudder stick on the rudder stock is recorded each time the propulsion oil pressure is increased by 5 MPa, until the amount of pressure applied reaches 1.0 mm.

[0045] In one embodiment, after the step of recording the amount of pressure applied to the rudder stick on the rudder stock each time the propulsion oil pressure is increased by 5 MPa during the pressurization process, until the amount of pressure applied reaches 1.0 mm, the method further includes:

[0046] Draw the insertion points based on the recorded data and connect them to form the first straight line. Determine the zero-point deviation of the rudder insertion and draw the parallel line of the first straight line as the second straight line.

[0047] Calculate the injection amount and injection pressure based on the second straight line.

[0048] In one embodiment, the pressing amount is The minimum diameter is 4.9 mm, the maximum diameter is 9.9 mm, the minimum pressing force is 5715 kN, and the maximum pressing force is 8353 kN.

[0049] In one embodiment, a thermometer is used to ensure that the rudder handle body and the rudder stock are at the same temperature.

[0050] In one embodiment, after the step of recording the amount of pressure applied to the rudder stick on the rudder stock each time the propulsion oil pressure is increased by 5 MPa during the pressurization process, until the amount of pressure applied reaches 1.0 mm, the method further includes:

[0051] Increase the expansion oil pressure of the rudder body to approximately 50 MPa;

[0052] Increase the propulsion and expansion hydraulic pressure so that the rudder stick is pressed into the rudder stock 1mm each time.

[0053] In one embodiment, when the rudder lever is pressed in to the required amount, the expansion oil pressure is released first, and the propulsion oil pressure is released 5 minutes later.

[0054] In one embodiment, after the step of releasing the expansion oil pressure first when the rudder lever is pressed in to the required amount, and then releasing the propulsion oil pressure 5 minutes later, the method further includes:

[0055] Remove the dial indicator, hoses, and hydraulic pump tools;

[0056] Reinstall the screw plugs on the rudder handle body and hydraulic nut.

[0057] In one embodiment, after the step of reinstalling the screw plug on the rudder stem body and the hydraulic nut, the method further includes:

[0058] Install the rudder body and the hydraulic nut into the predetermined position on the hull.

[0059]

[0060]

[0061] For rudder handle installation, slowly lower the rudder handle and insert it into the rudder stock. The rudder handle and rudder stock use a keyless hydraulic connection. The recommended insertion depth is [insert depth here]. (Minimum 4.9mm, maximum 9.9mm), the minimum pressing force is 5715kN, and the maximum pressing force is 8353kN. During the press-fitting process of the rudder stick and rudder stock, the actual final pressing value may differ from the calculated value due to the influence of factors such as the actual friction coefficient and the environment. In this case, the pressing amount should be taken as the standard, and the calculated pressing force is for reference only. Figure 3 Hydraulic pump unit ② provides axial pressure, while hydraulic pump unit ① provides radial pressure.

[0062] Use a spot thermometer to measure the temperature of the rudder stick and rudder stock.

[0063] Increase the hydraulic pressure to approximately 5 MPa and zero the dial indicator.

[0064] Record the amount of rudder stick pressed into the rudder stock approximately every 5 MPa increase in propulsion oil pressure, until the amount pressed into the stock reaches approximately 1.0 mm (including zero-point deviation). Figure 4 As shown.

[0065] Based on the above measurement data, draw the pressing points and connect them with a straight line, as shown. Figure 4 The “AB” line shown.

[0066] according to Figure 4 The method shown determines the zero-point deviation (Y) of the rudder stick insertion, and then a straight line parallel to "AB" is drawn from point "C" to obtain the friction coefficient during dry pressing. In actual operation, the zero-point deviation (Y) determined during dry pressing of the rudder stick must be less than the required insertion amount (X). In other words, the insertion amount displayed by the dial indicator should be the required insertion amount (X) minus the zero-point deviation (Y).

[0067] Maintain the propulsion hydraulic pressure at approximately 1.0 mm dry pressure, which is the propulsion hydraulic pressure at point "B", and then gradually increase the expansion hydraulic pressure of the rudder handle body to approximately 50 MPa. In this way, without increasing the propulsion hydraulic pressure, the rudder handle will be pressed into the rudder stock a certain distance to point "G".

[0068] Next, gradually increase the propulsion and expansion hydraulic pressure so that the rudder lever is pressed into the rudder stock by 1 mm each time. In this way, the required final position "F" can be achieved. Throughout the entire operation, ensure that the relationship between the expansion hydraulic pressure and the amount of pressure pressed into the rudder lever body meets the requirements.

[0069] When the rudder lever is pressed in to the required depth, release the expansion oil pressure first, and then release the propulsion oil pressure 5 minutes later.

[0070] Remove tools such as dial indicators, hoses, and hydraulic pumps.

[0071] Reinstall the screw plugs on the rudder handle body and hydraulic nut.

[0072] The technical problem to be solved by this invention is to propose a method for installing ship rudder handles and rudder stock. According to a predetermined process, the rudder handle and rudder stock are assembled at an external manufacturer and then transported as a whole to the shipyard. The shipyard only needs to carry out overall hoisting according to process requirements, which effectively reduces the amount of construction materials required by the shipyard and avoids construction quality risks.

[0073] This invention relates to a method for installing a ship's rudder handle and rudder stock, the specific implementation method of which is as follows:

[0074] The ship's steering system mainly consists of seven parts: upper hydraulic nut, rudder stock, rudder handle, upper rudder bearing, rudder stock sleeve, lower hydraulic nut, and rudder blade.

[0075] The upper hydraulic nut is used to fasten the rudder handle and rudder stock;

[0076] The lower hydraulic nut is used to fasten the rudder stock and rudder blade 7;

[0077] The rudder stock sleeve is a sealing and protective device for the rudder stock, with an internal bearing to ensure good support for the middle part of the rudder stock and to transmit torque.

[0078] The rudder stock is used to connect the rudder handle and the rudder blade 7, and transmits the torque at the rudder handle to the rudder blade 7, causing the rudder blade 7 to rotate, thereby changing the ship's direction of travel.

[0079] The upper rudder bearing is the bearing assembly at the top of the rudder stock, ensuring good support for the upper part of the rudder stock and thus effectively transmitting torque.

[0080] The rudder handle is sent to the rudder stock manufacturer, and the inner hole of the rudder handle is fitted according to the established process requirements. After the fitting is completed, the rudder handle is pressed in using a hydraulic nut, thereby assembling the rudder stock, rudder handle, and upper hydraulic nut into a unit.

[0081] During shipyard installation, only the rudder stock, rudder handle, and upper hydraulic nut unit need to be hoisted, reducing shipyard construction procedures and improving construction quality.

[0082] The key point and protected point of this invention is a method for rudder stock and stern stock of a ship, which adopts a modular assembly type, and completes the installation of rudder stock and rudder stock at the machining factory, reducing disassembly and assembly steps and effectively improving the construction efficiency of the shipyard.

[0083] This method eliminates the need for shipyards to install rudder stock and rudder handle. Furthermore, since the assembly work is carried out by a professional manufacturer, the construction quality is effectively guaranteed, ensuring high safety, ease of construction, and avoiding construction quality problems.

[0084] Beneficial effects:

[0085] 1. This method uses a modular assembly approach, which improves the efficiency and success rate of rudder system installation in shipyards.

[0086] 2. This method involves installation at the machining factory, avoiding subsequent disassembly and reassembly work and reducing waste of manpower and other resources.

[0087] 3. Compared with the original bulk shipment captain installation method, this method is safer and more reliable in terms of quality, and reduces the risks of disassembly and assembly.

[0088] 4. This method is simple and reliable to operate.

[0089] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A method for installing a ship's rudder handle and rudder post, characterized in that, The method for installing the ship's rudder and rudder stock includes: Insert the rudder handle (3) into the rudder stock and install the hydraulic nut (1); Determine the initial position of the upper hydraulic nut (1) at this time; Pressurize the upper hydraulic nut (1) so that the distance between the position of the upper hydraulic nut (1) and the initial position reaches a predetermined range, wherein the distance between the position of the upper hydraulic nut (1) and the initial position is the pressing amount.

2. The method for installing a ship's rudder handle and rudder post according to claim 1, characterized in that, During the pressurization process of the upper hydraulic nut (1), the initial pressure is 5MPa, which is used as the initial position.

3. The method for installing a ship's rudder handle and rudder stock according to claim 2, characterized in that, During the pressurization process, the amount of pressure applied to the rudder stick (2) is recorded once for each 5MPa increase in propulsion oil pressure until the amount of pressure applied reaches 1.0mm.

4. The method for installing a ship's rudder handle and rudder stock according to claim 3, characterized in that, During the pressurization process, the method further includes recording the amount of pressure applied to the rudder stick on the rudder stock each time the propulsion oil pressure is increased by 5 MPa, until the amount of pressure applied reaches 1.0 mm. Draw the insertion point according to the recorded data and connect them to form the first straight line to determine the rudder (3); insert the zero point deviation and draw the parallel line of the first straight line as the second straight line; Calculate the injection amount and injection pressure based on the second straight line.

5. The method for installing a ship's rudder handle and rudder stock according to claim 4, characterized in that, The indentation amount is The minimum diameter is 4.9 mm, the maximum diameter is 9.9 mm, the minimum pressing force is 5715 kN, and the maximum pressing force is 8353 kN.

6. The method for installing a ship's rudder handle and rudder stock according to claim 5, characterized in that, Ensure the temperature of the rudder body and rudder stick (2) is the same by using a thermometer.

7. The method for installing a ship's rudder handle and rudder stock according to claim 6, characterized in that, During the pressurization process, the amount of pressure in the rudder handle on the rudder stock (2) is recorded once for each 5MPa increase in propulsion oil pressure until the amount of pressure reaches 1.0mm. After this step, the method further includes: Increase the expansion oil pressure of the rudder body to approximately 50 MPa; Increase the propulsion and expansion hydraulic pressure so that the rudder stick is pressed into the rudder stock 1mm each time.

8. The method for installing a ship's rudder handle and rudder stock according to claim 7, characterized in that, When the rudder lever is pressed in to the required depth, release the expansion oil pressure first, and then release the propulsion oil pressure 5 minutes later.

9. The method for installing a ship's rudder handle and rudder stock according to claim 8, characterized in that, After the step of releasing the expansion oil pressure first and then releasing the propulsion oil pressure 5 minutes later when the rudder stick is pressed in to the required amount, the method further includes: Remove the dial indicator, hoses, and hydraulic pump tools; Reinstall the rudder body and the screw plug on the upper hydraulic nut (1).

10. The method for installing a ship's rudder handle and rudder stock according to claim 9, characterized in that, After the step of reinstalling the screw plugs on the rudder stem body and the hydraulic nut, the method further includes: Install the rudder body and the upper hydraulic nut (1) into the predetermined position on the hull.

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