An eccentric rudder stock connection structure and its installation method

Abstract

This application relates to the field of ship propulsion devices, and particularly to an eccentric rudder stock connection structure and its installation method. The eccentric rudder stock connection structure includes an eccentric rudder stock body, a rudder blade installed at one end of the eccentric rudder stock body, and a rudder post that supports the rudder blade. There is an installation shaft between the rudder blade and the rudder post. There are multiple installation blocks on one side of the rudder post, and an installation groove for the installation blocks to be embedded is provided on one side of the rudder blade. An installation hole for the installation shaft to be inserted is provided through the rudder blade and the installation blocks. The installation hole includes a first hole on the rudder blade and a second hole on the installation blocks. The installation shaft includes a connecting bolt located between adjacent two installation blocks and a force-applying bolt located below the installation blocks. There is a fixing nut on the rudder blade that is connected to the connecting bolt. One end of the connecting bolt is fixedly connected with a connecting nut that is connected to the force-applying bolt. Both the connecting bolt and the force-applying bolt are inserted through the second hole. This application can achieve the effect of reducing the disassembly of the eccentric rudder stock body when replacing the rudder blade and lowering the replacement cost.

Description

Technical Field

[0001] The present application relates to the field of ship propulsion devices, and in particular, to an eccentric rudder stock connection structure and an installation method thereof. Background Art

[0002] The current marine rudder system mainly includes a rudder blade, a rudder stock connected to the rudder blade, and a rudder bearing installed on the hull for supporting the rudder stock. One end of the rudder stock far from the rudder blade passes upward through the rudder bearing and is provided with a tiller. By operating the tiller to rotate, the rudder blade is driven to rotate through the rudder stock, so as to adjust the direction of the hull. For small ships, this design has been relatively mature and widely used in practice. However, for large ships, due to the large weight of the rudder blade, the traditional single rudder stock is difficult to provide sufficient supporting force, so the design of an eccentric rudder stock appears.

[0003] Refer to Figure 1 , which is a schematic structural diagram of an eccentric rudder stock. The eccentric rudder stock includes a straight rod 11 and an arc rod 12 integrally formed at one end of the straight rod 11. The rudder blade 2 is connected to the hull through a rudder post 3 to support the rudder blade 2 through the rudder post 3. One end of the arc rod 12 far from the straight rod 11 is connected to the rudder blade 2 for driving the rudder blade 2 to rotate, and the axis of the straight rod 11 coincides with the rotation axis of the rudder blade 2. This design not only realizes the effective support for the rudder blade 2, but also ensures that the rudder blade 2 rotates around its rotation axis, so as to achieve precise direction control. The development of these technologies has significantly improved the maneuverability and safety of large ships.

[0004] However, due to the coaxiality requirement between the rudder blade and the straight rod, the distance between the connecting shaft between the rudder blade and the rudder post and the straight rod is relatively close. Therefore, when installing the eccentric rudder stock, since the connecting shaft between the rudder blade and the rudder post coincides with the axis of the straight rod, it is often necessary to first install the rudder blade on the rudder post, and then install the straight rod of the rudder stock on the hull from bottom to top, and install a sleeve between the hull and the rudder stock. The sleeve is sleeved on the straight rod from the hull. If the rudder blade needs to be replaced due to a collision in the future, the entire rudder stock needs to be removed before the rudder blade can be removed and replaced, and the maintenance workload is very large, greatly increasing the maintenance and replacement costs. Summary of the Invention

[0005] In order to facilitate the replacement of the rudder blade, reduce the disassembly of the rudder stock, and reduce the replacement cost, the present application provides an eccentric rudder stock connection structure and an installation method thereof.

[0006] In a first aspect, the present application provides an eccentric rudder stock connection structure, adopting the following technical solution:

[0007] An eccentric rudder stock connection structure comprises an eccentric rudder stock body for being mounted on a hull, a rudder blade mounted at one end of the eccentric rudder stock body, and a rudder post mounted on the hull for supporting the rudder blade, a mounting shaft is arranged between the rudder blade and the rudder post, a plurality of mounting blocks are fixedly connected at intervals on one side of the rudder post, a mounting groove for the mounting block to be embedded is provided on one side of the rudder blade, a mounting hole for the mounting shaft to be inserted is provided through the rudder blade and the mounting block, the mounting hole comprises a first hole provided on the rudder blade and a second hole provided on the mounting block; the mounting shaft comprises a connecting bolt located in the first hole and between two adjacent mounting blocks, and a force bolt located in the first hole and at the lower side of the mounting block, a fixing nut for being threadedly connected with the connecting bolt is placed on the rudder blade, and a connecting nut for being threadedly connected with the force bolt is fixedly connected to one end of the connecting bolt facing the force bolt; when the connecting bolt is operated to be screwed on the fixing nut and the force bolt is screwed on the connecting nut, the connecting bolt and the force bolt are both inserted into the second hole.

[0008] By adopting the above technical solution, the eccentric rudder stock connection structure can effectively improve the connection stability between the rudder blade and the rudder post, and at the same time simplify the installation and replacement process of the rudder blade. Specifically: the rudder blade and the rudder post are fixed at multiple points (that is, multiple mounting blocks are embedded in the mounting groove), and the double locking mechanism of the connecting bolts and the force bolts is used to ensure that the rudder blade will not loosen or fall off when subjected to force, thereby improving the reliability of the overall system. The rudder blade can be installed on the rudder post by a simple sliding method, without the need for complicated alignment and adjustment, reducing the difficulty of installation. At the same time, when the rudder blade needs to be replaced, the rudder blade can be easily removed by removing the fixing nut and the force bolt, reducing the need to disassemble the rudder stock and greatly reducing the maintenance cost and time. Moreover, the connecting bolt and the force bolt are normally located in the mounting hole, so that during installation, only an external tool is needed to drive the force bolt to slide, and one of the mounting blocks can be fixed by the force bolt, and the force bolt also drives the connecting bolt to slide, so that the connecting bolt can fix the other mounting block. Since the force bolt and the connecting bolt are normally located in the mounting hole on the rudder blade, it is not necessary to occupy too much external space during installation, so that when the rudder blade is installed and disassembled, it will not interfere with the eccentric rudder stock body. The rudder blade can be replaced separately without disassembling the eccentric rudder stock body, which is convenient for replacing the rudder blade and greatly reduces the replacement cost.

[0009] Optionally, a first fixing ring for fixing the position of the connecting bolt in the first hole is installed in the first hole, and the first fixing ring is sleeved on the connecting nut.

[0010] By adopting the above technical solution, the first fixing ring can fix the position of the connecting bolt in the first hole, preventing the connecting bolt from slipping out of the first hole under the action of gravity.

[0011] Optionally, a limiting ring for restricting the position of the force-applying bolt in the first hole is threadedly connected in the first hole.

[0012] By adopting the above technical solution, the limiting ring can fix the position of the force-applying bolt in the first hole, preventing the force-applying bolt from falling out of the first hole under the action of gravity.

[0013] Optionally, an installation cylinder is installed in the first hole located on the lower side of the installation block. The force-applying bolt is slidably connected in the installation cylinder. The limiting ring is threadedly connected in the installation cylinder. The installation cylinder and the first hole are in interference fit.

[0014] By adopting the above technical solution, the setting of the installation cylinder enables, when the rudder blade is collided and deformed and it is impossible to operate the limiting ring to rotate in the installation cylinder, to hammer the connecting bolt with a hard hammer, so that the connecting bolt applies force to the limiting ring through the force-applying bolt, and thus drives the installation cylinder to slide out of the first hole through the limiting ring, realizing violent demolition in special cases and ensuring the smooth disassembly of the rudder blade.

[0015] Optionally, an anti-detachment component for preventing the fixing nut from detaching from the connecting bolt is arranged between the fixing nut and the rudder blade.

[0016] By adopting the above technical solution, the setting of the anti-detachment component can form a stable locking structure between the fixing nut and the rudder blade, avoiding the risk of the fixing nut loosening or even falling off due to external impact or vibration, thereby improving the stability and reliability of the entire eccentric rudder rod connection structure. At the same time, this design also simplifies the installation process, reduces the workload of maintenance and replacement, and reduces the maintenance cost.

[0017] Optionally, an embedding groove for installing the anti-detachment component is provided on the rudder blade. The anti-detachment component includes a spring backing plate located in the embedding groove, a fixing plate inserted on the spring backing plate, and an anti-detachment bolt threadedly connected to the fixing plate. An anti-detachment hole for the anti-detachment bolt to pass through is provided on the fixing nut.

[0018] By adopting the above technical solution, the design of the embedding groove enables the anti-detachment component to be firmly installed inside the rudder blade, avoiding the influence of the external environment on it; the spring backing plate can absorb vibration to a certain extent, further enhancing the position stability of the fixing nut; the anti-detachment bolt cooperates with the anti-detachment hole on the fixing nut to ensure that the fixing nut will not easily loosen or fall off, thereby ensuring the safety of the entire rudder blade connection structure.

[0019] Optionally, a plug board is fixedly connected to one side of the fixed plate. A slot for inserting the plug board is formed on the spring backing plate. Convex ribs are fixedly connected to the opposite sides of the plug board respectively, and grooves for embedding the convex ribs are formed on the opposite sides of the slot respectively.

[0020] By adopting the above technical solution, the cooperation between the plug board and the slot can effectively prevent the fixed plate from shifting when subjected to external forces. At the same time, the embedding design of the convex ribs and the grooves further enhances the fixing stability, avoiding loosening caused by vibration or impact, so as to ensure that the anti-disengagement component functions stably for a long time, and improves the safety and reliability of the rudder blade replacement process.

[0021] Optionally, the eccentric rudder stock body is installed on the hull through a sleeve. A sealing component is arranged between the eccentric rudder stock body and the inner wall of the sleeve. A sealing groove for installing the sealing component is formed on the inner wall of the sleeve. The sealing component includes a first sealing ring, a second sealing ring and a third sealing ring which are installed in the sealing groove and arranged at intervals from bottom to top along the length direction of the sealing groove. A buffer area is formed between the first sealing ring and the second sealing ring in the sealing groove. A squeezing area is formed between the second sealing ring and the third sealing ring in the sealing groove. A pressurizing area is formed between the third sealing ring and the end of the sealing groove in the sealing groove. The pressurizing area squeezes the buffer area through the squeezing area to prevent the liquid in the buffer area from flowing into the squeezing area.

[0022] By adopting the above technical solution, the sealing performance of the eccentric rudder stock connection structure can be effectively improved. Specifically: by arranging the first sealing ring, the second sealing ring and the third sealing ring in the sealing groove, a multi-level sealing structure is formed, which can effectively block external liquid from entering the interior, improving the waterproofness and reliability of the system. A buffer area and a squeezing area are arranged in the sealing groove. When the external pressure increases, the pressurizing area can further compress the buffer area through the squeezing area, enhancing the sealing effect and preventing liquid leakage. The pressurizing area applies pressure to the buffer area through the squeezing area, which can effectively prevent a small amount of liquid that may exist in the buffer area from flowing into the squeezing area, thus avoiding the risk of liquid leakage from the sealing component.

[0023] Optionally, the eccentric rudder stock body includes a straight rod for installing on the hull, an arc rod integrally and fixedly connected to the lower end of the straight rod, and an auxiliary plate integrally and fixedly connected to the end of the arc rod far away from the straight rod. An auxiliary groove for the auxiliary plate to slide into is formed on one side of the rudder blade.

[0024] By adopting the above technical solution, the integrated design of the straight rod and the arc rod of the eccentric rudder stock body enhances the overall strength and stability of the rudder stock, and avoids the problem that the traditional segmented rudder stock affects the rudder effect due to the easy loosening of the connection part. At the same time, the auxiliary groove design between the auxiliary plate and the rudder blade enables the rudder blade to be quickly positioned during the installation process, and the auxiliary plate can provide a pulling force to the rudder blade, providing an installation support force to the rudder blade, making the installation more labor-saving and greatly improving the installation efficiency.

[0025] In a second aspect, the present application provides an installation method for an eccentric rudder stock, adopting the following technical solution:

[0026] An installation method for an eccentric rudder stock, used for installing the above-mentioned eccentric rudder stock connection structure, includes the following steps:

[0027] Install the eccentric rudder stock body on the hull through a sleeve;

[0028] Operate the rudder blade to slide towards the rudder post, so that the auxiliary plate slides into the auxiliary groove, and at this time the installation block also fits into the installation groove;

[0029] Apply force to the force-applying bolt from below, so that the force-applying bolt drives the connecting bolt to slide in the installation hole until the end of the connecting bolt extends out of the installation hole, and screw the fixing nut onto the end of the connecting bolt extending out of the installation hole;

[0030] Operate the force-applying bolt to rotate, so that the force-applying bolt is screwed onto the connecting nut;

[0031] Operate the limit ring to rotate in the installation cylinder, so that the limit ring abuts against the force-applying bolt;

[0032] Install the anti-detachment component on the fixing nut to fix the relative position between the fixing nut and the rudder blade;

[0033] Connect the auxiliary plate and the rudder blade through bolts.

[0034] By adopting the above technical solutions, the installation method of the eccentric rudder stock can effectively solve the problem that the entire rudder stock needs to be disassembled during the replacement of the traditional rudder blade. It allows the replacement of the rudder blade without removing the entire eccentric rudder stock body. Only need to operate the rudder blade to slide towards the rudder post, so that the auxiliary plate slides into the auxiliary groove, and then insert an external tool from below into the installation hole to drive the force application bolt and the connection bolt to slide, which does not occupy too much external space. At the same time, the installation block is embedded in the installation groove, thus significantly reducing the replacement time. The connection between the rudder blade and the rudder post is achieved through the coordinated action of multiple components (such as connection bolts, force application bolts, fixing nuts, limit rings, etc.) in the installation hole, ensuring the precise positioning between the rudder blade and the rudder post, improving the installation accuracy, and occupying less external space, so that there will be no interference with the external eccentric rudder stock body during the installation and disassembly of the rudder blade, reducing the replacement cost. And the sealing component set between the eccentric rudder stock body and the sleeve, through the design of multi-stage sealing rings and buffer zones, extrusion zones, and pressurization zones, effectively prevents water from entering the hull interior and extends the service life of the equipment.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] By setting the installation block and the installation groove, as well as the combination of the connection bolt and the force application bolt, the rapid disassembly and assembly between the rudder blade and the rudder post are realized, greatly reducing the workload during the replacement of the rudder blade and reducing the maintenance cost;

[0037] The dual locking mechanism of the locking component and the limit ring enables the upper and lower ends of the installation shaft to be fixed and locked respectively, ensuring the firm installation of the rudder blade and the overall reliability and safety of the rudder system;

[0038] The setting of the auxiliary plate and the auxiliary groove enables the rudder blade to be preliminarily supported by the auxiliary plate when positioning the rudder blade, greatly improving the convenience of installation. Description of the Drawings

[0039] Figure 1 is a schematic diagram showing the existing eccentric rudder stock structure.

[0040] Figure 2 is a schematic diagram of the overall structure of the present application.

[0041] Figure 3 is a schematic diagram of the main view cutaway of the present application.

[0042] Figure 4 is Figure 3 an enlarged schematic diagram of part A in

[0043] Figure 5 is a schematic diagram showing the structure of the installation wrench.

[0044] Figure 6 It is a schematic diagram showing the structure of the limit ring.

[0045] Figure 7 It is a schematic diagram showing the structure of the anti - detachment component.

[0046] Figure 8 It is Figure 3 An enlarged schematic diagram of position B in

[0047] Explanation of reference numerals: 1, eccentric rudder stock body; 11, straight rod; 12, arc rod; 13, auxiliary plate; 131, kidney - shaped groove; 2, rudder blade; 21, installation groove; 22, embedding groove; 23, auxiliary groove; 24, bearing; 3, rudder post; 31, installation block; 4, installation shaft; 41, connecting bolt; 42, applying force bolt; 421, applying force groove; 43, fixing nut; 431, anti - detachment hole; 44, connecting nut; 5, installation hole; 51, first hole; 52, second hole; 53, first fixing ring; 54, second fixing ring; 55, limit ring; 551, driving groove; 552, accommodating groove; 56, installation cylinder; 6, anti - detachment component; 61, spring backing plate; 611, slot; 612, groove; 62, fixing plate; 621, inserting plate; 622, convex rib; 63, anti - detachment bolt; 7, installation wrench; 71, installation rod; 711, sliding groove; 712, first limit groove; 713, second limit groove; 72, screwing head; 73, handle; 74, driving ring; 741, driving block; 742, sliding block; 8, sleeve; 81, sealing groove; 9, sealing component; 91, first sealing ring; 92, second sealing ring; 93, third sealing ring; 94, buffer zone; 95, extrusion zone; 96, pressurizing zone; 97, pressurizing pipeline. Detailed implementation manners

[0048] The following further elaborates on this application in conjunction with the attached Figures 2 - 8 drawings for a more detailed description.

[0049] The embodiment of this application discloses an eccentric rudder stock connection structure. Refer to Figure 2 and Figure 3, the eccentric rudder stock connection structure includes an eccentric rudder stock body 1 for installation on the hull, a rudder blade 2 installed at one end of the eccentric rudder stock body 1, and a rudder post 3 installed on the hull for supporting the rudder blade 2. An installation shaft 4 is provided between the rudder blade 2 and the rudder post 3. At the same time, a plurality of installation blocks 31 are fixedly connected at intervals on one side of the rudder post 3. In this application, it is described by taking two installation blocks 31 arranged at intervals as an example. At the same time, an installation groove 21 for the installation blocks 31 to be embedded is provided on one side of the rudder blade 2, and an installation hole 5 for the installation shaft 4 to be inserted is provided through the rudder blade 2 and the installation blocks 31. By embedding the installation blocks 31 into the installation groove 21 and installing the installation shaft 4 in the installation hole 5, the rudder blade 2 and the installation blocks 31 can be connected together through the installation shaft 4, thereby fixing the position of the rudder blade 2 on the rudder post 3 to support the rudder blade 2 through the hull.

[0050] Refer to Figure 3 and Figure 4, the mounting hole 5 includes a first hole 51 formed in the rudder blade 2 and a second hole 52 formed in the mounting block 31. The mounting shaft 4 includes a connecting bolt 41 slidably connected in the first hole 51 and located between the two mounting blocks 31, and a force-applying bolt 42 located in the first hole 51 and below the mounting block 31. At the same time, a fixing nut 43 for threadedly connecting with the connecting bolt 41 is placed on the rudder blade 2, and a connecting nut 44 for threadedly connecting with the force-applying bolt 42 is fixedly connected to one end of the connecting bolt 41 facing the force-applying bolt 42. Under normal conditions, the connecting bolt 41 is located in the first hole 51 between the two mounting blocks 31, and the force-applying bolt 42 is located in the first hole 51 below the mounting block 31, which will not prevent the mounting block 31 from being inserted into the mounting groove 21. After the mounting block 31 is inserted into the mounting groove 21, directly with the help of an external tool, insert the external tool into the first hole 51 from below the first hole 51. At this time, the external tool can drive the force-applying bolt 42 to pass through the second hole 52 in one of the mounting blocks 31 below and abut against the connecting nut 44. At this time, continue to apply force to the external tool to push the force-applying bolt 42, which can drive the connecting bolt 41 to pass through the second hole 52 in one of the mounting blocks 31 above and pass through one of the first holes 51 above the second hole 52. At this time, directly screw the external fixing nut 43 onto the connecting bolt 41. At the same time, the external tool can also be used to drive the force-applying bolt 42 to rotate, so that the force-applying bolt 42 is screwed onto the connecting nut 44. At this time, the position of the mounting block 31 on the rudder blade 2 can be fixed by the force-applying bolt 42 and the connecting bolt 41 together, and the installation of the rudder blade 2 is completed. Because during the installation of the rudder blade 2, both the connecting bolt 41 and the force-applying bolt 42 are located in the mounting hole 5, the upper end of the mounting shaft 4 will not interfere with the eccentric rudder stock body 1 during installation, and the distance between the lower side of the rudder blade 2 and the bottom of the hull is also sufficient for the installation tool to be inserted into the first hole 51, which will not affect the installation of the mounting shaft 4 and does not require too much external space, making the installation more convenient. It can be understood that a straight or cross-shaped force-applying groove 421 for cooperating with the external tool is formed on the bolt head of the force-applying bolt 42. In this application, the force-applying groove 421 is taken as an example of a straight shape for illustration.

[0051] Refer to Figure 3 and Figure 4, in order to fix the position of the connecting bolt 41 in the first hole 51, a first fixing ring 53 and a second fixing ring 54 for fixing the position of the connecting bolt 41 in the first hole 51 are arranged in the first hole 51 between the two mounting blocks 31. The first fixing ring 53 and the second fixing ring 54 are arranged at intervals along the axial direction of the first hole 51, wherein the first fixing ring 53 is located below the second fixing ring 54. The bolt rod of the connecting bolt 41 passes through the second fixing ring 54, and the connecting nut 44 passes through the first fixing ring 53. Under normal conditions, under the action of gravity, the bolt head of the connecting bolt 41 abuts against one side of the first fixing ring 53 facing the second fixing ring 54 to fix the position of the connecting bolt 41. When the applying bolt 42 drives the connecting bolt 41 to slide in the first hole 51, when the bolt head of the connecting bolt 41 slides to abut against the second fixing ring 54, the end of the bolt rod of the connecting bolt 41 also extends out of the rudder blade 2 to be connected with the fixing nut 43.

[0052] At the same time, in order to fix the position of the applying bolt 42 in the first hole 51, a limiting ring 55 for restricting the position of the applying bolt 42 in the first hole 51 is arranged in the first hole 51 below the mounting block 31. And an installation cylinder 56 is installed in one of the first holes 51 below the mounting block 31. The installation cylinder 56 is in interference fit with the first hole 51. The applying bolt 42 is slidably connected in the installation cylinder 56, and the limiting ring 55 is threadedly connected in the installation cylinder 56. When the position of the connecting bolt 41 is fixed by the fixing nut 43 and the applying bolt 42 is screwed onto the connecting nut 44, the limiting ring 55 can be driven to rotate in the installation cylinder 56 by an external tool, so as to adjust the position of the limiting ring 55 in the installation cylinder 56 until the limiting ring 55 abuts against the bolt head of the applying bolt 42, thereby fixing the positions of the applying bolt 42 and the connecting bolt 41 on the rudder blade 2 and completing the connection of the rudder blade 2. When the applying bolt 42 needs to be operated, the external tool can also pass through the limiting ring 55 to screw the applying bolt 42.

[0053] When the rudder blade 2 needs to be disassembled, only need to operate the limiting ring 55 to rotate in the installation cylinder 56 to release the fixation of the applying bolt 42, then the applying bolt 42 can be removed from the connecting nut 44 by an external tool, and at the same time, the fixing nut 43 can be removed from the connecting bolt 41 to complete the disassembly of the rudder blade 2.

[0054] The installation cylinder 56 is provided such that when the hull undergoes an accidental collision, causing the rudder blade 2 to be deformed by force and making it impossible to disassemble the limit ring 55, the staff can remove the fixing nut 43 from the connecting bolt 41. At this time, by hammering the connecting bolt 41 with a hard force, the force - applying bolt 42 can drive the installation cylinder 56 to slide relative to the rudder blade 2 through the fixing ring, so as to remove the force - applying bolt 42 and achieve the violent disassembly of the rudder blade 2. This can avoid the increase in replacement cost caused by the inability to disassemble the rudder blade 2 after it is deformed.

[0055] Refer to Figure 5 and Figure 6 As shown in FIGS. and, an installation wrench 7 for driving the limit ring 55 and the force - applying bolt 42 to rotate includes an installation rod 71, a screwing head 72 fixedly connected to one end of the installation rod 71 for driving the force - applying bolt 42 to rotate, and a handle 73 fixedly connected to the other end of the installation rod 71. The screwing head 72 is used to insert into the force - applying groove 421 of the force - applying bolt 42 to drive the force - applying bolt 42 to rotate. During use, the staff can directly hold the handle 73 and insert the screwing head 72 into the force - applying groove 421, and then drive the installation rod 71 to rotate through the handle 73, so as to drive the screwing head 72 to screw the force - applying bolt 42, realizing the installation and disassembly of the force - applying bolt 42.

[0056] Meanwhile, the installation wrench 7 further includes a driving ring 74 slidably connected to the installation rod 71 for driving the limit ring 55 to rotate. Driving blocks 741 are fixedly connected to the outer walls on the opposite sides of the driving ring 74. At the same time, a driving groove 551 for the driving blocks 741 to be embedded is formed on the side of the limit ring 55 away from the force - applying bolt 42. Through the cooperation of the driving blocks 741 and the driving groove 551, the rotation of the limit ring 55 can be realized.

[0057] Among them, in order to avoid interference between the driving blocks 741 and the limit ring 55 when the screwing head 72 drives the force - applying bolt 42 to rotate, a slider 742 is fixedly connected to the inner wall of the driving ring 74, and a sliding groove 711 for the slider 742 to be embedded and slide is formed on the outer wall of the installation rod 71. When it is necessary to install and disassemble the force - applying bolt 42 through the screwing head 72, the slider 742 can be operated to slide in the sliding groove 711. At this time, the driving ring 74 also slides along the length direction of the installation rod 71, ensuring the smooth docking of the screwing head 72 and the force - applying bolt 42.

[0058] Meanwhile, in order to prevent the slider 742 from sliding in the chute 711 and affecting the screwing of the limit ring 55 during the process of driving the limit ring 55 by the driving ring 74. A first limit groove 712 is provided on one side of the chute 711, and a second limit groove 713 is provided on the other side of the chute 711. Both the first limit groove 712 and the second limit groove 713 communicate with one end of the chute 711 close to the screwing head 72. When screwing the limit ring 55 through the driving ring 74, the slider 742 is directly slid into the first limit groove 712, and the position of the driving ring 74 on the mounting rod 71 can be fixed. At this time, the limit ring 55 can be driven to rotate in the mounting cylinder 56 through the driving block 741, realizing the adjustment of the position of the limit ring 55. When it is necessary to reverse the rotation of the limit ring 55, only need to operate the slider 742 to be embedded in the second limit groove 713, and the position of the slider 742 in the second limit groove 713 can be fixed, facilitating the reverse rotation of the limit ring 55.

[0059] Among them, in order to facilitate the driving block 741 to smoothly embed into the driving groove 551, a receiving groove 552 for the driving ring 74 to embed is also provided on the limit ring 55. When the installation wrench 7 is operated to approach the limit ring 55, the driving ring 74 can be embedded into the receiving groove 552. At this time, the driving block 741 also embeds into the driving groove 551 to smoothly drive the limit ring 55 to rotate.

[0060] It can be understood that the distance between the screwing head 72 and the chute 711 is less than the thickness of the limit ring 55, so that when the driving ring 74 drives the limit ring 55 to rotate until the limit ring 55 abuts against the applying bolt 42, the screwing head 72 is also located inside the limit ring 55, and the screwing head 72 will not interfere with the applying bolt 42.

[0061] Refer to Figure 7 and Figure 8 As shown in [relevant figure numbers], an anti - detachment component 6 for fixing the fixing nut 43 to prevent loosening is also provided between the rudder blade 2 and the fixing nut 43 to prevent the fixing nut 43 from detaching from the connecting bolt 41 under the vibration during the ship's travel, resulting in unstable fixing of the rudder blade 2.

[0062] Specifically, an embedding groove 22 for installing the anti - detachment component 6 is provided on the rudder blade 2. The anti - detachment component 6 includes a spring backing plate 61 located in the embedding groove 22, a fixing plate 62 inserted on the spring backing plate 61, and an anti - detachment bolt 63 threadedly connected to the fixing plate 62. At the same time, an anti - detachment hole 431 for the anti - detachment bolt 63 to pass through is provided on the fixing nut 43.

[0063] In use, directly place the spring backing plate 61 into the embedding groove 22, and enable the connecting bolt 41 to pass through the spring backing plate 61. Then screw the fixing nut 43 onto the connecting bolt 41. Next, insert the fixing plate 62 onto the spring backing plate 61 so that the fixing plate 62 abuts against one side of the fixing nut 43. Finally, pass the anti-loosening bolt 63 through the fixing nut 43 and finally screw it onto the fixing plate 62. The position of the fixing nut 43 can be fixed by the fixing plate 62 to prevent the fixing nut 43 from rotating.

[0064] Wherein, a plug plate 621 is fixedly connected to one side of the fixing plate 62, and a slot 611 for inserting the plug plate 621 is formed on the spring backing plate 61. Through the cooperation of the plug plate 621 and the slot 611, the plug-in fit between the fixing plate 62 and the spring backing plate 61 is realized. At the same time, in order to fix the position of the plug plate 621 in the slot 611, convex ribs 622 are fixedly connected to the opposite sides of the plug plate 621 respectively, and grooves 612 for embedding the convex ribs 622 are formed on the opposite sides of the slot 611 respectively. Through the cooperation of the convex ribs 622 and the grooves 612, the position of the plug plate 621 in the slot 611 can be fixed. When it is necessary to pull out the plug plate 621, directly apply force to the fixing plate 62, and the plug plate 621 can be pulled out of the slot 611 by hard force.

[0065] Refer to Figure 3 , the eccentric rudder stock body 1 includes a straight rod 11 for installing on the hull, an arc rod 12 integrally and fixedly connected to the lower end of the straight rod 11, and an auxiliary plate 13 integrally and fixedly connected to one end of the arc rod 12 away from the straight rod 11. The surface of the auxiliary plate 13 facing the arc rod 12 is perpendicular to the axis of the straight rod 11. At the same time, an auxiliary groove 23 for the auxiliary plate 13 to slide into is formed on the side of the rudder blade 2 facing the rudder post 3. When installing the rudder blade 2, directly slide the rudder blade 2 horizontally to the rudder post 3 so that the auxiliary plate 13 slides into the auxiliary groove 23. At this time, the installation block 31 also embeds into the corresponding installation groove 21. The eccentric rudder stock body 1 can play a role in pulling and initially fixing the rudder blade 2, which is more convenient for connecting the rudder blade 2 and the rudder post 3.

[0066] Refer to Figure 7 , the auxiliary plate 13 and the rudder blade 2 are connected by auxiliary bolts, and a waist-shaped groove 131 for the auxiliary bolts to pass through is formed on the auxiliary plate 13, so as to adapt to the error generated between the rudder blade 2 and the eccentric rudder stock body 1.

[0067] Moreover, to ensure that when the eccentric rudder stock body 1 drives the rudder blade 2 to rotate around the axis of the mounting shaft 4, the rudder blade 2 can rotate smoothly, a bearing 24 is also provided between the mounting block 31 and the inner wall of the mounting groove 21. The inner ring of the bearing 24 is sleeved on the mounting shaft 4, and the outer ring of the bearing 24 is fixedly connected to the mounting block 31. This ensures that while the mounting shaft 4 and the mounting block 31 can rotate relative to each other smoothly, it can also seal between the mounting block 31 and the inner wall of the mounting groove 21, preventing external waterweeds, etc. from winding around the mounting shaft 4 between the mounting block 31 and the inner wall of the mounting groove 21 and affecting the normal rotation of the rudder blade 2.

[0068] Referring to Figure 3 , a sleeve 8 for fixing the position of the straight rod 11 on the hull is also provided between the straight rod 11 and the hull. The straight rod 11 is fixed to the hull through the sleeve 8, and a sealing assembly 9 is provided between the straight rod 11 and the sleeve 8 to reduce the seawater in the sea from reaching the hull through between the straight rod 11 and the sleeve 8.

[0069] Specifically, a sealing groove 81 for installing the sealing assembly 9 is provided on the inner wall of the sleeve 8. The sealing assembly 9 includes a first sealing ring 91, a second sealing ring 92, and a third sealing ring 93 that are installed in the sealing groove 81 and are spaced from bottom to top along the length of the sealing groove 81. Among them, the part between the first sealing ring 91 and the second sealing ring 92 is called a buffer zone 94, the part between the second sealing ring 92 and the third sealing ring 93 is called a squeezing zone 95, and the part between the third sealing ring 93 and the end of the sealing groove 81 is called a pressurizing zone 96. And a pressurizing pipeline 97 connected to the pressurizing zone 96 to inject sealing oil into the pressurizing zone 96 to increase the pressure of the pressurizing zone 96 is provided. One end of the pressurizing pipeline 97 is communicated with the pressurizing zone 96, and the other end of the pressurizing pipeline 97 is connected to an oil tank through a water pump. Under normal conditions, the first sealing ring 91 seals between the straight rod 11 and the sleeve 8. When water reaches the buffer zone 94 from the first sealing ring 91, the excessive pressure in the pressurizing zone 96 will flow to the squeezing zone 95, increasing the pressure in the squeezing zone 95, thereby giving an impulse to the buffer zone 94 to prevent the water in the buffer zone 94 from reaching the squeezing zone 95, and realizing the sealing between the straight rod 11 and the sleeve 8 through high pressure.

[0070] The embodiment of the present application also discloses an eccentric rudder stock installation method. The eccentric rudder stock installation method includes the following steps:

[0071] S1, installing the eccentric rudder stock body 1 on the hull through the sleeve 8;

[0072] S2, operating the rudder blade 2 to slide towards the rudder post 3, so that the auxiliary plate 13 slides into the auxiliary groove 23. At this time, the mounting block 31 also fits into the mounting groove 21; the auxiliary plate 13 can hold the rudder blade 2, maintaining the support strength of the rudder blade 2 while also being able to operate the rudder blade 2 to slide towards the rudder post 3 to adjust the alignment of the axes of the first hole 51 and the second hole 52.

[0073] S3. With the aid of the installation wrench 7, insert the installation wrench 7 into the installation hole 5 so that the installation wrench 7 abuts against the application bolt 42 and slides upward. At this time, the application bolt 42 also passes through the second hole 52 in the lower mounting block 31 and reaches the first hole 51 where the connecting bolt 41 is located. As the installation wrench 7 drives the application bolt 42 to continue sliding, the application bolt 42 also drives the connecting bolt 41 to slide in the installation hole 5, so that the connecting bolt 41 passes through the second hole 52 in the upper mounting block 31 and exits from the first hole 51 on the upper side of the mounting block 31 until the connecting bolt 41 abuts against the second fixing ring 54. At this time, directly place the spring backing plate 61 in the embedding groove 22, and screw the fixing nut 43 onto the end of the connecting bolt 41, thereby fixing the position of the installation bolt and realizing the fixation of the rudder blade 2.

[0074] S4. With the aid of the installation wrench 7, drive the application bolt 42 to rotate so that the application bolt 42 is screwed onto the connecting nut 44, thereby fixing the position of the application bolt 42 in the installation hole 5.

[0075] S5. Drive the limiting ring 55 to rotate in the installation cylinder 56 through the installation wrench 7 so that the limiting ring 55 abuts against the application bolt 42 to fix the position of the application bolt 42.

[0076] S6. Insert the fixing plate 62 on the spring backing plate 61 so that the fixing plate 62 fits against one side of the fixing nut 43, and then install the anti-loosening bolt 63 on the fixing nut 43 and the fixing plate 62 to prevent the fixing nut 43 from loosening, thereby fixing the relative position between the fixing nut 43 and the rudder blade 2.

[0077] S7. Fix the relative position between the auxiliary plate 13 and the rudder blade 2 by bolts to realize the connection between the auxiliary plate 13 and the rudder blade 2.

[0078] The implementation principle of an eccentric rudder stock installation method in an embodiment of the present application is as follows: When the rudder blade 2 is damaged and needs to be replaced, the installation wrench 7 can be directly driven to rotate the limit ring 55 in the reverse direction to release the mating relationship with the force application bolt 42, and then the anti-detachment component 6 is removed, and the fixing nut 43 is unscrewed to release the fixing relationship with the connecting bolt 41. At this time, under the action of gravity, the connecting bolt 41 releases the fixation of the upper mounting block 31, so that the connecting bolt 41 abuts against the first fixing ring 53. Then, the installation wrench 7 is used to drive the force application bolt 42 to rotate, so that the force application bolt 42 is unscrewed from the connecting nut 44, and the force application bolt 42 can release the fixation of the lower mounting block 31 under the action of gravity and abut against the limit ring 55. Finally, the bolts fixing the auxiliary plate 13 and the rudder blade 2 are removed, and the rudder blade 2 is operated to slide laterally away from the rudder post 3, so that the connection relationship with the rudder blade 2 can be released. It is possible to install and disassemble the rudder blade 2 separately without disassembling the eccentric rudder stock body 1, which is more convenient for replacement, greatly reducing the complexity and cost of replacement.

[0079] It can be understood that the first fixing ring 53 and the second fixing ring 54 have the same structure as the limit ring 55, so that after the rudder blade 2 is disassembled, the connecting bolt 41 and the force application bolt 42 can be disassembled by the installation wrench 7, or the connecting bolt 41 and the force application bolt 42 can be installed onto a new rudder blade 2 by the installation wrench 7, and both installation and disassembly are very convenient.

[0080] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An eccentric rudder stock connection structure, characterized in that: The invention relates to a rudder stock body (1) for being mounted on a hull, a rudder blade (2) mounted on one end of the eccentric rudder stock body (1), and a rudder post (3) mounted on the hull for supporting the rudder blade (2); a mounting shaft (4) is arranged between the rudder blade (2) and the rudder post (3); a plurality of mounting blocks (31) are fixedly connected to one side of the rudder post (3) at intervals; a mounting groove (21) for embedding the mounting blocks (31) is provided on one side of the rudder blade (2); a mounting hole (5) for inserting the mounting shaft (4) is provided through the rudder blade (2) and the mounting block (31); the mounting hole (5) comprises a first hole (51) provided on the rudder blade (2) and a second hole (52) provided on the mounting block (31); the mounting shaft (4) includes a plurality of mounting blocks (31) and a plurality of mounting blocks (31) provided on one side of the rudder blade (2); The invention comprises a connecting bolt (41) located in the first hole (51) and between two adjacent mounting blocks (31) and a force bolt (42) located in the first hole (51) and at the lower side of the mounting block (31); a fixing nut (43) for threaded connection with the connecting bolt (41) is placed on the rudder blade (2); a connecting nut (44) for threaded connection with the force bolt (42) is fixedly connected to one end of the connecting bolt (41) facing the force bolt (42); when the connecting bolt (41) is screwed on the fixing nut (43) and the force bolt (42) is screwed on the connecting nut (44), the connecting bolt (41) and the force bolt (42) are both inserted into the second hole (52); The eccentric rudder stock body (1) comprises a straight rod (11) for mounting on a hull, an arc-shaped rod (12) integrally fixed to the lower end of the straight rod (11), and an auxiliary plate (13) integrally fixed to an end of the arc-shaped rod (12) away from the straight rod (11); an auxiliary groove (23) for the auxiliary plate (13) to slide into is provided on one side of the rudder blade (2).

2. The eccentric rudder stock connection structure according to claim 1, characterized in that: A first fixing ring (53) for fixing the position of the connecting bolt (41) in the first hole (51) is installed in the first hole (51), and the first fixing ring (53) is sleeved on the connecting nut (44).

3. The eccentric rudder stock connection structure according to claim 1, characterized in that: The first hole (51) is internally threadedly connected to a limiting ring (55) for limiting the position of the force bolt (42) in the first hole (51).

4. The eccentric rudder stock connection structure according to claim 3, characterized in that: A mounting tube (56) is installed in the first hole (51) located at the lower side of the mounting block (31), the force bolt (42) is slidably connected in the mounting tube (56), the limiting ring (55) is threadedly connected in the mounting tube (56), and the mounting tube (56) and the first hole (51) are interference fit.

5. The eccentric rudder stock connection structure according to claim 1, characterized in that: An anti-detachment component (6) for preventing the fixing nut (43) from detaching from the connecting bolt (41) is provided between the fixing nut (43) and the rudder blade (2).

6. The eccentric rudder stock connection structure according to claim 5, characterized in that: The rudder blade (2) is provided with an embedding groove (22) for installing the anti-detachment component (6), the anti-detachment component (6) comprises a spring pad (61) located in the embedding groove (22), a fixing plate (62) inserted on the spring pad (61), and an anti-detachment bolt (63) threadedly connected to the fixing plate (62), and the fixing nut (43) is provided with an anti-detachment hole (431) for the anti-detachment bolt (63) to pass through.

7. The eccentric rudder stock connection structure according to claim 6, characterized in that: A plug plate (621) is fixedly connected to one side of the fixing plate (62); a slot (611) is provided on the spring pad (61) for the plug plate (621) to be inserted; convex ridges (622) are fixedly connected to the two opposite sides of the plug plate (621); and grooves (612) are provided on the two opposite sides of the slot (611) for the convex ridges (622) to be embedded.

8. The eccentric rudder stock connection structure according to claim 1, characterized in that: The eccentric rudder stock body (1) is mounted on the hull via a sleeve (8); a sealing assembly (9) is arranged between the eccentric rudder stock body (1) and the inner wall of the sleeve (8); a sealing groove (81) for mounting the sealing assembly (9) is provided on the inner wall of the sleeve (8); the sealing assembly (9) comprises a first sealing ring (91), a second sealing ring (92) and a third sealing ring (93) which are installed in the sealing groove (81) and are arranged at intervals from bottom to top along the length direction of the sealing groove (81); the sealing groove (81) is provided in the inner wall of the sleeve (8) and the sealing groove (81) is provided with a sealing groove (81) and a sealing groove (81) and a sealing groove (81) and a sealing groove (81) which are provided in the inner wall of the sleeve (8) and the sealing groove (81) and the sealing groove (81) are provided with a sealing groove (81) and a sealing groove (81) which is ... A buffer zone (94) is formed between the first sealing ring (91) and the second sealing ring (92); an extrusion zone (95) is formed in the sealing groove (81) between the second sealing ring (92) and the third sealing ring (93); a pressurization zone (96) is formed in the sealing groove (81) between the third sealing ring (93) and the end of the sealing groove (81); the pressurization zone (96) squeezes the buffer zone (94) through the extrusion zone (95) to prevent the liquid in the buffer zone (94) from flowing toward the extrusion zone (95).

9. A method for installing an eccentric rudder stock, characterized in that: The method for installing the eccentric rudder stock connection structure according to any one of claims 1 to 8 comprises the following steps: The eccentric rudder stock body (1) is mounted on the hull through a sleeve (8); The rudder blade (2) is operated to slide toward the rudder post (3), so that the auxiliary plate (13) slides into the auxiliary groove (23), and at this time, the mounting block (31) is also embedded in the mounting groove (21); Apply force to the force bolt (42) from below, so that the force bolt (42) drives the connecting bolt (41) to slide in the mounting hole (5) until the end of the connecting bolt (41) protrudes from the mounting hole (5), and screw the fixing nut (43) on the end of the connecting bolt (41) protruding from the mounting hole (5); The force-applying bolt (42) is operated to rotate so that the force-applying bolt (42) is screwed onto the connecting nut (44); The limiting ring (55) is operated to rotate in the installation tube (56) so that the limiting ring (55) abuts against the force bolt (42); Installing the anti-drop assembly (6) on the fixing nut (43) to fix the relative position between the fixing nut (43) and the rudder blade (2); The auxiliary plate (13) is connected to the rudder blade (2) by bolts.

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