Anti-movement lower rudder bearing

Abstract

The present application discloses an anti-movement lower rudder bearing, which comprises a rudder bearing body and a bushing which is sleeved in the rudder bearing body and through which a rudder rod passes, wherein the upper end of the rudder bearing body extends radially inwards to form a limiting portion which abuts against the upper end of the bushing, and the lower end is provided with a detachable limiting ring, the inner edge of which extends inwards to abut against the lower end of the bushing; the present application respectively provides a limiting portion and a limiting ring at the upper and lower ends of the rudder bearing body, and the limiting portion and the limiting ring can respectively limit the upper and lower ends of the bushing, thereby ensuring that the bushing is not easy to loosen during long-term use, extending the service life of the lower rudder bearing, and ensuring the stable operation of the rudder rod for a long time.

Description

Technical Field

[0001] The utility model belongs to the technical field of ships, and in particular relates to an anti-movement lower rudder bearing. Background Art

[0002] The marine rudder stock refers to the shaft that controls the rotation of the rudder blade. It is used to bear and transmit the force acting on the rudder blade and the force given by the rudder to the steering device. That is to say, the steering gear rotates the rudder blade through the rudder stock, and the rudder blade bears the reaction force of the water to it to make the ship turn. The section with the largest bending moment on the rudder stock is at the lower rudder bearing. The existing lower rudder bearing is generally a sliding watertight lower rudder bearing, and its internal structure is relatively simple, including: a rudder bearing body and a bushing arranged in the rudder bearing body. The bushing and the rudder bearing body have an interference fit. The rudder stock is provided with a bushing in the bushing. Lubricating oil is generally injected between the bushing and the rudder stock to realize the rotation of the rudder stock in the bushing. Specifically, the existing lower rudder bearings have simple internal structures. Due to the lack of a limiting structure between the bushing and the rudder bearing body, they are prone to loosening and shifting up and down during long-term use, affecting the stability of the rudder bar when turning. In addition, since the rudder bearing body is mostly made of steel, if the main hull is an aluminum alloy ship, the rudder bearing body cannot be directly welded to the main hull, resulting in insufficient installation strength. In addition, the bushing is cast aluminum bronze and is heavy, which has a greater impact on aluminum alloy high-speed ships that are sensitive to weight. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] In order to overcome the above shortcomings, the purpose of the utility model is to provide an anti-movement lower rudder bearing to solve the technical problems that the existing lower rudder bearing bushing is easy to loosen, affecting the stability of the rudder stock when turning, the rudder bearing body cannot be directly welded to the aluminum alloy ship high-speed boat, the installation strength is low, the bushing is cast aluminum bronze, the weight is heavy, and the technical problems that the weight-sensitive aluminum alloy high-speed boat has a greater impact.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the technical solutions provided by this application are as follows:

[0007] An anti-movement lower rudder bearing comprises: a rudder bearing body and a bushing sleeved in the rudder bearing body for the rudder stock to pass through, wherein the upper end of the rudder bearing body extends radially inward to form a limiting portion abutting against the upper end of the bushing, and the lower end is provided with a detachable limiting ring, and the inner edge of the limiting ring extends inward to abut against the lower end of the bushing;

[0008] The present application provides a limiting part and a limiting ring at the upper and lower ends of the rudder bearing body respectively, and the limiting part and the limiting ring can limit the upper and lower ends of the bushing respectively, thereby ensuring that the bushing is not easy to loosen during long-term use, extending the service life of the lower rudder bearing, and ensuring the stable operation of the rudder stock for a long time.

[0009] In some embodiments, the invention further comprises: a waterproof tube sleeve disposed at the upper end of the rudder bearing body and interconnected with the rudder bearing body, wherein the waterproof tube sleeve is for the rudder stock to pass through and can block the moisture on the outer surface of the rudder stock;

[0010] By setting a waterproof pipe sleeve, another layer of protection is added above the rudder bearing body, and the height of the rudder bearing body is increased. Even if the sealing of the lower rudder bearing is not good enough and moisture penetrates through the gap of the lower rudder bearing, the waterproof pipe sleeve will not easily block the moisture from entering the steering gear cabin, thus avoiding damage to the equipment in the steering gear cabin.

[0011] In some embodiments, the rudder bearing body is made of aluminum material;

[0012] Since most high-speed boats are made of aluminum, the rudder bearing body made of aluminum can be directly welded to the main hull, and the installation strength of the rudder bearing body can be well guaranteed.

[0013] In some embodiments, the bushing is made of a sarlon material;

[0014] The bushing is made of sarlon material. Since the sarlon material is light in weight, it can reduce the overall weight of the ship and ensure that the high-speed ship can sail at high speed.

[0015] In some embodiments, a plurality of locking holes are provided on the surface of the limiting ring for the locking member to pass through to connect the limiting ring and the lower end of the rudder bearing body together;

[0016] The limiting ring is connected to the lower end of the rudder bearing body through the locking hole, and the assembly is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the anti-movement lower rudder bearing of the utility model;

[0018] Figure 2 yes Figure 1 Cross-sectional view along the AA direction.

[0019] Reference numerals:

[0020] 1. Rudder bearing body; 101. Limiting part; 2. Bushing; 3. Waterproof pipe sleeve; 4. Limiting ring; 5. Screw; 6. Rudder stock. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0022] The utility model provides an anti-movement lower rudder bearing, comprising: a rudder bearing body 1 and a bushing 2 which is sleeved in the rudder bearing body 1 and through which a rudder rod 6 passes, wherein the upper end of the rudder bearing body 1 extends radially inward to form a limiting portion 101 which abuts against the upper end of the bushing 2, and the lower end is provided with a detachable limiting ring 4, and the inner edge of the limiting ring 4 extends inward to abut against the lower end of the bushing 2.

[0023] Specifically, the lower rudder bearing is arranged at the tail of the hull, the rudder bar 6 vertically passes through the lower rudder bearing and extends downward, and a rudder blade is arranged on the end of the rudder bar 6. When the hull turns, the rudder bar 6 can rotate relative to the bushing 2.

[0024] Specifically, a plurality of locking holes are provided on the surface of the limiting ring 4 , for a locking member to penetrate into and lock the limiting ring 4 to the lower end of the rudder bearing body 1 . Specifically, the locking member is a screw 5 .

[0025] The rudder bearing body 1 and the bushing 2 are tubular structures. During assembly, the bushing 2 is first placed into the rudder bearing body 1 so that the upper end of the bushing 2 abuts against the limiting portion 101 , and then the limiting ring 4 is placed on the lower end of the rudder bearing body 1 and locked with the screw 5 .

[0026] Specifically, a waterproof material may be provided between the bushing 2 and the inner side of the rudder bearing body 1 , and lubricating oil may be provided between the rudder stock 6 and the bushing 2 for lubrication and waterproofing.

[0027] Preferably, the present application also welds a waterproof sleeve 3 at the upper end of the rudder bearing body 1, and the diameter of the waterproof sleeve 3 is equal to that of the rudder bearing body 1. Even if a small amount of water penetrates, it is kept in the waterproof sleeve 3 to avoid penetrating into the steering gear cabin.

[0028] Preferably, the present application adopts aluminum material to make the rudder bearing body 1, and adopts sarlon material to make the bushing 2, so that the rudder bearing body 1 can be directly welded to the aluminum alloy bottom plate to increase its installation strength. The sarlon material is light in weight and can reduce the overall weight of the ship. The sarlon material has excellent corrosion resistance and can prevent seawater erosion.

[0029] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. An anti-movement lower rudder bearing, characterized in that: include: A rudder bearing body (1) and a bushing (2) sleeved in the rudder bearing body (1) for the rudder rod to pass through, wherein the upper end of the rudder bearing body (1) extends radially inward to form a limiting portion (101) abutting against the upper end of the bushing (2), and the lower end is provided with a detachable limiting ring (4), the inner edge of the limiting ring (4) extends inward to abut against the lower end of the bushing (2).

2. The anti-movement lower rudder bearing according to claim 1, characterized in that: Also includes: A waterproof pipe sleeve (3) arranged at the upper end of the rudder support body (1) and connected to the rudder support body (1) can allow the rudder stock (6) to pass through and can block moisture.

3. The anti-movement lower rudder bearing according to claim 1 or 2, characterized in that: The rudder support body (1) is made of aluminum material.

4. The anti-movement lower rudder bearing according to claim 1 or 2, characterized in that: The bushing (2) is made of sialon material.

5. The anti-movement lower rudder bearing according to claim 1 or 2, characterized in that: A plurality of locking holes are provided on the surface of the limiting ring (4) for a locking member to pass through so as to connect the limiting ring (4) and the rudder bearing body (1) together.

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