Propeller shaft fixing mechanism

Abstract

The utility model discloses a propeller shaft fixing mechanism convenient to maintain, including installation component, be provided with connecting assembly on the installation roof top, the connecting assembly includes annular connecting plate, the annular connecting plate lower surface fixedly connected with large -scale bolt, connecting strip inboard surface fixedly connected with bearing, large -scale bolt side surface swing joint in the circular top hole inner wall, the utility model relates to propeller shaft fixing mechanism technical field, this propeller shaft fixing mechanism convenient to maintain, through the connecting assembly that annular connecting plate, large -scale bolt, connecting strip, bearing constitute, and large -scale bolt and connecting strip one -to -one and support nut, realize the stable assembly and accurate positioning of propeller shaft, the quick butt joint and dismounting of connecting assembly and installation component are convenient, solved the technical problem that traditional fixed mechanism dismouting is complicated, shaft body positioning precision is insufficient, transmission friction is big, has promoted the mechanism assembly efficiency and operation reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of propeller shaft fixing mechanisms, specifically a propeller shaft fixing mechanism that is easy to maintain. Background Technology

[0002] The easy-to-maintain propeller shaft fixing mechanism is a core fixing component used in propeller drive systems of ships, underwater equipment, etc., primarily achieving stable support, precise positioning, and convenient operation and maintenance of the propeller shaft. This mechanism adopts a split flange and quick-release locking structure, combined with a positioning pin and groove guiding system, and an embedded, non-removable lubrication channel, solving the pain points of traditional integrated fixing mechanisms such as cumbersome disassembly, difficult reinstallation and positioning, and high lubrication and maintenance costs. Maintenance requires no disassembly of the base connectors; only the locking clips and flange need to be removed for shaft inspection. Lubricant can be directly added through the self-sealing oil filler port, significantly reducing downtime for maintenance, improving propeller shaft operational stability, and lowering long-term maintenance costs.

[0003] In existing technologies, mature structures that use integrated flanges and bolts for fastening have the advantages of simple structure, low manufacturing cost, strong overall rigidity, and good load-bearing stability. However, maintenance requires disassembling the fixed flange and equipment base as a whole. The number of bolts is large and the force points are dispersed during disassembly. Improper operation can easily lead to deformation of the shaft and flange, or stripping of the base threads, increasing additional maintenance costs. At the same time, the lubrication channels are mostly closed designs. When adding lubricant or cleaning the channels later, it is necessary to remove some fixed components, which is not only time-consuming and inefficient, but may also damage the fitting accuracy of the shaft and bearing due to repeated disassembly and assembly.

[0004] Therefore, this utility model provides a propeller shaft fixing mechanism that is easy to maintain, in order to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a propeller shaft fixing mechanism that is easy to maintain, thus solving the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a propeller shaft fixing mechanism that is easy to maintain, comprising an installation assembly. The installation assembly includes an annular mounting base plate, a protective cylinder fixedly connected to the upper surface of the annular mounting base plate, a connecting cylinder movably connected to the inner wall of the protective cylinder, a circular top plate fixedly connected to the top of the connecting cylinder, an installation top plate fixedly connected to the upper surface of the circular top plate, a circular top hole formed on the upper surface of the installation top plate, and a connecting assembly above the installation top plate. The connecting assembly includes an annular connecting plate, a large bolt fixedly connected to the lower surface of the annular connecting plate, a connecting strip fixedly connected to the inner wall of the annular connecting plate, a bearing fixedly connected to the inner surface of the connecting strip, and the side surface of the large bolt movably connected to the inner wall of the circular top hole.

[0007] Furthermore, the outer surface of the bottom of the bearing is movably connected to the inner surface of the top of the connecting cylinder. There are four large bolts and four connecting strips, and their positions correspond. Each of the four large bolts is provided with a matching nut on its outer side. A propeller shaft is provided on the inner wall of the inner ring of the bearing.

[0008] By adopting the above technical solution, a connecting assembly consisting of an annular connecting plate, large bolts, connecting strips, and bearings is used. The large bolts and connecting strips correspond one-to-one and are equipped with nuts, which realizes the stable assembly and precise positioning of the propeller shaft. This facilitates the rapid docking and disassembly of the connecting assembly and the installation assembly, and solves the technical problems of cumbersome disassembly and assembly, insufficient shaft positioning accuracy, and large transmission friction of traditional fixed mechanisms. This improves the assembly efficiency and operational reliability of the mechanism.

[0009] Furthermore, the lower surface of the connecting strip is movably connected to the upper surface of the mounting top plate, and the upper surface of the mounting top plate is provided with oil leakage holes, the number of which are evenly distributed on the upper surface of the mounting top plate.

[0010] By adopting the above technical solution, several oil leakage holes are evenly opened on the upper surface of the mounting top plate. Combined with the movable contact structure between the lower surface of the connecting strip and the upper surface of the mounting top plate, excess lubricant during the shaft lubrication process, as well as oil stains and impurities generated during operation, can be quickly discharged, avoiding lubricant accumulation between the mounting top plate and the connecting strip, which would affect the component fitting accuracy and lubrication effect.

[0011] Furthermore, four small bolts are fixedly connected to the upper surface of the circular top plate, and the four small bolts are positioned in corresponding positions. Matching bolts are provided on the outside of the four small bolts.

[0012] By adopting the above technical solution, four small bolts are set at corresponding positions on the upper surface of the circular top plate, and matching nuts are provided to achieve a detachable and fastened connection between the circular top plate and the mounting top plate. On the one hand, this can enhance the overall structural rigidity of the mounting assembly, prevent the mechanism from vibrating or displacing when the propeller shaft is running at high speed, and ensure assembly stability.

[0013] Furthermore, a bottom circular recess is provided at the center of the lower surface of the annular mounting base plate, and a circular limiting plate is fixedly connected to the inner wall of the bottom circular recess. The upper surface of the circular limiting plate is fixedly connected to the bottom of the connecting cylinder.

[0014] By adopting the above technical solution, a bottom circular recess is opened at the center of the lower surface of the annular mounting base plate, and a circular limiting plate is fixed on the inner wall of the recess. The upper surface of the circular limiting plate is fixedly connected to the bottom of the connecting cylinder, which can play a precise axial limiting and radial positioning role for the connecting cylinder, and prevent the connecting cylinder from moving up and down or radially offset when the shaft is running.

[0015] Furthermore, the annular mounting base plate has four mounting holes on its upper surface, and the mounting holes are located in corresponding positions.

[0016] By adopting the above technical solution, four corresponding mounting holes are opened on the upper surface of the annular mounting base plate, which facilitates the quick and accurate installation and fixation of the entire fixing mechanism to the preset installation position such as the hull or equipment base using fasteners such as bolts, so as to achieve a reliable connection between the mechanism and the mounting base.

[0017] Beneficial effects

[0018] This invention provides a propeller shaft fixing mechanism that is easy to maintain. Compared with the prior art, it has the following advantages:

[0019] 1. This easy-to-maintain propeller shaft fixing mechanism uses a connecting assembly consisting of an annular connecting plate, large bolts, connecting bars, and bearings. The large bolts and connecting bars correspond one-to-one and are equipped with nuts, which enables stable assembly and precise positioning of the propeller shaft. It facilitates quick docking and disassembly of the connecting and installation components, solving the technical problems of cumbersome disassembly and assembly, insufficient shaft positioning accuracy, and high transmission friction of traditional fixing mechanisms, thereby improving the assembly efficiency and operational reliability of the mechanism.

[0020] 2. This easy-to-maintain propeller shaft fixing mechanism, by evenly opening several oil leakage holes on the upper surface of the mounting top plate, combined with the movable contact structure between the lower surface of the connecting strip and the upper surface of the mounting top plate, can quickly discharge excess lubricant during the shaft lubrication process, as well as oil stains and impurities generated during operation, thus preventing lubricant from accumulating between the mounting top plate and the connecting strip and affecting the component fitting accuracy and lubrication effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the external structure of this utility model;

[0023] Figure 2 This is the utility model Figure 1 Enlarged view of the structure at point A in the image;

[0024] Figure 3 This is a bottom view of the structure of this utility model;

[0025] Figure 4 This is a partial unfolded view of the structure of this utility model.

[0026] In the diagram: 1. Mounting assembly; 101. Annular mounting base plate; 102. Mounting hole; 103. Bottom circular recess; 104. Circular limiting plate; 105. Connecting cylinder; 106. Circular top plate; 107. Mounting top plate; 108. Small bolt; 109. Circular top hole; 110. Protective cylinder; 111. Oil leakage hole; 2. Connecting assembly; 201. Annular connecting plate; 202. Large bolt; 203. Connecting strip; 204. Bearing. Detailed Implementation

[0027] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0028] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Reference Figures 1 to 4 This application provides a propeller shaft fixing mechanism that is easy to maintain, including an installation component 1. The installation component 1 includes an annular mounting base plate 101. A protective cylinder 110 is fixedly connected to the upper surface of the annular mounting base plate 101. A connecting cylinder 105 is movably connected to the inner wall of the protective cylinder 110. A circular top plate 106 is fixedly connected to the top of the connecting cylinder 105. An installation top plate 107 is fixedly connected to the upper surface of the circular top plate 106. A circular top hole 109 is opened on the upper surface of the installation top plate 107. A connecting component 2 is provided above the installation top plate 107. The connecting component 2 includes an annular connecting plate 201. A large bolt 202 is fixedly connected to the lower surface of the annular connecting plate 201. A connecting strip 203 is fixedly connected to the inner wall of the annular connecting plate 201. A bearing 204 is fixedly connected to the inner surface of the connecting strip 203. The side surface of the large bolt 202 is movably connected to the inner wall of the circular top hole 109. The bottom outer surface of the bearing 204 is movably connected to the top inner surface of the connecting cylinder 105. There are four large bolts 202 and four connecting bars 203, and their positions correspond. Matching nuts are provided on the outer side of each of the four large bolts 202. A propeller shaft is provided on the inner wall of the inner ring of the bearing 204.

[0030] In this embodiment, in the mounting assembly 1, the annular mounting base plate 101 provides the bottom support foundation for the entire mechanism, and the protective cylinder 110 fixedly connected above it forms a lateral protection and guide chamber. The connecting cylinder 105 is movably assembled on the inner wall of the protective cylinder 110, and can achieve precise positioning and slight adjustment along the axial direction of the protective cylinder 110. The circular top plate 106 fixed on the top of the connecting cylinder 105 is used to support the mounting top plate 107, and the circular top hole 109 opened on the mounting top plate 107 provides positioning holes for the assembly of the connecting assembly 2. In the connecting assembly 2, the annular connecting plate 201 serves as the bearing base. Four large bolts 202 fixed on its lower surface correspond one-to-one with four connecting strips 203. The large bolts 202 pass through the circular top hole 109 and are fastened with matching nuts to achieve detachable fixing of the connecting assembly 2 and the mounting top plate 107. The bearing 204 fixed inside the connecting strip 203 is used to adapt to the propeller shaft. The outer bottom of the bearing 204 is in contact with the inner top of the connecting cylinder 105, which not only provides lateral support for the bearing 204 by the connecting cylinder 105, but also reduces the frictional resistance of the propeller shaft during operation, ensuring high-speed and stable transmission of the shaft. The overall structure adopts a modular assembly design, which takes into account both the reliability of fixing and the convenience of disassembly and assembly.

[0031] Reference Figures 1 to 4 In one aspect of this embodiment, the lower surface of the connecting strip 203 is movably connected to the upper surface of the mounting top plate 107. The upper surface of the mounting top plate 107 is provided with oil leakage holes 111, and the number of oil leakage holes 111 is several and evenly distributed on the upper surface of the mounting top plate 107.

[0032] In this embodiment, the lower surface of the connecting strip 203 is movably fitted with the upper surface of the mounting plate 107 to form a closed fitting surface. The mounting plate 107 has several evenly spaced oil drain holes 111, the core function of which is to guide and redundantly discharge the lubricating medium. During propeller shaft operation, the mating surface between the bearing 204 and the shaft body requires continuous lubrication. Excess lubricant or mixed oil stains generated during operation will flow along the fitting gap between the connecting strip 203 and the mounting plate 107 onto the upper surface of the mounting plate 107. These can be quickly discharged through the evenly distributed oil drain holes 111, preventing lubricant accumulation on the mating surface and affecting the assembly accuracy of the connecting component 2. It also prevents prolonged oil stain retention from causing component corrosion or lubrication failure. Furthermore, the discharge status of the oil drain holes 111 allows for a direct assessment of the internal lubrication condition, providing a reference for maintenance operations and ensuring the stable operation of the mechanism's lubrication system.

[0033] Reference Figures 1 to 4 In one aspect of this embodiment, a small bolt 108 is fixedly connected to the upper surface of the circular top plate 106. There are four small bolts 108 in total and their positions are corresponding. Matching bolts are provided on the outside of the four small bolts 108.

[0034] In this embodiment, four small bolts 108 are fixedly connected to the upper surface of the circular top plate 106 at corresponding positions, and together with matching nuts, to achieve a detachable and secure connection between the mounting top plate 107 and the circular top plate 106. The working principle is that the uniform force tightening of the four small bolts 108 tightly fixes the mounting top plate 107 to the circular top plate 106, enhancing the overall rigidity of the top structure of the mounting assembly 1 and preventing displacement or loosening between the mounting top plate 107 and the circular top plate 106 caused by vibrations generated during the high-speed operation of the propeller shaft, thus ensuring the stability of the assembly reference of the connecting assembly 2. Simultaneously, compared to an integrated fixed structure, the detachable design of the small bolts 108 allows for quick disassembly of the connection between the mounting top plate 107 and the circular top plate 106 during maintenance, facilitating the inspection or replacement of internal components such as the connecting cylinder 105 and the protective cylinder 110 without disassembling the entire mounting base, thus improving maintenance convenience.

[0035] Reference Figures 1 to 4 In one aspect of this embodiment, a bottom circular recess 103 is provided at the center of the lower surface of the annular mounting base plate 101, and a circular limiting plate 104 is fixedly connected to the inner wall of the bottom circular recess 103. The upper surface of the circular limiting plate 104 is fixedly connected to the bottom of the connecting cylinder 105.

[0036] In this embodiment, the bottom circular recess 103 radially positions the circular limiting plate 104 through its inner wall contour, preventing the circular limiting plate 104 from shifting horizontally. The fixed connection between the circular limiting plate 104 and the bottom of the connecting cylinder 105 provides axial positioning for the connecting cylinder 105, preventing it from moving up and down under the axial force of the propeller shaft. It also transmits the radial load borne by the connecting cylinder 105 to the annular mounting base plate 101, achieving uniform load distribution. Furthermore, the closed structure of the bottom circular recess 103 prevents external impurities and water from entering the bottom connection of the connecting cylinder 105, avoiding corrosion or wear at the connection point, ensuring the long-term stability of the assembly and positioning of the connecting cylinder 105, and thus ensuring the coaxiality of the propeller shaft.

[0037] Reference Figures 1 to 4 In one aspect of this embodiment, the upper surface of the annular mounting base plate 101 is provided with mounting holes 102, and the number of mounting holes 102 is four and their positions are corresponding.

[0038] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0039] Working principle: During installation, the entire mounting assembly 1 is first fixed to the ship's hull or equipment's pre-set base using matching fasteners through four evenly distributed mounting holes 102 on the annular mounting base plate 101 of the mounting assembly 1, thus achieving the basic positioning of the entire mechanism. Then, the bottom of the connecting cylinder 105 is fitted into the bottom circular recess 103 on the lower surface of the annular mounting base plate 101 via a circular limiting plate 104, ensuring precise positioning of the connecting cylinder 105 along the inner wall of the protective cylinder 110. Finally, the mounting top plate 106 is secured by four small bolts 108 on its upper surface and matching nuts. 07. Securely fasten the propeller shaft to the circular top plate 106, completing the overall assembly of mounting component 1. Next, insert the propeller shaft into the inner ring of the bearing 204 of the connecting component 2, so that the outer bottom of the bearing 204 is in movable contact with the inner top of the connecting cylinder 105. Then, insert the four large bolts 202 of the connecting component 2 one by one into the circular top holes 109 of the mounting top plate 107, and tighten them with matching nuts to achieve detachable fixing of the connecting component 2 and the mounting component 1. At the same time, the lower surface of the connecting strip 203 is in movable contact with the upper surface of the mounting top plate 107, completing the overall assembly of the propeller shaft. During the operation of the mechanism, the bearing 204 provides low-friction support for the high-speed rotation of the propeller shaft, ensuring transmission stability. Several oil leakage holes 111 evenly distributed on the mounting top plate 107 can timely drain excess lubricant and mixed oil stains from the mating surface between the bearing 204 and the shaft, avoiding lubricant accumulation that affects the component fitting accuracy and operational stability. When maintenance is required, first remove the large bolt 202 and matching nut of the connecting component 2. After removing the connecting component 2, the propeller shaft and bearing 204 can be inspected or replaced. If it is necessary to inspect the internal parts of the installation component 1, the small bolt 108 and matching nut can be removed. After separating the installation top plate 107 and the circular top plate 106, the connecting cylinder 105, protective cylinder 110 and other components can be maintained. After maintenance, the reinstallation can be completed by reversing the above installation process. The whole process does not require disassembling the fixed connection between the mechanism and the base, realizing convenient maintenance.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A propeller shaft fixing mechanism that is easy to maintain, comprising a mounting assembly (1), characterized in that: The mounting assembly (1) includes an annular mounting base plate (101), a protective cylinder (110) is fixedly connected to the upper surface of the annular mounting base plate (101), a connecting cylinder (105) is movably connected to the inner wall of the protective cylinder (110), a circular top plate (106) is fixedly connected to the top of the connecting cylinder (105), a mounting top plate (107) is fixedly connected to the upper surface of the circular top plate (106), a circular top hole (109) is opened on the upper surface of the mounting top plate (107), and a connecting assembly (2) is provided above the mounting top plate (107). The connecting assembly (2) includes an annular connecting plate (201), a large bolt (202) is fixedly connected to the lower surface of the annular connecting plate (201), a connecting strip (203) is fixedly connected to the inner wall of the annular connecting plate (201), a bearing (204) is fixedly connected to the inner surface of the connecting strip (203), and the side surface of the large bolt (202) is movably connected to the inner wall of the circular top hole (109).

2. The propeller shaft fixing mechanism for easy maintenance according to claim 1, characterized in that: The bottom outer surface of the bearing (204) is movably connected to the top inner surface of the connecting cylinder (105). There are four large bolts (202) and four connecting strips (203) in corresponding positions. Each of the four large bolts (202) is provided with a matching nut on its outer side. The inner wall of the inner ring of the bearing (204) is provided with a propeller shaft.

3. The propeller shaft fixing mechanism for easy maintenance according to claim 1, characterized in that: The lower surface of the connecting strip (203) is movably connected to the upper surface of the mounting top plate (107). The upper surface of the mounting top plate (107) is provided with oil leakage holes (111). The number of oil leakage holes (111) is several and they are evenly distributed on the upper surface of the mounting top plate (107).

4. The propeller shaft fixing mechanism for easy maintenance according to claim 1, characterized in that: The upper surface of the circular top plate (106) is fixedly connected with four small bolts (108) in corresponding positions, and matching bolts are provided on the outside of the four small bolts (108).

5. The propeller shaft fixing mechanism for easy maintenance according to claim 1, characterized in that: A bottom circular recess (103) is provided at the center of the lower surface of the annular mounting base plate (101). A circular limiting plate (104) is fixedly connected to the inner wall of the bottom circular recess (103). The upper surface of the circular limiting plate (104) is fixedly connected to the bottom of the connecting cylinder (105).

6. The propeller shaft fixing mechanism for easy maintenance according to claim 1, characterized in that: The upper surface of the annular mounting base plate (101) is provided with mounting holes (102), and there are four mounting holes (102) in corresponding positions.

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