阅读说明：本技术 一种舰船变速箱用径向轴承结构 (Radial bearing structure for ship gearbox ) 是由 尹忠慰 高庚员 李虎林 金李勇 赵俊 于 2020-05-19 设计创作，主要内容包括：本发明属于径向轴承技术领域,尤其公开了一种舰船变速箱用径向轴承结构,用于解决现有的径向轴承整体结构稳定性和强度较低,且长期使用后磨损需要全套更换,成本较高的问题,其方案如下：包括外轴体和设于外轴体内且与外轴体具有同一圆心的内轴体,所述外轴体与所述内轴体之间滑动安装有多个等间距排布的推力球,若干个所述推力球的外部包裹有固定机构,所述固定机构由对称设置的两个半圆外框组成,且两个所述半圆外框的连接处设有调节装置；所述内轴体为分体式结构,所述内轴体由两个C形件组成。本发明具有成本低、承受力强、灵活度高的优点,能够在长期使用后更换内轴体或调节内轴体位置,增长使用周期,且适用于舰船或机械领域。(The invention belongs to the technical field of radial bearings, and particularly discloses a radial bearing structure for a ship gearbox, which is used for solving the problems that the existing radial bearing is low in overall structural stability and strength, needs to be replaced completely after being used for a long time and is high in cost, and the scheme is as follows: the thrust ball bearing comprises an outer shaft body and an inner shaft body which is arranged in the outer shaft body and has the same circle center with the outer shaft body, a plurality of thrust balls which are arranged at equal intervals are slidably mounted between the outer shaft body and the inner shaft body, a fixing mechanism is wrapped outside the thrust balls, the fixing mechanism is composed of two semicircular outer frames which are symmetrically arranged, and an adjusting device is arranged at the joint of the two semicircular outer frames; the inner shaft body is of a split structure and consists of two C-shaped pieces. The invention has the advantages of low cost, strong bearing capacity and high flexibility, can replace the inner shaft body or adjust the position of the inner shaft body after long-term use, prolongs the service cycle and is suitable for the field of ships or machinery.)

1. A radial bearing structure for a ship gearbox comprises an outer shaft body (1) and an inner shaft body (2) which is arranged in the outer shaft body (1) and has the same circle center with the outer shaft body (1), and is characterized in that a plurality of thrust balls (3) which are arranged at equal intervals are slidably mounted between the outer shaft body (1) and the inner shaft body (2), a fixing mechanism is wrapped outside the plurality of thrust balls (3), the fixing mechanism is composed of two semicircular outer frames (4) which are symmetrically arranged, and an adjusting device is arranged at the joint of the two semicircular outer frames (4);

interior axis body (2) are split type structure, interior axis body (2) comprise two C-shaped spare, the one end of C-shaped spare is equipped with laminating piece (23), and the other end of C-shaped spare is equipped with laminating groove (24), and laminating piece (23) on one of them C-shaped spare contacts with laminating groove (24) on another C-shaped spare, and passes through first locating pin (25) fixed connection between adjacent laminating piece (23).

2. The radial bearing structure for the ship gearbox according to claim 1, wherein the semicircular outer frames (4) are four groups in total, and are correspondingly arranged on two sides of the thrust ball (3) in pairs, and each group of semicircular outer frames (4) is composed of a plurality of semicircular clamping plates and butt-joint plates (41) in a staggered manner.

3. The radial bearing structure for the ship gearbox according to claim 2, wherein the inner wall of the semicircular clamping plate is slidably connected with the thrust ball (3), a limit hole (42) is formed in the butt plate (41) on one side of the semicircular clamping plate, a limit block (43) is fixed on the butt plate (41) on the other side of the semicircular clamping plate, and the limit hole (42) is matched with the limit block (43).

4. The radial bearing structure for the ship gearbox is characterized in that the adjusting device comprises a clamping groove (411) formed in one end of the semicircular frame (4) and a protruding clamping plate (412) fixed to the other end of the semicircular frame (4), the protruding clamping plate (412) extends to the inside of the clamping groove (411), and the protruding clamping plates (412) on one group of semicircular frames (4) are fixedly connected with the other group of semicircular frames (4) through second positioning pins (413).

5. The radial bearing structure for the ship gearbox according to claim 4, wherein a space of 0.5-2cm is provided between the protruding clamping plate (412) and the inner wall of the clamping groove (411).

6. The radial bearing structure for the ship gearbox as claimed in claim 1, wherein the fitting groove (24) is an L-shaped structure, and a space of 0.5-2cm is provided between the fitting block (23) on one C-shaped member and the side wall of the contacting fitting groove (24).

7. The radial bearing structure for the ship gearbox according to claim 1, wherein a first sliding groove (11) is formed on the inner wall of the outer shaft body (1), a second sliding groove (21) is formed on the outer wall of the inner shaft body (2), the first sliding groove (11) corresponds to the second sliding groove (21), and the thrust ball (3) slides in the first sliding groove (11) and the second sliding groove (21).

8. The radial bearing structure for a ship gearbox according to claim 1, characterized in that the inner wall of the inner shaft body (2) is provided with a plurality of anti-slip teeth (22) arranged along the same direction.

Technical Field

The invention relates to the technical field of radial bearings, in particular to a radial bearing structure for a ship gearbox.

Background

Sliding bearings are of many types, and can be classified into radial bearings (subjected to radial load) and thrust bearings (subjected to axial load) depending on the manner in which they are subjected to load. The part of the shaft supported by the bearing is called a journal, the part matched with the journal is called a bearing bush, the part of the bearing bush which is made into a full cylinder shape is called a shell part of the shaft sleeve bearing bush, the upper half part of the shell part is called a bearing cover, and the lower half part of the shell part is called a bearing seat. The cover and the seat are connected by a stud, the joint surfaces of the cover and the seat are positioned by a spigot or a pin, and gaskets with different thicknesses can be placed to adjust the bearing clearance. The mating surfaces of most bearings are horizontal and also angled to accommodate the requirement that the direction of the load be close to perpendicular to the mating surfaces. In order to facilitate the lubricating oil to enter between the friction surfaces, the bearing cover is provided with an oil filling hole, and the bearing bush is provided with an axial oil groove for distributing the lubricating oil. The bearing cover and the bearing seat are mostly made of cast iron, and the bearing structure with large bearing load is a cast steel or steel plate welding structure.

At present, the conventional radial bearing for the wind power gearbox is simple in structure, generally comprises an outer shaft body and an inner shaft body, and is wrapped by a thrust ball, low in overall structural stability and strength, high in cost, inconvenient in bearing disassembly and assembly, convenient to overhaul and oil-lubricated, and incapable of meeting high-consumption use of the gearbox in the field of ships and warships, and the abrasion needs to be replaced in a complete set after long-term use. Therefore, we propose a radial bearing structure for a ship transmission to solve the above problems.

Disclosure of Invention

Based on the technical problems that the existing radial bearing in the background technology is low in overall structural stability and strength, needs to be replaced in a complete set after being used for a long time and is high in cost, the invention provides a radial bearing structure for a ship gearbox.

The invention provides a radial bearing structure for a ship gearbox, which comprises an outer shaft body and an inner shaft body, wherein the inner shaft body is arranged in the outer shaft body and has the same circle center as the outer shaft body;

the inner shaft body is of a split structure and is composed of two C-shaped pieces, one end of each C-shaped piece is provided with a fitting block, the other end of each C-shaped piece is provided with a fitting groove, the fitting block on one C-shaped piece is in contact with the fitting groove on the other C-shaped piece, and adjacent fitting blocks are fixedly connected through first positioning pins.

Preferably, the semicircular outer frames are four groups in total, and are correspondingly arranged on two sides of the thrust ball in pairs, and each group of the semicircular outer frames is formed by staggering a plurality of semicircular clamping plates and butt-joint plates.

Preferably, the inner wall of semicircle splint with thrust ball sliding connection is located spacing hole has been seted up on the butt joint plate of semicircle splint one side, is located be fixed with the stopper on the butt joint plate of semicircle splint opposite side, just spacing hole with stopper looks adaptation.

Preferably, adjusting device is including seting up the draw-in groove of semicircle frame one end and being fixed in the protrusion cardboard of the semicircle frame other end, the protrusion cardboard extends to the inside of draw-in groove, and the protrusion cardboard on a set of semicircle frame passes through second locating pin and another set of semicircle frame fixed connection.

Preferably, an interval of 0.5-2cm is arranged between the protruding clamping plate and the inner wall of the clamping groove.

Preferably, the fitting groove is of an L-shaped structure, and a space of 0.5-2cm is formed between the fitting block on one C-shaped part and the side wall of the fitting groove in contact with the fitting block.

Preferably, the inner wall of the outer shaft body is provided with a first sliding groove, the outer wall of the inner shaft body is provided with a second sliding groove, the first sliding groove corresponds to the second sliding groove, and the thrust ball slides in the first sliding groove and the second sliding groove.

Preferably, the inner wall of the inner shaft body is provided with a plurality of anti-slip teeth arranged along the same direction.

Compared with the prior art, the invention has the beneficial effects that:

1. the fixing mechanism is arranged outside the thrust ball between the outer shaft body and the inner shaft body, so that the structural stability of the thrust ball part is improved, the thrust ball is convenient to disassemble, assemble and maintain orderly, the position deviation of the thrust ball is prevented, lubricating oil is favorably injected, and the flexibility of the whole radial bearing is improved;

2. through being split type structure with interior shaft body design, can use in the long-term change shaft body or adjust interior shaft body position after producing wearing and tearing at journal bearing, and the mode of change, adjustment is simple quick, cooperates the adjusting device of two semicircle frame junctions and the design of reservation structure, both conveniently carries out the position adjustment that suits to the thrust ball, and then improves whole journal bearing's result of use, does not influence journal bearing's normal work yet.

The invention has the advantages of ingenious design, simple and stable structure, low cost, strong bearing capacity and high flexibility, can replace the inner shaft body or adjust the position of the inner shaft body after long-term use, prolongs the service cycle and is suitable for the field of ships or machinery.

Drawings

FIG. 1 is a side sectional view of a radial bearing structure for a ship gearbox, which is provided by the invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a top detailed view of a thrust ball portion of a radial bearing structure for a ship gearbox according to the present invention;

fig. 4 is a perspective view of an inner shaft body of a radial bearing structure for a ship gearbox provided by the invention.

In the figure: the anti-skid device comprises an outer shaft body 1, an inner shaft body 2, a thrust ball 3, a semicircular outer frame 4, a first sliding groove 11, a second sliding groove 21, an anti-skid tooth 22, an attaching block 23, an attaching groove 24, a first positioning pin 25, a butt joint plate 41, a limiting hole 42, a limiting block 43, a clamping groove 411, a protruding clamping plate 412 and a second positioning pin 413.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.