Marine rudder horn and casting process thereof

Abstract

The invention discloses a marine rudder horn and a casting process thereof. The casting process comprises the following steps: S1, preparing materials; s2, producing and casting; according to the method, casting machining of the marine rudder horn is achieved, the overall strength of the marine rudder horn is effectively guaranteed, meanwhile, in the step S3 and post-treatment, paint spraying operation is conducted on the marine rudder horn through a paint spraying equipment body, synchronous paint spraying can be conducted on the inner side and the outer side of the marine rudder horn, the paint spraying efficiency is effectively improved, the construction period is shortened, and the production cost is reduced. The production efficiency of the marine rudder horn is improved, the device is not affected by the size of the marine rudder horn, the device can adapt to the marine rudder horns of different sizes, the applicability is wide, and different use requirements of people can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and specifically relates to a marine rudder carrier and its casting process. Background Art

[0002] The marine rudder carrier, which is part of the hull structure, is a key load-bearing component in the ship's rudder shafting system. It is mainly used to support and hang the rudder structure, connect the hull and the rudder, and bear the bending fatigue stress transmitted by the rudder system during navigation, directly affecting the ship's maneuverability and safety.

[0003] For a marine rudder carrier cast from a single material, it is difficult to balance its strength and toughness, and key parts, such as the rudder handle connection, are prone to fatigue cracking. At the same time, when painting the outer side and the inner cavity of the marine rudder carrier, it is usually painted manually on one side, which is rather cumbersome and inconvenient. Moreover, for some marine rudder carriers with longer dimensions and deeper inner cavities, it is difficult for workers to reach, which may affect the painting effect, and further affect the protection effect of the marine rudder carrier, and may affect the normal use and service life of the marine rudder carrier. Summary of the Invention

[0004] The purpose of the present invention is to provide a marine rudder carrier and its casting process to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A casting process for a marine rudder carrier includes the following steps: S1. Material preparation; S11. Prepare raw materials; S12. Prepare the mold for casting; S13. Preset a framework in the mold; S14. Melt the raw materials; S2. Production casting; S21. Pour the melted raw materials into the mold; S22. Slowly cool; S23. Demold; S24. Anneal / normalize; S25. High-temperature tempering after quenching; S3. Post-treatment; S31. Grind and remove the burrs on the surface of the marine rudder carrier; S32. Sandblast the surface of the marine rudder carrier; S33. Spray paint the marine rudder carrier through the main body of the painting equipment; S34. Air-dry the marine rudder carrier; S35. Place the marine rudder carrier in a cool and dry place for storage.

[0006] Preferably, in step S14, when melting the raw materials, a deoxidizer needs to be added.

[0007] Preferably, in step S13, the skeleton is honeycomb-shaped.

[0008] Preferably, in step S21, a bottom-pouring or stepped pouring method is adopted.

[0009] Preferably, a group of connecting plates are connected to both the upper and lower ends of the front of the rudder arm body. Through holes are provided in the middle of the two groups of connecting plates. A cavity is provided at the inner end of the rudder arm body, and a group of reinforcing plates are connected to the middle of the cavity.

[0010] Preferably, a strengthening skeleton is provided on the inner wall of the rudder arm body. An inner paint one is provided inside the cavity, an inner paint two is provided inside the inner paint one, an outer paint one is provided on the outside of the rudder arm body, and an outer paint two is provided on the outside of the outer paint one.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through steps S1, material preparation; S2, production casting; S3, post-treatment, etc., the present invention realizes the production casting of the marine hanging rudder arm, which can effectively improve the overall strength of the marine hanging rudder arm, avoid the difficulty in balancing the strength and toughness of the marine hanging rudder arm caused by a single raw material, and effectively improve the service life of the marine hanging rudder arm; 2. Through the paint spraying equipment main body in step S33, the paint spraying equipment main body includes components such as support columns, moving mechanisms, and paint spraying mechanisms, etc. It can spray paint on the inner and outer surfaces of the marine hanging rudder arm at the same time, which can effectively improve work efficiency, reduce labor costs, and be applicable to marine hanging rudder arms of different sizes and heights, effectively expanding the scope of application; 3. Through the paint spraying mechanism provided in the paint spraying equipment main body, the paint spraying mechanism includes an adjustment mechanism and a spraying mechanism. The adjustment mechanism includes components such as a top plate, guide rods, a base, extension rods, and slider two, etc. It can drive the relative movement of the two groups of spraying mechanisms, adjust the distance between the two groups of spraying mechanisms, so as to adapt to marine hanging rudder arms of different sizes and thicknesses, and improve the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic production process diagram of the present invention.

[0013] Figure 2 It is a schematic structural diagram of the rudder arm body of the present invention.

[0014] Figure 3 It is a schematic structural diagram of the inner arm of the rudder arm body of the present invention.

[0015] Figure 4 It is a schematic structural diagram of the paint spraying equipment main body of the present invention.

[0016] Figure 5 This is a schematic structural diagram of the moving mechanism of the present invention.

[0017] Figure 6 This is a schematic structural diagram of the painting mechanism of the present invention.

[0018] Figure 7 This is a schematic structural diagram of the adjusting mechanism of the present invention.

[0019] Figure 8 This is a schematic structural diagram of the spraying mechanism of the present invention.

[0020] Figure 9 This is a schematic internal structure diagram of the telescopic arm of the present invention.

[0021] In the figure: rudder arm main body - 1, connecting plate - 2, through hole - 3, cavity - 4, reinforcing plate - 5, painting equipment main body - 6, strengthening skeleton - 11, inner paint one - 12, inner paint two - 13, outer paint one - 14, outer paint two - 15, support column - 61, moving mechanism - 62, painting mechanism - 63, driving motor one - 611, connecting frame - 621, extension arm - 622, driving motor two - 623, counterweight - 624, through slot - 625, screw one - 626, slider one - 627, winch - 628, adjusting mechanism - 631, spraying mechanism - 632, top plate - 6311, guide rod - 6312, base - 6313, extension rod - 6314, slider two - 6315, strengthening arm - 6316, slider three - 6317, driving motor three - 63131, screw two - 63132, combination box one - 63151, feed pipe - 63152, connecting frame - 63171, material conveying pipe - 6321, combination box two - 6322, nozzle - 6323, fixed shaft - 6324, telescopic arm - 6325, U - shaped frame - 6326, roller - 6327, movable cavity - 63251, telescopic member - 63252, spring - 63253. Detailed implementation manners

[0022] In order to further explain the technical solution of the present invention, it will be elaborated in detail through specific embodiments below.

[0023] Please refer to Figure 1 , the present invention provides a casting process for a marine hanging rudder arm, including the following steps: S1. Material preparation; S11. Prepare raw materials, including high - chromium molybdenum cast steel and titanium alloy. The mixture of the two can effectively improve the hardness and anti - buckling ability of the marine hanging rudder arm; S12. Prepare the mold for casting; S13. Preset a skeleton in the mold. The skeleton is honeycomb - shaped and can improve the strength of the marine hanging rudder arm; S14. Smelt the raw materials. During the smelting process, a deoxidizer needs to be added to improve the smelting effect; S2. Production casting; S21. Pour the smelted raw materials into the mold. Adopt the bottom-pouring or stepped gating method to avoid turbulence and slag inclusion. At the same time, control the rate ratio of molten steel to titanium alloy at 2:1 during pouring to ensure the interfacial gradient transition; S22. Slowly cool; S23. Demold; S24. Annealing / normalizing; S25. High-temperature tempering after quenching; S3. Post-treatment; S31. Grind and remove the burrs on the surface of the marine rudder arm; S32. Sandblast the surface of the marine rudder arm to make its surface smooth, which is beneficial to the subsequent painting operation; S33. Spray paint the marine rudder arm through the main body of the painting equipment; S34. Air-dry the marine rudder arm; S35. Place the marine rudder arm in a cool and dry place for storage.

[0024] A marine rudder arm, please refer to Figure 2 , at both the front upper and lower ends of the rudder arm body 1, a group of connecting plates 2 are welded. Through holes 3 that can be connected to the outside are provided in the middle of the two groups of connecting plates 2. A cavity 4 is opened at the inner end of the rudder arm body 1. A group of reinforcing plates 5 are connected in the middle of the cavity 4, which can support the rudder arm body 1 and improve its overall strength.

[0025] Specifically, the rudder arm body 1 can be connected to the outside through the connecting plate 2 and the through hole 3. The cavity 4 can reduce the self-weight of the rudder arm body 1, and the reinforcing plate 5 can maintain the strength of the rudder arm body 1.

[0026] Please refer to Figure 3, a reinforcing framework 11 is cast inside the inner wall of the rudder arm main body 1 to enhance the strength and buckling resistance of the rudder arm main body 1. An inner paint one 12 is sprayed on the inner side of the cavity 4. The inner paint one 12 is an epoxy coating with good corrosion resistance, high wear resistance, and strong adhesion, which is beneficial for the cooperation with other paint materials. An inner paint two 13 is sprayed on the inner side of the inner paint one 12. The inner paint two 13 is an inorganic zinc-rich primer with good protection and high heat resistance, which is suitable for areas inside the cavity that are difficult to maintain. An outer paint one 14 is sprayed on the outer side of the rudder arm main body 1. The outer paint one 14 is a modified epoxy resin coating with high adhesion, which can be closely combined with the outer side of the rudder arm main body 1 and has strong adhesion to complex welds and edge treatments. It is resistant to chemical corrosion and can effectively resist the erosion of seawater, acid rain, and weak acids and alkalis, extending the protection period. Further, when residues are mixed with a toughening agent during the spraying of the modified epoxy resin coating, its impact resistance can be improved, its flexibility can be enhanced, and the risk of mechanical damage can be reduced. An outer paint two 15 is sprayed on the outer side of the outer paint one 14. The outer paint two 15 is an epoxy asphalt anticorrosive coating with high water resistance and alkali resistance and good economy and low usage cost.

[0027] Specifically, the strength of the rudder arm main body 1 can be enhanced through the reinforcing framework 11 to improve its buckling resistance. The inner paint one 12 and the inner paint two 13 can protect the inner side of the cavity 4 to prevent the inner side of the cavity 4 from being affected by moisture and corroded. The outer paint one 14 and the outer paint two 15 can protect the outer side of the rudder arm main body 1 to prevent seawater from corroding the outer side of the rudder arm main body 1.

[0028] Please refer to Figure 4 , the main body 6 of the painting equipment includes a support column 61, a moving mechanism 62, and a painting mechanism 63. The top of the support column 61 is connected with the moving mechanism 62, and the painting mechanism 63 is arranged at the bottom rear end of the moving mechanism 62.

[0029] Specifically, the moving mechanism 62 is supported by the support column 61, and then the moving mechanism 62 drives the painting mechanism 63 to move to paint the inner and outer sides of the rudder arm main body 1.

[0030] Please refer to Figure 4 - Figure 5, the moving mechanism 62 includes a connecting frame 621, an extension arm 622, a second driving motor 623, a counterweight 624, a through groove 625, a first screw 626, a first slider 627 and a winch 628. A set of connecting frames 621 are rotatably connected to the top end of the support column 61. A set of extension arms 622 are fixedly connected to the inner ends of the connecting frames 621. A set of second driving motors 623 are installed in the part of the extension arm 622 located inside the connecting frame 621. The front end of the extension arm 622 extends to the front end of the connecting frame 621 and is equipped with a set of counterweights 624, which can counterweight the extension arm 622 to keep the balance of the extension arm 622. A set of through grooves 625 are formed in the rear middle part of the extension arm 622. A set of first screws 626 are rotatably connected in the through grooves 625, and the front end of the first screw 626 is connected to the rear end of the driving shaft of the second driving motor 623. The first screw 626 can be driven by the second driving motor 623 to rotate. A set of first sliders 627 are sleeved outside the first screw 626. Threaded holes corresponding to the first screw 626 are provided at the inner ends of the first sliders 627. The rotation of the first screw 626 can drive the first sliders 627 to move back and forth along the first screw 626. The bottom ends of the first sliders 627 are fixedly connected with a set of winches 628. The bottom ends of the winches 628 are connected to the painting mechanism 63 through ropes, and the painting mechanism 63 can be lifted or lowered by the winches 628 to adapt to the rudder arm body 1 with different height dimensions; Among them, a set of first driving motors 611 are installed at the inner top end of the support column 61. The top end of the driving shaft of the first driving motor 611 is connected to the bottom end of the connecting frame 621. The rotation of the driving shaft of the first driving motor 611 can drive the connecting frame 621 and the extension arm 622 to rotate.

[0031] Specifically, when the driving shaft of the first driving motor 611 rotates, it drives the connecting frame 621 and the extension arm 622 to rotate. At the same time, the second driving motor 623 drives the first screw 626 to rotate, so that the first slider 627 can drive the winch 628 and the painting mechanism 63 to move along the first screw 626 and can move around the top surface of the rudder arm body 1, which is beneficial to the spraying of the rudder arm body 1.

[0032] Please refer to Figure 6 - Figure 7 , the painting mechanism 63 includes an adjusting mechanism 631 and a spraying mechanism 632. The top end of the adjusting mechanism 631 is connected to the rope, and a set of spraying mechanisms 632 are provided at the left and right ends of the bottom surface.

[0033] Specifically, the distance between the left and right spraying mechanisms 632 can be adjusted through the adjusting mechanism 631 to adapt to the rudder arm body 1 with different sizes and thicknesses.

[0034] Please refer to Figure 6 - Figure 7, the adjusting mechanism 631 includes a top plate 6311, guide rods 6312, a base 6313, extension rods 6314, a second slider 6315, a strengthening arm 6316 and a third slider 6317. The top surface of the top plate 6311 is connected to the winch rope, and a set of guide rods 6312 are fixedly connected to the four ends of the bottom surface. The bottom ends of the four sets of guide rods 6312 are fixedly connected to the four ends of the top surface of a set of bases 6313. A set of extension rods 6314 are fixedly connected to the left and right ends of the base 6313. A set of second sliders 6315 are slidably connected to the outer sides of the two sets of extension rods 6314. A set of strengthening arms 6316 are fixedly connected to the ends of the two sets of extension rods 6314 away from each other. The other ends of the two sets of strengthening arms 6316 are respectively connected to the left and right ends of the top plate 6311. Among them, a third slider 6317 is provided between the top plate 6311 and the base 6313. The four sets of guide rods 6312 respectively penetrate the four ends of the third slider 6317. The third slider 6317 can move up and down along the four sets of guide rods 6312. A set of "H"-shaped connecting frames 63171 are rotatably connected to the left and right ends of the third slider 6317, and are connected to the two sets of second sliders 6315 through the two sets of connecting frames 63171.

[0035] Specifically, the top plate 6311, the base 6313, the two sets of extension rods 6314 and the two sets of strengthening arms 6316 can form a triangle to form a fixed frame. The third slider 6317 can move up and down along the four sets of guide rods 6312, and drive the two sets of second sliders 6315 to move relatively along the two sets of extension rods 6314 through the two sets of connecting frames 63171.

[0036] Please refer to Figure 7 , a third driving motor 63131 is installed in the middle of the base 6313. The output end of the third driving motor 63131 is fixedly connected to a second screw rod 63132. The top end of the second screw rod 63132 sequentially penetrates the middle of the top of the base 6313 and the middle of the third slider 6317, and is rotatably connected to the middle of the bottom of the top plate 6311. A threaded hole corresponding to the second screw rod 63132 is opened in the middle of the third slider 6317. When the second screw rod 63132 rotates, it can drive the third slider 6317 to move up and down along the four sets of guide rods 6312 and the second screw rod 63132.

[0037] Specifically, the third driving motor 63131 can drive the second screw rod 63132 to rotate, thereby driving the third slider 6317 to move up and down along the four sets of guide rods 6312 and the second screw rod 63132, facilitating the relative movement of the two sets of second sliders 6315 along the two sets of extension rods 6314.

[0038] Please refer to Figure 6 - Figure 7, a set of combination boxes one 63151 are fixedly connected to the bottom ends of the two sets of sliders two 6315, and are connected to the material conveying pipe 6321 through the combination boxes one 63151. Moreover, a set of feeding pipes 63152 are fixedly connected to the mutually remote sides of the two sets of combination boxes one 63151. One end of the feeding pipe 63152 that is mutually remote can be connected to external paint, and the other end can be communicated with the material conveying pipe 6321, so as to input the paint into the material conveying pipe 6321.

[0039] Specifically, by connecting the two sets of feeding pipes 63152 to different external paints and inputting the paints into the material conveying pipe 6321, spraying of different paints on the inner and outer sides of the rudder arm main body 1 can be realized.

[0040] Please refer to Figure 7 - Figure 8 , the components of the two sets of spraying mechanisms 632 are the same. The spraying mechanism 632 includes a material conveying pipe 6321, a combination box two 6322, a nozzle 6323, a fixed shaft 6324, a telescopic arm 6325, a U-shaped frame 6326 and a roller 6327. The top end of the material conveying pipe 6321 is connected to the feeding pipe 63152 through the combination box one 63151. A C-shaped combination box two 6322 is installed at the bottom end. A set of nozzles 6323 are installed at the bottom ends of the opposite faces of the two sets of combination boxes two 6322. The nozzle 6323 can be communicated with the material conveying pipe 6321 to spray the paint in the material conveying pipe 6321. Moreover, a set of fixed shafts 6324 are installed at the mutually remote ends of the two sets of combination boxes two 6322. A set of telescopic arms 6325 are installed at the upper and lower ends of the fixed shaft 6324 respectively. Among them, torsion springs are provided at the installation positions of the fixed shaft 6324 and the two sets of telescopic arms 6325. The torsion springs can drive the two sets of telescopic arms 6325 to rotate relatively and approach each other. The nozzle 6323 is located between the two sets of telescopic arms 6325. The orientations of the two sets of telescopic arms 6325 are opposite. A set of rollers 6327 are sleeved and connected to the mutually remote ends through the U-shaped frame 6326. The roller 6327 can rotate around one end of the U-shaped frame 6326, and its outer side can contact the rudder arm main body 1.

[0041] Specifically, the nozzle 6323 is communicated with the material conveying pipe 6321 to spray the paint in the material conveying pipe 6321. Moreover, the combination box two 6322 contacts the rudder arm main body 1 through the two sets of telescopic arms 6325 and the rollers 6327. The position of the nozzle 6323 can be limited by the rolling of the rollers 6327 on the inner and outer sides of the rudder arm main body 1, so as to improve the stability of the movement of the nozzle 6323 and ensure the accuracy and precision during spraying.

[0042] Please refer to Figure 9, an inner end of each telescopic arm 6325 is provided with a movable cavity 63251, a set of telescopic members 63252 are slidably connected in the movable cavity 63251, one ends of the telescopic members 63252 all penetrate through the inner side of the movable cavity 63251 and extend to the outer end of the telescopic arm 6325, and the other sides in the movable cavity 63251 are all fixedly connected with the other ends of the telescopic members 63252 through springs 63253.

[0043] Specifically, when the roller 6327 rolls on the inner and outer sides of the rudder arm main body 1, with the change of the shape of the rudder arm main body 1, the spring 63253 can be compressed to retract the telescopic member 63252, or the elastic force of the spring 63253 can be released to push the telescopic member 63252 outwards, so that the roller 6327 can always be in contact with the rudder arm main body 1.

[0044] The present invention provides a marine hanging rudder arm and its casting process. Through steps S1, material preparation; S2, production casting; S3, post-treatment, etc., the production casting of the marine hanging rudder arm is realized, which can effectively improve the overall strength of the marine hanging rudder arm, avoid the difficulty of balancing the strength and toughness of the marine hanging rudder arm caused by a single raw material, and effectively improve the service life of the marine hanging rudder arm; through the painting equipment main body 6 in step S33, the painting equipment main body 6 includes components such as a support column 61, a moving mechanism 62 and a painting mechanism 63, etc., which can paint the inner and outer surfaces of the marine hanging rudder arm at the same time, effectively improve the work efficiency, reduce the labor cost, and can be applicable to marine hanging rudder arms of different sizes and heights, effectively expanding the applicable range; through the painting mechanism 63 arranged in the painting equipment main body 6, the painting mechanism 63 includes an adjusting mechanism 631 and a spraying mechanism 632, the adjusting mechanism 631 includes components such as a top plate 6311, a guide rod 6312, a base 6313, an extension rod 6314 and a slider two 6315, etc., which can drive two sets of spraying mechanisms 632 to move relatively, adjust the distance between the two sets of spraying mechanisms 632 to adapt to marine hanging rudder arms of different sizes and thicknesses, and improve the use flexibility.

[0045] The above are only the preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A casting process for a marine rudder stock, characterized in that, It includes the following steps: S1. Material preparation; S11. Prepare raw materials; S12. Prepare the mold for casting; S13. Preset the skeleton in the mold; S14. Smelt the raw materials; S2. Production casting; S21. Pour the smelted raw materials into the mold; S22. Slowly cool; S23. Demold; S24. Annealing / Normalizing; S25. High-temperature tempering after quenching; S3. Post-treatment; S31. Grind and remove the burrs on the surface of the marine rudder arm; S32. Sandblast the surface of the marine rudder arm; S33. Spray paint the marine rudder arm through the main body of the painting equipment; S34. Air-dry the marine rudder arm; S35. Store the marine rudder arm in a cool and dry place.

2. The casting process of a marine rudder stock according to claim 1, characterized in that: In step S14, when smelting the raw materials, a deoxidizer needs to be added.

3. The casting process of a marine rudder carrier according to claim 1, characterized in that: In step S13, the skeleton is honeycomb-shaped.

4. The casting process of a marine rudder carrier according to claim 1, characterized in that: In step S21, the bottom-pouring or stepped pouring method is adopted.

5. The marine rudder carrier according to claim 1, characterized in that: Both the upper and lower ends of the front of the rudder arm main body (1) are connected with a group of connecting plates (2), through holes (3) are provided in the middle of the two groups of connecting plates (2), a cavity (4) is provided at the inner end of the rudder arm main body (1), and a group of reinforcing plates (5) are connected in the middle of the cavity (4).

6. The marine rudder carrier according to claim 5, wherein: The inner wall of the rudder arm main body (1) is provided with a strengthening skeleton (11), an inner paint one (12) is provided inside the cavity (4), an inner paint two (13) is provided inside the inner paint one (12), an outer paint one (14) is provided outside the rudder arm main body (1), and an outer paint two (15) is provided outside the outer paint one (14).

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