Installation method of built-in sealing ring of inverted upper rudder bearing

Abstract

The present invention relates to the technical field of ship rudder system installation, and in particular to a method for installing a built-in sealing ring of an inverted upper rudder bearing, which comprises the following steps: S1, inserting a sealing ring assembly into a sealing seat to form a sealing assembly; S2, sleeve the sealing assembly onto a rudder shaft; S3, installing a rudder bearing frame onto the rudder shaft; S4, installing a positioning assembly between the sealing seat and the rudder bearing frame, so that the distance between the sealing seat and the rudder bearing frame meets the requirements of rudder system installation; S5, installing the rudder shaft and the rudder blade on the ship; S6, removing the positioning assembly and the rudder bearing frame; S7, sleeve a rudder bearing member onto the rudder shaft, and the upper rudder bearing member is located above the sealing ring assembly; S8, connecting the rudder bearing frame to the rudder shaft through its own fixing assembly, and the rudder bearing frame is above the upper rudder bearing member. The present invention facilitates the installation of the sealing ring and ensures the installation quality.

Description

Technical Field

[0001] The invention relates to the technical field of ship rudder system installation, and in particular to a method for installing a built-in sealing ring of an inverted upper rudder bearing. Background Art

[0002] The rudder system is a key component of a ship, used to control the ship's heading. The rudder system is generally composed of a steering gear, a rudder shaft and a rudder blade. The rudder shaft bears the weight and torque of the rudder blade and is supported by the upper rudder bearing and the lower rudder bearing. The upper rudder bearing is installed in the steering gear cabin, and a sealing ring is installed at the place where the rudder shaft passes through the deck of the steering gear cabin. The upper rudder bearing is installed on the upper part of the sealing ring, and the upper rudder bearing is usually installed upward. When installing, install the sealing ring first, and then install the rudder bearing.

[0003] In order to reduce costs, the length of the rudder shaft can be shortened, so that the height of the steering gear base can be reduced and the height of the steering gear cabin can be reduced. The upper rudder bearing can be installed upside down and installed in the rudder sleeve, that is, below the deck of the steering gear cabin, which can shorten the length of the rudder shaft.

[0004] The existing installation method of the rudder system superstructure is to install the rudder shaft first, then install the sealing ring, and finally install the rudder bearing. For the built-in sealing ring structure, the sealing ring is inside the rudder sleeve, which is some distance away from the deck of the steering gear cabin. When the rudder bearing is not installed, the rudder shaft is floating, and the annular gap between the rudder shaft and the rudder sleeve is difficult to adjust evenly. The sealing ring and the rudder shaft are installed in an interference fit. The lower sealing ring prevents seawater from entering the steering gear cabin, and the upper sealing ring prevents oil from leaking into the sea. Therefore, the installation directions of the upper and lower sealing rings are opposite. The existing installation method is prone to damage to the sealing ring; moreover, it is difficult to detect whether the sealing ring is installed in place, and the installation quality is difficult to guarantee.

[0005] Therefore, a method for installing a built-in sealing ring of an inverted upper rudder bearing is needed to solve the above problems. Summary of the invention

[0006] The purpose of the invention is to provide a method for installing a built-in sealing ring of an inverted upper rudder bearing, which is convenient for installing the sealing ring and ensures the installation quality.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] The method for installing the built-in sealing ring of the inverted upper rudder bearing comprises the following steps:

[0009] S1. Install the sealing ring assembly into the sealing seat to form a sealing assembly;

[0010] S2, sleeve the sealing assembly onto the rudder shaft;

[0011] S3, installing the rudder support frame onto the rudder shaft;

[0012] S4, installing a positioning assembly between the sealing seat and the rudder support frame so that the distance between the sealing seat and the rudder support frame meets the requirements for rudder system installation;

[0013] S5, installing the rudder shaft and the rudder blade on the ship;

[0014] S6, removing the positioning assembly and the rudder support frame;

[0015] S7, sleeve an upper rudder bearing member on the rudder shaft, wherein the upper rudder bearing member is located above the sealing ring assembly;

[0016] S8. Connect the rudder support frame to the rudder shaft through its own fixing assembly, and the rudder support frame is located above the upper rudder support member.

[0017] Furthermore, the sealing ring assembly comprises an oil sealing ring and a water sealing ring which are coaxially arranged, the oil sealing ring is arranged away from the rudder blade, and the water sealing ring is arranged towards the rudder blade.

[0018] Furthermore, two water sealing rings are provided.

[0019] Furthermore, a spacer ring is provided between the oil sealing ring and the water sealing ring.

[0020] Furthermore, in step S3, the rudder support frame is mounted on the rudder shaft by two hinged bolts.

[0021] Furthermore, in step S5, the rudder shaft and the rudder blade are assembled after being hoisted into place.

[0022] Furthermore, a lifting ring is provided on a side of the rudder shaft away from the sealing assembly.

[0023] Furthermore, the positioning assembly includes a plurality of fully threaded rods, which are arranged at intervals along the circumference of the sealing seat, the fully threaded rods are threadedly connected to the sealing seat, and nuts are installed at both ends of the fully threaded rods extending relative to the rudder support frame.

[0024] Furthermore, in the step S8, a screw plug hole for the full-threaded rod to pass through is provided on the rudder support frame, and after the full-threaded rod is removed, a screw plug is installed at the screw plug hole.

[0025] Furthermore, the method further comprises step S9, wherein the tiller is installed on the rudder shaft, and the steering gear is connected to the tiller to complete the assembly.

[0026] Beneficial effects of the present invention:

[0027] The present invention provides a method for installing a built-in sealing ring of an inverted upper rudder bearing. First, the sealing ring assembly is installed in a sealing seat to form a sealing assembly, and then the sealing assembly is sleeved on the rudder shaft. This work can be done in a workshop, and the installation quality is easy to ensure. After the rudder shaft and the rudder blade are assembled, the rudder bearing frame is removed, and then the upper rudder bearing is installed. During the assembly process of the rudder shaft and the rudder blade, the integrity of the rudder shaft and the sealing assembly is ensured, so that the relative position between the rudder shaft and the sealing assembly will not change. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a built-in sealing ring of an inverted upper rudder bearing of the present invention;

[0029] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0030] In the figure:

[0031] 1. Rudder shaft; 11. Lifting ring; 2. Sealing assembly; 21. Sealing seat; 22. Water sealing ring; 23. Spacer ring; 24. Oil sealing ring; 3. Rudder support frame; 31. Hinge bolt; 4. Fully threaded rod. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and implementation methods. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of them.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] During the assembly of the rudder system, in order to facilitate the installation of the sealing ring and ensure the installation quality, Figure 1-Figure 2 As shown, the present invention provides a method for installing a built-in sealing ring of an inverted upper rudder bearing. The method for installing a built-in sealing ring of an inverted upper rudder bearing comprises the following steps:

[0036] S1, installing the sealing ring assembly into the sealing seat 21 to form a sealing assembly 2;

[0037] S2, putting the sealing assembly 2 on the rudder shaft 1;

[0038] S3, installing the rudder support frame 3 onto the rudder shaft 1;

[0039] S4, installing a positioning assembly between the sealing seat 21 and the rudder carrier 3, so that the distance between the sealing seat 21 and the rudder carrier 3 meets the requirements for rudder system installation;

[0040] S5, installing the rudder shaft 1 and the rudder blade on the ship;

[0041] S6, remove the positioning assembly and the rudder support frame 3;

[0042] S7, putting an upper rudder bearing on the rudder shaft 1, wherein the upper rudder bearing is located above the sealing ring assembly;

[0043] S8, connecting the rudder support frame 3 to the rudder shaft 1 through its own fixing assembly, and the rudder support frame 3 is located above the upper rudder support member.

[0044] First, install the sealing ring assembly into the sealing seat 21 to form the sealing assembly 2. In this process, the sealing ring assembly is very convenient to install; then put the sealing assembly 2 on the rudder shaft 1. This work can be done in the workshop with a good construction environment. After the rudder shaft 1 and the rudder blade are assembled, remove the rudder support frame 3 and then install the rudder support. In the process of assembling the rudder shaft 1 and the rudder blade, ensure the integrity of the rudder shaft 1 and the sealing assembly 2, so that the relative position between the rudder shaft 1 and the sealing assembly 2 will not change, and the installation quality of the sealing ring can be guaranteed. .

[0045] Furthermore, the sealing ring assembly includes an oil sealing ring 24 and a water sealing ring 22 which are coaxially arranged. The oil sealing ring 24 is arranged to face away from the rudder blade, and the water sealing ring 22 is arranged to face the rudder blade. By arranging the oil sealing ring 24, it is possible to effectively prevent oil from leaking into the sea; by arranging the water sealing ring 22, it is possible to prevent seawater from entering the steering gear compartment, thereby corroding the steering gear compartment. The oil sealing ring 24 and the water sealing ring 22 achieve a two-way sealing effect, which ensures environmental friendliness while allowing the steering gear to work normally.

[0046] Furthermore, two water sealing rings 22 are provided. By providing two water sealing rings 22, water can be effectively blocked, thereby further ensuring that water does not enter the steering gear compartment. In other embodiments, the number of water sealing rings 22 can be set according to actual needs, and no excessive restrictions are made here.

[0047] Furthermore, a spacer ring 23 is provided between the oil seal ring 24 and the water seal ring 22. By providing the spacer ring 23, oil and water are effectively separated.

[0048] Furthermore, in step S3, the rudder carrier 3 is mounted on the rudder shaft 1 by two hinge bolts 31. During the installation process, the two hinge bolts 31 are installed diagonally to ensure that the rudder carrier 3 is stably installed on the rudder shaft 1, and the other two hinge bolts 31 are not installed to reduce the workload of subsequent disassembly of the rudder carrier 3.

[0049] Furthermore, in step S1 to step S4, the assembly is completed in the workshop, which can ensure a good construction environment and thus ensure the quality of the assembly.

[0050] Furthermore, in step S5, after the rudder shaft 1 and the rudder blade are hoisted in place, they are assembled. Since the axial positions of the rudder support frame 3 and the sealing seat 21 have been determined in the workshop, it is convenient to assemble the rudder blade and the rudder shaft 1 on the ship, and the quality of the installation can be guaranteed.

[0051] Furthermore, a lifting ring 11 is provided on one side of the rudder shaft 1 away from the sealing assembly 2. By providing the lifting ring 11, it is convenient to transport the rudder shaft 1 to the assembly position by using a lifting device.

[0052] Furthermore, the positioning assembly includes a plurality of fully threaded rods 4, which are arranged at intervals along the circumference of the sealing seat 21, and the fully threaded rods 4 are threadedly connected to the sealing seat 21, and nuts are installed at both ends of the fully threaded rods 4 extending relative to the rudder carrier 3. Four identical fully threaded rods 4 are used, which facilitates the adjustment of the positions of the nuts on the fully threaded rods, and can ensure that the distances between the lower plane of the rudder carrier 3 and the upper plane of the sealing seat 21 are equal at four locations, thereby ensuring the coaxiality of the sealing assembly 2 and the rudder shaft 1.

[0053] Furthermore, in step S8, a screw plug hole for the full threaded rod 4 to pass through is provided on the rudder support frame 3, and after the full threaded rod 4 is removed, a screw plug is installed at the screw plug hole. By providing a screw plug, the screw plug is threadedly connected to the screw plug hole, and the screw plug can prevent dust from entering the sliding friction surface, which not only realizes the function but also has an aesthetic appearance.

[0054] Furthermore, the installation method of the built-in sealing ring of the inverted upper rudder bearing also includes step S9, installing the tiller onto the rudder shaft 1, connecting the steering gear and the tiller, and completing the assembly.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The installation method of the built-in sealing ring of the inverted upper rudder bearing is characterized by: The steps include: S1, installing the sealing ring assembly into the sealing seat (21) to form a sealing assembly (2); S2, sleeve the sealing assembly (2) onto the rudder shaft (1); S3, installing the rudder support frame (3) onto the rudder shaft (1); S4, installing a positioning assembly between the sealing seat (21) and the rudder support frame (3), so that the distance between the sealing seat (21) and the rudder support frame (3) meets the requirements for rudder system installation; S5, installing the rudder shaft (1) and the rudder blade on the ship; S6, removing the positioning assembly and the rudder support frame (3); S7, mounting an upper rudder bearing component on the rudder shaft (1), wherein the upper rudder bearing component is located above the sealing ring assembly; S8. Connect the rudder support frame (3) to the rudder shaft (1) via its own fixing assembly, wherein the rudder support frame (3) is located above the upper rudder support member.

2. The method for installing the built-in sealing ring of the inverted upper rudder bearing according to claim 1 is characterized in that: The sealing ring assembly comprises an oil sealing ring (24) and a water sealing ring (22) which are coaxially arranged, wherein the oil sealing ring (24) is arranged away from the rudder blade, and the water sealing ring (22) is arranged facing the rudder blade.

3. The method for installing the built-in sealing ring of the inverted upper rudder bearing according to claim 2 is characterized in that: Two water sealing rings (22) are provided.

4. The method for installing the built-in sealing ring of the inverted upper rudder bearing according to claim 2, characterized in that: A spacer ring (23) is provided between the oil seal ring (24) and the water seal ring (22).

5. The method for installing the built-in sealing ring of the inverted upper rudder bearing according to claim 1, characterized in that: In the step S3, the rudder support frame (3) is mounted on the rudder shaft (1) via two hinged bolts (31).

6. The method for installing the built-in sealing ring of the inverted upper rudder bearing according to claim 1, characterized in that: In the step S5, the rudder shaft (1) and the rudder blade are hoisted into place and then assembled.

7. The method for installing the built-in sealing ring of the inverted upper rudder bearing according to claim 6, characterized in that: A lifting ring (11) is provided on the side of the rudder shaft (1) away from the sealing assembly (2).

8. The method for installing the built-in sealing ring of the inverted upper rudder bearing according to claim 1, characterized in that: The positioning assembly comprises a plurality of fully threaded rods (4), the plurality of fully threaded rods (4) are arranged at intervals along the circumference of the sealing seat (21), the fully threaded rods (4) are threadedly connected to the sealing seat (21), and nuts are installed at both ends of the fully threaded rods (4) extending relative to the rudder support frame (3).

9. The method for installing the built-in sealing ring of the inverted upper rudder bearing according to claim 8, characterized in that: In the step S8, a screw plug hole for the full-threaded rod (4) to pass through is opened on the rudder support frame (3), and after the full-threaded rod (4) is removed, a screw plug is installed in the screw plug hole.

10. The method for installing the built-in sealing ring of the inverted upper rudder bearing according to claim 1, characterized in that: The method further comprises step S9, wherein the tiller is mounted on the rudder shaft (1), and the steering gear is connected to the tiller to complete the assembly.

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