Eccentric rudderstock connecting structure and mounting method thereof

Abstract

The invention relates to the field of ship propelling devices, in particular to an eccentric rudderstock connecting structure and a mounting method thereof.The eccentric rudderstock connecting structure comprises an eccentric rudderstock body, a rudder blade mounted at one end of the eccentric rudderstock body and a rudder column supporting the rudder blade, a mounting shaft is arranged between the rudder blade and the rudder column, and a plurality of mounting blocks are arranged on one side of the rudder column; a mounting groove allowing the mounting block to be embedded is formed in one side of the rudder blade, a mounting hole allowing the mounting shaft to be inserted is formed in the rudder blade and the mounting block in a penetrating mode, and the mounting hole comprises a first hole in the rudder blade and a second hole in the mounting block; each installation shaft comprises a connecting bolt located between every two adjacent installation blocks and a force application bolt located on the lower side of the corresponding installation block, the rudder blade is provided with a fixing nut connected with the connecting bolt, one end of each connecting bolt is fixedly connected with a connecting nut connected with the corresponding force application bolt, and the connecting bolts and the force application bolts are arranged in the second holes in a penetrating mode. According to the rudder blade replacement device, the effects of reducing disassembly of the eccentric rudderstock body when the rudder blade is replaced and reducing the replacement cost can be achieved.

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 to support the rudder stock. A tiller is provided on the end of the rudder stock away from the rudder blade and passes through the rudder bearing upward. By operating the tiller to rotate, the rudder blade is driven to rotate through the rudder stock to adjust the direction of the hull. For small ships, this design is relatively mature and widely used in practice. However, on large ships, due to the heavy weight of the rudder blade, the traditional single rudder stock is difficult to provide sufficient support force, so the design of an eccentric rudder stock has emerged.

[0003] Reference Figure 1 , is a schematic diagram of the structure of an eccentric rudder stock, which 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 the rudder post 3 to support the rudder blade 2 through the rudder post 3. The end of the arc rod 12 away from the straight rod 11 is connected to the rudder blade 2 to drive 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 effective support for the rudder blade 2, but also ensures that the rudder blade 2 rotates around its rotation axis, thereby achieving precise direction control. The development of these technologies has significantly improved the control performance and safety of large ships.

[0004] However, due to the coaxiality requirement of the rudder blade and the straight rod, the distance between the connecting axis 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 axis between the rudder blade and the rudder post coincides with the axis of the straight rod, the rudder blade needs to be installed on the rudder post first, and then the straight rod of the rudder stock is installed on the hull from bottom to top, and a sleeve is installed between the hull and the rudder stock, and the sleeve is sleeved on the straight rod from the hull. If the rudder blade needs to be replaced in the future due to a collision, the entire rudder stock needs to be removed before the rudder blade is removed and replaced, which requires a lot of maintenance work and greatly increases the maintenance and replacement costs. Summary of the invention

[0005] In order to facilitate the replacement of rudder blades, 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, which adopts the following technical solution: 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.

[0007] 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.

[0008] 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.

[0009] By adopting the above technical solution, the position of the connecting bolt in the first hole can be fixed by the first fixing ring, so as to prevent the connecting bolt from sliding out of the first hole under the action of gravity.

[0010] Optionally, a limiting ring for limiting the position of the force bolt in the first hole is threadedly connected to the first hole.

[0011] By adopting the above technical solution, the position of the force bolt in the first hole can be fixed by the limiting ring, so as to prevent the force bolt from falling out of the first hole under the action of gravity.

[0012] Optionally, a mounting tube is installed in the first hole located at the lower side of the mounting block, the force bolt is slidably connected in the mounting tube, the limit ring is threadedly connected in the mounting tube, and the mounting tube and the first hole are interference fit.

[0013] By adopting the above technical solution, the installation tube is arranged so that when the rudder blade collides and deforms and the limiting ring cannot be operated to rotate in the installation tube, the connecting bolt can be hammered with hard force, so that the connecting bolt applies force to the limiting ring through the force bolt, thereby driving the installation tube to slide out of the first hole through the limiting ring, thereby realizing violent dismantling under special circumstances and ensuring the smooth disassembly of the rudder blade.

[0014] Optionally, an anti-detachment component is provided between the fixing nut and the rudder blade for preventing the fixing nut from detaching from the connecting bolt.

[0015] By adopting the above technical solution, the setting of the anti-drop assembly 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 stock connection structure. At the same time, the design also simplifies the installation process, reduces the workload of repair and replacement, and reduces maintenance costs.

[0016] Optionally, an embedding groove for installing the anti-dropping component is provided on the rudder blade, and the anti-dropping component includes a spring pad located in the embedding groove, a fixing plate inserted on the spring pad, and an anti-dropping bolt threadedly connected to the fixing plate, and an anti-dropping hole for the anti-dropping bolt to pass through is provided on the fixing nut.

[0017] By adopting the above technical solution, the design of the embedded groove allows the anti-drop assembly to be firmly installed inside the rudder blade to avoid being affected by the external environment; the spring pad can absorb vibration to a certain extent, further enhancing the position stability of the fixing nut; the anti-drop bolt cooperates with the anti-drop hole on the fixing nut to ensure that the fixing nut will not loosen or fall off easily, thereby ensuring the safety of the entire rudder blade connection structure.

[0018] Optionally, an insert plate is fixedly connected to one side of the fixed plate, a slot for inserting the insert plate is formed on the spring pad, ridges are fixedly connected to opposite sides of the insert plate, and grooves for embedding the ridges are formed on opposite sides of the slot.

[0019] By adopting the above technical solution, the cooperation between the plug plate and the slot can effectively prevent the fixing plate from shifting when subjected to external force. At the same time, the embedded design of the ridges and grooves further enhances the stability of the fixation and avoids loosening due to vibration or impact, thereby ensuring that the anti-detachment component can function stably and long-term, thereby improving the safety and reliability of the rudder blade replacement process.

[0020] Optionally, the eccentric rudder stock body is installed on the hull through a sleeve, and a sealing assembly is arranged between the eccentric rudder stock body and the inner wall of the sleeve, and a sealing groove for installing the sealing assembly is opened on the inner wall of the sleeve, and the sealing assembly includes a first sealing ring, a second sealing ring and a third sealing ring installed in the sealing groove and spaced from bottom to top along the length direction of the sealing groove, a buffer zone is formed in the sealing groove between the first sealing ring and the second sealing ring, an extrusion zone is formed in the sealing groove between the second sealing ring and the third sealing ring, and a pressurization zone is formed in the sealing groove between the third sealing ring and the end of the sealing groove, and the pressurization zone squeezes the buffer zone through the extrusion zone to prevent the liquid in the buffer zone from flowing to the extrusion zone.

[0021] 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 prevent external liquid from entering the interior, thereby improving the waterproofness and reliability of the system. A buffer zone and an extrusion zone are set in the sealing groove. When the external pressure increases, the boost zone can further compress the buffer zone through the extrusion zone, thereby enhancing the sealing effect and preventing liquid leakage. The boost zone applies pressure to the buffer zone through the extrusion zone, which can effectively prevent a small amount of liquid that may exist in the buffer zone from flowing to the extrusion zone, thereby avoiding the risk of liquid leakage from the sealing assembly.

[0022] Optionally, the eccentric rudder bar body includes a straight rod for installation on the hull, an arc rod integrally fixed to the lower end of the straight rod, and an auxiliary plate integrally fixed to the end of the arc rod away from the straight rod, and an auxiliary groove for the auxiliary plate to slide into is opened on one side of the rudder blade.

[0023] By adopting the above technical solution, the straight rod and the arc rod of the eccentric rudder stock body are integrated into one design, which enhances the overall strength and stability of the rudder stock and avoids the problem of the traditional segmented rudder stock affecting the rudder effect due to the loose connection. 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 and provide an installation support force to the rudder blade, making the installation more labor-saving and greatly improving the installation efficiency.

[0024] In a second aspect, the present application provides an eccentric rudder stock installation method, which adopts the following technical solution: A method for installing an eccentric rudder stock is used to install the above-mentioned eccentric rudder stock connection structure, comprising the following steps: The eccentric rudder stock body is installed on the hull through the sleeve; Operate the rudder blade to slide toward the rudder post, so that the auxiliary plate slides into the auxiliary groove, and the mounting block is also embedded in the mounting groove; Apply force to the force bolt from below, so that the force bolt drives the connecting bolt to slide in the mounting hole until the end of the connecting bolt protrudes from the mounting hole, and screw the fixing nut on the end of the connecting bolt protruding from the mounting hole; Operate the force bolt to rotate so that the force bolt is screwed onto the connecting nut; The operating limit ring rotates in the installation tube so that the limit ring abuts against the force bolt; Install the anti-drop assembly on the fixing nut to fix the relative position between the fixing nut and the rudder blade; The auxiliary plate is connected to the rudder blade by bolts.

[0025] By adopting the above technical solution, the eccentric rudder stock installation method can effectively solve the problem that the entire rudder stock needs to be disassembled during the traditional rudder blade replacement process. It can allow the replacement of the rudder blade without removing the entire eccentric rudder stock body. It only needs to operate the rudder blade to slide toward the rudder post, so that the auxiliary plate slides into the auxiliary groove, and then insert the external tool into the installation hole from the bottom to drive the force bolt and the connecting bolt to slide, without occupying too much external space. At the same time, the installation block is embedded in the installation groove, thereby significantly reducing the replacement time. The connection between the rudder blade and the rudder post is achieved through the synergistic effect of multiple components (such as connecting bolts, force 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 the installation and removal of the rudder blade will not interfere with the external eccentric rudder stock body, reducing the replacement cost. The sealing assembly set between the eccentric rudder stock body and the sleeve effectively prevents water from entering the hull through the design of multi-stage sealing rings and buffer zones, extrusion zones, and pressurization zones, thereby extending the service life of the equipment.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: By setting the mounting block and mounting groove, as well as the combination of connecting bolts and force bolts, the rudder blade and the rudder post can be quickly disassembled and assembled, which greatly reduces the workload of replacing the rudder blade and reduces the maintenance cost; The double locking mechanism of the locking assembly and the limit ring allows the upper and lower ends of the installation shaft to be fixed and locked respectively, ensuring the firmness of the installation of the rudder blade and the overall reliability and safety of the rudder system; The provision of the auxiliary plate and the auxiliary groove enables the auxiliary plate to provide preliminary support to the rudder blade when the rudder blade is positioned, which greatly improves the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram made to reflect the existing eccentric rudder stock structure.

[0028] Figure 2 It is a schematic diagram of the overall structure of this application.

[0029] Figure 3 It is a main cutaway schematic diagram of the present application.

[0030] Figure 4 yes Figure 3 A magnified schematic diagram of center A.

[0031] Figure 5 This is a schematic diagram to illustrate the installation structure of the wrench.

[0032] Figure 6 This is a schematic diagram to illustrate the limit ring structure.

[0033] Figure 7 This is a schematic diagram designed to illustrate the structure of the anti-slip component.

[0034] Figure 8 yes Figure 3 A magnified schematic diagram of point B in the middle.

[0035] Explanation of the reference numerals: 1. eccentric rudder stock body; 11. straight rod; 12. arc rod; 13. auxiliary plate; 131. waist-shaped groove; 2. rudder blade; 21. mounting groove; 22. embedded groove; 23. auxiliary groove; 24. bearing; 3. rudder post; 31. mounting block; 4. mounting shaft; 41. connecting bolt; 42. force bolt; 421. force groove; 43. fixing nut; 431. anti-drop hole; 44. connecting nut; 5. mounting hole; 51. first hole; 52. second hole; 53. first fixing ring; 54. second fixing ring; 55. limiting ring; 551. driving groove; 552. containing groove; 56. mounting tube ;6. Anti-slip assembly;61. Spring pad;611. Slot;612. Groove;62. Fixing plate;621. Insert plate;622. Protruding ridge;63. Anti-slip bolt;7. Mounting wrench;71. Mounting rod;711. Slide groove;712. First limiting groove;713. Second limiting groove;72. Screwing head;73. Handle;74. Driving ring;741. Driving block;742. Sliding block;8. Sleeve;81. Sealing groove;9. Sealing assembly;91. First sealing ring;92. Second sealing ring;93. Third sealing ring;94. Buffer zone;95. Extrusion zone;96. Pressurization zone;97. Pressurization pipeline. DETAILED DESCRIPTION

[0036] The following is combined with Figure 2-Figure 8 This application is described in further detail.

[0037] The embodiment of the present application discloses an eccentric rudder stock connection structure. 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. A mounting shaft 4 is provided between the rudder blade 2 and the rudder post 3. At the same time, a plurality of mounting blocks 31 are fixedly connected at intervals on one side of the rudder post 3. The present application takes two mounting blocks 31 arranged at intervals as an example for explanation. At the same time, a mounting groove 21 for embedding the mounting block 31 is provided on one side of the rudder blade 2, and a mounting hole 5 for inserting the mounting shaft 4 is provided through the rudder blade 2 and the mounting block 31. By embedding the mounting block 31 into the mounting groove 21 and installing the mounting shaft 4 into the mounting hole 5, the rudder blade 2 and the mounting block 31 can be connected together through the mounting shaft 4, thereby fixing the position of the rudder blade 2 on the rudder post 3, so as to support the rudder blade 2 through the hull.

[0038] Reference Figure 3 and Figure 4The mounting hole 5 includes a first hole 51 formed on the rudder blade 2 and a second hole 52 formed on 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 bolt 42 located in the first hole 51 and located at the lower side of the mounting block 31. At the same time, a fixing nut 43 for threaded connection with the connecting bolt 41 is placed on the rudder blade 2, and 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. Under normal conditions, the connecting bolt 41 is located in the first hole 51 between the two mounting blocks 31, and the force bolt 42 is located in the first hole 51 below the mounting block 31, which will not hinder the mounting block 31 from being embedded in the mounting groove 21. After the mounting block 31 is embedded in the mounting groove 21, the external tool is directly inserted into the first hole 51 from below the first hole 51 with the help of an external tool. At this time, the external tool can drive the force bolt 42 to pass through the second hole 52 on the mounting block 31 located below and abut against the connecting nut 44. At this time, the external tool continues to apply force to push the force bolt 42, which can drive the connecting bolt 41 to pass through the second hole 52 on the mounting block 31 located above and pass through the first hole 51 located above the second hole 52. At this time, the external fixing nut 43 can be directly screwed on the connecting bolt 41. At the same time, the force bolt 42 can be driven to rotate by the external tool so that the force bolt 42 is screwed on 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 bolt 42 and the connecting bolt 41, and the installation of the rudder blade 2 is completed. Because the connecting bolt 41 and the force bolt 42 are both located in the installation hole 5 during the installation of the rudder blade 2, the upper end of the installation 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 sufficient for the installation tool to be inserted into the first hole 51, which will not affect the installation of the installation shaft 4, and does not need to occupy too much external space, making the installation more convenient and quick. It is understandable that the bolt head of the force bolt 42 is provided with a straight or cross-shaped force groove 421 that cooperates with external tools. This application takes the straight-shaped force groove 421 as an example for explanation.

[0039] Reference Figure 3 and Figure 4In 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 provided 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 is inserted into the second fixing ring 54, and the connecting nut 44 is inserted into the first fixing ring 53. Under normal conditions, under the action of gravity, the bolt head of the connecting bolt 41 abuts against the side of the first fixing ring 53 facing the second fixing ring 54 to fix the position of the connecting bolt 41. When the force 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 bolt rod end of the connecting bolt 41 also extends out of the rudder blade 2 and is connected to the fixing nut 43.

[0040] At the same time, in order to fix the position of the force bolt 42 in the first hole 51, a limiting ring 55 for limiting the position of the force bolt 42 in the first hole 51 is provided in the first hole 51 located below the mounting block 31, and a mounting tube 56 is installed in a first hole 51 located below the mounting block 31, the mounting tube 56 is interference fit with the first hole 51, the force bolt 42 is slidably connected in the mounting tube 56, and the limiting ring 55 is threadedly connected in the mounting tube 56. When the position of the connecting bolt 41 is fixed by the fixing nut 43 and the force bolt 42 is screwed on the connecting nut 44, the limiting ring 55 can be driven by an external tool to rotate in the mounting tube 56, and the position of the limiting ring 55 in the mounting tube 56 can be adjusted until the limiting ring 55 abuts against the bolt head of the force bolt 42, thereby fixing the positions of the force bolt 42 and the connecting bolt 41 on the rudder blade 2, and completing the connection of the rudder blade 2. When the force bolt 42 needs to be operated, an external tool can also pass through the limiting ring 55 to screw the force bolt 42 .

[0041] When the rudder blade 2 needs to be disassembled, it is only necessary to operate the limit ring 55 to rotate in the installation tube 56 to release the fixation of the force bolt 42, and then the force bolt 42 can be removed from the connecting nut 44 by external tools, and the fixing nut 43 can be removed from the connecting bolt 41 to complete the disassembly of the rudder blade 2.

[0042] The installation tube 56 is provided so that when the rudder blade 2 is deformed by force due to an accidental collision of the hull and the limit ring 55 cannot be disassembled, the staff can remove the fixing nut 43 from the connecting bolt 41, and then hit the connecting bolt 41 with a hard hammer, so that the force bolt 42 can drive the installation tube 56 to slide relative to the rudder blade 2 through the fixing ring, so as to remove the force bolt 42 and realize the violent disassembly of the rudder blade 2. This avoids the situation that the rudder blade 2 cannot be disassembled after being deformed, which leads to an increase in replacement cost.

[0043] Reference Figure 5 and Figure 6 , is a mounting wrench 7 for driving the limiting ring 55 and the force bolt 42 to rotate, comprising a mounting rod 71, a screwing head 72 fixed to one end of the mounting rod 71 for driving the force bolt 42 to rotate, and a handle 73 fixed to the other end of the mounting rod 71, wherein the screwing head 72 is used to be inserted into the force groove 421 of the force bolt 42 to drive the force bolt 42 to rotate. When in use, the staff can directly hold the handle 73 to insert the screwing head 72 into the force groove 421, and then drive the mounting rod 71 to rotate through the handle 73, so as to drive the screwing head 72 to screw the force bolt 42, so as to install and remove the force bolt 42.

[0044] At the same time, the installation wrench 7 also includes a driving ring 74 slidably connected to the installation rod 71 for driving the limit ring 55 to rotate, and driving blocks 741 are fixedly connected to the outer walls on both sides of the driving ring 74. At the same time, a driving groove 551 for the driving block 741 to be embedded is provided on the side of the limit ring 55 away from the force bolt 42. The limit ring 55 can be driven to rotate through the cooperation between the driving block 741 and the driving groove 551.

[0045] In order to prevent the driving block 741 from interfering with the limiting ring 55 when the screwing head 72 drives the force bolt 42 to rotate, a slider 742 is fixedly connected to the inner wall of the driving ring 74, and a slide groove 711 is provided on the outer wall of the mounting rod 71 for the slider 742 to be inserted and slide. When the force bolt 42 needs to be installed or removed by the screwing head 72, the slider 742 can be operated to slide in the slide groove 711, and the driving ring 74 also slides along the length direction of the mounting rod 71, so as to ensure the smooth docking of the screwing head 72 and the force bolt 42.

[0046] At the same time, in order to prevent the slider 742 from sliding in the slide groove 711 and affecting the screwing of the limit ring 55 during the process of driving the limit ring 55 through the driving ring 74, a first limit groove 712 is provided on one side of the slide groove 711, and a second limit groove 713 is provided on the other side of the slide groove 711. The first limit groove 712 and the second limit groove 713 are both connected to one end of the slide groove 711 close to the screwing head 72, so that when the limit ring 55 is screwed through the driving ring 74, the slider 742 is directly slid into the first limit groove 712 to fix the position of the driving ring 74 on the mounting rod 71. At this time, the limit ring 55 can be driven to rotate in the mounting cylinder 56 through the driving block 741 to adjust the position of the limit ring 55. When the limit ring 55 needs to be rotated in the reverse direction, it is only necessary to operate the slider 742 to be embedded in the second limit groove 713 to fix the position of the slider 742 in the second limit groove 713, so as to drive the limit ring 55 to rotate in the reverse direction.

[0047] In order to facilitate the smooth embedding of the driving block 741 into the driving groove 551, a receiving groove 552 for the driving ring 74 to be embedded is also provided on the limiting ring 55, so that when the operating installation wrench 7 approaches the limiting ring 55, the driving ring 74 can be embedded in the receiving groove 552. At this time, the driving block 741 is also embedded in the driving groove 551 to smoothly drive the limiting ring 55 to rotate.

[0048] It can be understood that the distance between the screwing head 72 and the slide groove 711 is smaller than the thickness of the limiting ring 55, so that when the driving ring 74 drives the limiting ring 55 to rotate so that the limiting ring 55 abuts against the force bolt 42, the screwing head 72 is also located in the limiting ring 55, and the screwing head 72 will not interfere with the force bolt 42.

[0049] Reference Figure 7 and Figure 8 An anti-loosening component 6 is also provided between the rudder blade 2 and the fixing nut 43 to prevent the fixing nut 43 from being detached from the connecting bolt 41 due to the vibration of the hull during the movement of the ship, thereby causing unstable fixation of the rudder blade 2.

[0050] Specifically, an embedding groove 22 for installing an anti-dropping component 6 is provided on the rudder blade 2. The anti-dropping component 6 includes a spring pad 61 located in the embedding groove 22, a fixing plate 62 inserted on the spring pad 61, and an anti-dropping bolt 63 threadedly connected to the fixing plate 62. At the same time, an anti-dropping hole 431 for the anti-dropping bolt 63 to pass through is provided on the fixing nut 43.

[0051] When in use, the spring washer 61 is directly placed into the embedding groove 22, and the connecting bolt 41 is passed through the spring washer 61, and the fixing nut 43 is screwed on the connecting bolt 41. Then the fixing plate 62 is inserted on the spring washer 61, so that the fixing plate 62 abuts against one side of the fixing nut 43, and finally the anti-drop bolt 63 is passed through the fixing nut 43 and finally screwed on the fixing plate 62. The fixing plate 62 can fix the position of the fixing nut 43 to prevent the fixing nut 43 from rotating.

[0052] Among them, a plug-in plate 621 is fixedly connected to one side of the fixed plate 62, and a slot 611 for inserting the plug-in plate 621 is provided on the spring pad 61. The plug-in cooperation between the plug-in plate 621 and the slot 611 is realized. At the same time, in order to fix the position of the plug-in plate 621 in the slot 611, convex ridges 622 are fixedly connected to the opposite sides of the plug-in plate 621, and grooves 612 for the convex ridges 622 to be embedded are provided on the opposite sides of the slot 611. The position of the plug-in plate 621 in the slot 611 can be fixed by the cooperation between the convex ridges 622 and the grooves 612. When the plug-in plate 621 needs to be pulled out, force is directly applied to the fixed plate 62, and the plug-in plate 621 can be pulled out from the slot 611 by hard force.

[0053] Reference Figure 3 The eccentric rudder stock body 1 comprises a straight rod 11 for installation on the hull, a curved rod 12 integrally fixed to the lower end of the straight rod 11, and an auxiliary plate 13 integrally fixed to the end of the curved rod 12 away from the straight rod 11. The side of the auxiliary plate 13 facing the curved 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 provided on the side of the rudder blade 2 facing the rudder post 3. When installing the rudder blade 2, the rudder blade 2 is directly slid horizontally to the rudder post 3, so that the auxiliary plate 13 slides into the auxiliary groove 23. At this time, the mounting block 31 is also embedded in the corresponding mounting groove 21. The eccentric rudder stock body 1 can play a role in pulling and preliminarily fixing the rudder blade 2, which is more convenient for connecting the rudder blade 2 and the rudder post 3.

[0054] Reference Figure 7 The auxiliary plate 13 is connected to the rudder blade 2 by auxiliary bolts, and a waist-shaped groove 131 for the auxiliary bolts to pass through is opened on the auxiliary plate 13, so that the error between the rudder blade 2 and the eccentric rudder stock body 1 can be accommodated.

[0055] In order to ensure that the rudder blade 2 can rotate smoothly when the eccentric rudder stock body 1 drives the rudder blade 2 to rotate around the axis of the mounting shaft 4, a bearing 24 is further arranged 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. While ensuring that the mounting shaft 4 and the mounting block 31 can rotate smoothly relative to each other, the mounting block 31 and the inner wall of the mounting groove 21 can be sealed to prevent foreign water plants 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.

[0056] Reference 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 passing through the straight rod 11 and the sleeve 8 to reach the hull.

[0057] Specifically, a sealing groove 81 for installing the sealing assembly 9 is opened on the inner wall of the sleeve 8, and the sealing assembly 9 includes a first sealing ring 91, a second sealing ring 92 and a third sealing ring 93 installed in the sealing groove 81 and spaced from bottom to top along the length direction of the sealing groove 81, wherein the portion located between the first sealing ring 91 and the second sealing ring 92 is called a buffer zone 94, the portion located between the second sealing ring 92 and the third sealing ring 93 is called an extrusion zone 95, and the portion between the third sealing ring 93 and the end of the sealing groove 81 is called a boosting zone 96, and a boosting pipe 97 connected to the boosting zone 96 is provided for injecting sealing oil into the boosting zone 96 to increase the pressure of the boosting zone 96, one end of the boosting pipe 97 is connected to the boosting zone 96, and the other end of the boosting pipe 97 is connected to the oil tank through a water pump. Under normal conditions, the straight rod 11 and the sleeve 8 are sealed by the first sealing ring 91. When water reaches the buffer zone 94 from the first sealing ring 91, the excess pressure in the pressurization zone 96 will flow to the extrusion zone 95, causing the pressure in the extrusion zone 95 to increase, thereby giving an impulse to the buffer zone 94, preventing the water in the buffer zone 94 from reaching the extrusion zone 95, and achieving sealing between the straight rod 11 and the sleeve 8 through high pressure.

[0058] The embodiment of the present application also discloses a method for installing an eccentric rudder stock. The method for installing an eccentric rudder stock comprises the following steps: S1, installing the eccentric rudder stock body 1 on the hull through the sleeve 8; S2, operate the rudder blade 2 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; the auxiliary plate 13 can hold the rudder blade 2, and while maintaining the supporting strength of the rudder blade 2, it can also operate the rudder blade 2 to slide toward the rudder post 3 to adjust the axis alignment of the first hole 51 and the second hole 52.

[0059] S3, with the help of the installation wrench 7, insert the installation wrench 7 into the installation hole 5, so that the installation wrench 7 abuts against the force bolt 42 and slides upward. At this time, the force bolt 42 also passes through the second hole 52 on 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 force bolt 42 to continue to slide, the force 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 on the upper mounting block 31 and passes out 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, the spring pad 61 is directly placed in the embedding groove 22, and the fixing nut 43 is screwed on the end of the connecting bolt 41, so as to fix the position of the installation bolt and fix the rudder blade 2.

[0060] S4, driving the force bolt 42 to rotate with the help of the installation wrench 7, so that the force bolt 42 is screwed onto the connecting nut 44, and the position of the force bolt 42 in the installation hole 5 can be fixed.

[0061] S5, driving the limiting ring 55 to rotate in the installing tube 56 by installing the spanner 7, so that the limiting ring 55 abuts against the force bolt 42 to fix the position of the force bolt 42.

[0062] S6, insert the fixing plate 62 onto the spring pad 61 so that the fixing plate 62 fits against one side of the fixing nut 43, and then install the anti-slip bolt 63 on the fixing nut 43 and the fixing plate 62 to prevent the fixing nut 43 from slipping off, thereby fixing the relative position between the fixing nut 43 and the rudder blade 2.

[0063] S7, fixing the relative position between the auxiliary plate 13 and the rudder blade 2 by means of bolts, thereby achieving connection between the auxiliary plate 13 and the rudder blade 2.

[0064] The implementation principle of the eccentric rudder stock installation method of the present application embodiment is as follows: when the rudder blade 2 is damaged and needs to be replaced, the stop ring 55 can be directly driven by the installation wrench 7 to rotate in the opposite direction to release the matching relationship with the force bolt 42, and then the anti-drop assembly 6 is removed, and the fixing nut 43 is screwed down to release the fixing relationship with the connecting bolt 41. At this time, the connecting bolt 41 releases the fixing of the upper mounting block 31 under the action of gravity, so that the connecting bolt 41 abuts on the first fixing ring 53. Then, the force bolt 42 is driven by the installation wrench 7 to rotate, so that the force bolt 42 is screwed off from the connecting nut 44, and the force bolt 42 can release the fixing of the lower mounting block 31 under the action of gravity and abut on the stop 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 in the direction away from the rudder column 3, so that the connection relationship of the rudder blade 2 can be released. The rudder blade 2 can be installed and disassembled separately without disassembling the eccentric rudder stock body 1, which makes replacement more convenient and greatly reduces the complexity and cost of replacement.

[0065] It can be understood that the first fixing ring 53 and the second fixing ring 54 have the same structure as the limiting ring 55, so that after the rudder blade 2 is disassembled, the connecting bolt 41 and the force bolt 42 can be removed by installing the wrench 7, or the connecting bolt 41 and the force bolt 42 can be installed on a new rudder blade 2 by installing the wrench 7, and the installation and disassembly are very convenient.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in 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 rudder blade (2) 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).

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. The eccentric rudder stock connection structure according to claim 1, characterized in that: 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).

10. 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 9 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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