Water lubricated bearing and transmission device

Abstract

The utility model provides a water-lubricated bearing and a transmission device. The water-lubricated bearing comprises an outer ring, an inner ring, a first limiting groove, a second limiting groove, balls, a base layer, an outer surface layer and a protective part, the inner ring is arranged on the inner side of the outer ring, a first limiting groove is formed in the inner wall of the outer ring, a second limiting groove is formed in the outer wall of the inner ring, the balls are arranged between the interiors of the first limiting groove and the second limiting groove, and a base layer and an outer surface layer are arranged on the outer wall of each ball; the base layer and the outer surface layer which are the ceramic coatings are respectively arranged on the outer side of the ball, so that a water film can be provided in a high-speed rotating and using process, and the ball has longer service life, safety and reliability in combination with the lubricity of water under a certain condition; the protection piece can prevent impurities in water from entering the balls between the outer ring and the inner ring, the service life is prolonged, and safety and reliability are improved.

Description

Technical Field

[0001] The present application belongs to the field of bearing technology, and specifically relates to a water-lubricated bearing and a transmission device. Background Art

[0002] Water-lubricated bearings are bearings that are used directly in water without any sealing device. The bearings are lubricated by the medium and do not require lubricating oil or grease, eliminating the harm of medium contamination. Bearings are often used in flowing water, which can effectively control the temperature rise of the bearings, thus having a long service life and being safe and reliable.

[0003] The structure is suitable for horizontal axis, vertical axis and inclined axis, and it is impact-resistant and has the function of absorbing vibration. It is wear-resistant and has high load-bearing performance. Because it can withstand high loads, the bearing length can be reduced. It is mainly used in vertical centrifugal pumps, vertical mixed flow pumps, vertical diagonal flow pumps, nuclear-grade pumps for nuclear power plants, ships and other fluid machinery.

[0004] The overall strength and durability of the outer wall of the water-lubricated bearings currently available on the market are very poor during operation, and foreign matter can easily enter the balls, causing problems during use and affecting service life. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0006] In order to solve the above problems, the first aspect of the present application provides a water-lubricated bearing, comprising: an outer ring, an inner ring, a first limiting groove, a second limiting groove, a ball, a base layer, an outer layer and a protective member;

[0007] The inner ring is arranged on the inner side of the outer ring, a first limiting groove is opened on the inner wall of the outer ring, a second limiting groove is opened on the outer wall of the inner ring, a plurality of the balls are arranged between the first limiting groove and the second limiting groove, a base layer and an outer layer are arranged on the outer wall of the ball, both the base layer and the outer layer are ceramic coatings, and the protective member is arranged between the outer ring and the inner ring and is located on both sides of the ball.

[0008] Optionally, the protective member includes: a card plate and a card block;

[0009] A plurality of the clamping plates are arranged between the outer ring and the inner ring, a positioning groove is provided on the side wall of the outer ring, and a clamping block is arranged on each of the clamping plates at a position matching the positioning groove.

[0010] Optionally, the card block is a dovetail structure.

[0011] Optionally, the number of the plurality of card boards is two.

[0012] Optionally, the outer ring and the inner ring are made of No. 45 steel.

[0013] The second aspect of the present application provides a transmission device, including: a mounting frame, a drive shaft, a transmission shaft, a first gear, a second gear and a water-lubricated bearing as any technical solution in the first aspect, the drive shaft and the transmission shaft are arranged on the mounting frame through the water-lubricated bearing, the first gear is arranged on the drive shaft, a plurality of second gears are arranged on the transmission shaft, and at least one second gear is meshed and connected with the first gear.

[0014] Optionally, the number of the plurality of second gears is two, and the two second gears are mirror-imaged on the transmission shaft.

[0015] Optionally, a key is provided on the transmission shaft, and positioning members are respectively provided on the plurality of second gears, and the positioning members can be detachably provided on the outer wall of the key.

[0016] Optionally, the positioning member is a positioning bolt.

[0017] Optionally, the mounting frame is a U-shaped structure.

[0018] Beneficial Effects

[0019] A water-lubricated bearing and transmission device provided in the embodiments of the utility model are respectively provided with a base layer and an outer layer of a ceramic coating on the outside of the ball, so that a water film can be provided during high-speed rotation. Combined with the lubricity of water under certain conditions, the ball has a longer service life and safety and reliability. The protective part can prevent impurities in the water from entering the ball between the outer ring and the inner ring, thereby improving the service life and safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the water-lubricated bearing and the lubricating bearing of the transmission device of the utility model;

[0021] Figure 2 This is a ball structure diagram of the water-lubricated bearing and transmission device of the utility model;

[0022] Figure 3 The utility model is a transmission device structure diagram of a water-lubricated bearing and a transmission device.

[0023] The reference numerals are:

[0024] 1. Outer ring; 2. Inner ring; 3. First limiting groove; 4. Second limiting groove; 5. Ball; 51. Base layer; 52. Outer layer; 6. Protective member; 61. Clamp plate; 62. Clamp block; 7. Mounting frame; 8. Drive shaft; 9. Transmission shaft; 10. First gear; 11. Second gear; 12. Key; 13. Positioning member. DETAILED DESCRIPTION

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] See also Figure 1-2 As shown, according to the first aspect of an embodiment of the present application, a water-lubricated bearing is provided, comprising: an outer ring 1, an inner ring 2, a first limiting groove 3, a second limiting groove 4, a ball 5, a base layer 51, an outer layer 52 and a protective member 6; the inner ring 2 is arranged on the inner side of the outer ring 1, the first limiting groove 3 is opened on the inner wall of the outer ring 1, the second limiting groove 4 is opened on the outer wall of the inner ring 2, a plurality of the balls 5 are arranged between the first limiting groove 3 and the second limiting groove 4, a base layer 51 and an outer layer 52 are arranged on the outer wall of the ball 5, the base layer 51 and the outer layer 52 are both ceramic coatings, and the protective member 6 is arranged between the outer ring 1 and the inner ring 2 and on both sides of the ball 5.

[0030] Specifically, the inner ring 2 is installed inside the outer ring 1, and a plurality of balls 5 are installed between the first limiting groove 3 of the outer ring 1 and the second limiting groove 4 of the inner ring 2. The first limiting groove 3 and the second limiting groove 4 can limit the balls 5. The arrangement of the balls 5 reduces the friction between the inner ring 2 and the outer ring 1. A base layer 51 and an outer layer 52 are arranged on the outside of the balls 5 from the inside to the outside. Both the base layer 51 and the outer layer 52 are ceramic coatings, which can provide a water film during high-speed rotation. Combined with the lubricity of water under certain conditions, the balls 5 have a longer service life and safety and reliability. The protective member 6 is installed between the outer ring 1 and the inner ring 2, and is located on both sides of the balls 5. It has a protective effect and can prevent impurities in the water from entering the balls 5 between the outer ring 1 and the inner ring 2, thereby improving the service life and safety and reliability.

[0031] The protective member 6 includes: a clamping plate 61 and a clamping block 62;

[0032] A plurality of the clamping plates 61 are disposed between the outer ring 1 and the inner ring 2 . A positioning groove is provided on the side wall of the outer ring 1 . A clamping block 62 is provided on each of the clamping plates 61 at a position matching the positioning groove.

[0033] Specifically, each protective member 6 includes a plurality of card plates 61, which can shield and protect one side of the outer ring 1 and the inner ring 2 after being spliced ​​together. A plurality of positioning grooves are provided on the side wall of the outer ring 1, and a card block 62 is installed on the outer circumference of the card plate 61. The position of the card block 62 matches the positioning groove. When the card plate 61 is installed, the card block 62 can be inserted into the positioning groove to limit and fix the installed card plate 61, thereby improving the stability and protective effect of the card plate 61 and reducing the probability of external impurities entering the roller.

[0034] The clamping block 62 is a dovetail structure.

[0035] Specifically, the block 62 is a dovetail structure, and the matching positioning groove is also a dovetail structure, so that when the card plate 61 is installed, the block 62 can be inserted into the positioning groove, making the installed card plate 61 more stable and improving its protective effect.

[0036] The number of the plurality of clamping plates 61 is two.

[0037] Specifically, there are two card plates 61 , both of which are semi-annular structures. The two card plates 61 are spliced ​​together and installed on one side of the outer ring 1 and the inner ring 2 , which facilitates the installation and disassembly of the card plates 61 and the card blocks 62 .

[0038] The outer ring 1 and the inner ring 2 are made of No. 45 steel.

[0039] Specifically, the outer ring 1 and the inner ring 2 are both made of No. 45 steel and have all the properties of No. 45 steel.

[0040] according to Figure 1-3 As shown, the second aspect of the present application proposes a transmission device, including: a mounting frame 7, a drive shaft 8, a transmission shaft 9, a first gear 10, a second gear 11 and a water-lubricated bearing as any one of the embodiments in the first aspect, the drive shaft 8 and the transmission shaft 9 are arranged on the mounting frame 7 through the water-lubricated bearing, the first gear 10 is arranged on the drive shaft 8, a plurality of second gears 11 are arranged on the transmission shaft 9, and at least one second gear 11 is meshedly connected with the first gear 10.

[0041] Since the transmission device provided in the present application includes a water-lubricated bearing as in any technical solution in the first aspect, it has all the beneficial effects of the above-mentioned water-lubricated bearings, which will not be described one by one here.

[0042] Specifically, a plurality of mounting holes are provided on the mounting frame 7, water-lubricated bearings are installed in the mounting holes, the drive shaft 8 and the transmission shaft 9 are installed in the mounting holes by lubricating the bearings, the drive shaft 8 and the transmission shaft 9 are vertically arranged, the first gear 10 is installed on the drive shaft 8, and a plurality of second gears 11 are installed on the transmission shaft 9, wherein at least one second gear 11 is connected to the first gear 10, and when the drive shaft 8 rotates, the transmission shaft 9 can be driven to rotate through the first gear 10 and the second gear 11, thereby realizing the transmission function.

[0043] The first gear 10 and the second gear 11 are both bevel gears, which facilitates the connection between the first gear 10 and the second gear 11 .

[0044] The number of the plurality of second gears 11 is two, and the two second gears 11 are mirror-imaged on the transmission shaft 9 .

[0045] The transmission shaft 9 is provided with a latching key 12 , and the plurality of second gears 11 are respectively provided with positioning members 13 , and the positioning members 13 can be detachably provided on the outer wall of the latching key 12 .

[0046] Specifically, the key 12 is arranged along the axial direction of the transmission shaft 9, and the two second gears 11 are installed on the transmission shaft 9 in a mirror-image manner. The key 12 can fix the second gear 11 to prevent it from rotating on the transmission shaft 9; the positioning member 13 is installed on the second gear 11, and the positioning member 13 can fix the second gear 11 on the transmission shaft 9 to prevent it from sliding during use; in use, the first gear 10 is meshed with one of the two second gears 11 to meet the use requirements. When the second gear 11 meshed with the first gear 10 is damaged and fails, it can be moved to one side and fixed by the positioning member 13, and the other second gear 11 can be slid to a position where it can be meshed with the first gear 10, and then fixed by the positioning member 13. In this way, the transmission device has a backup function when in use, thereby improving its practicality.

[0047] The positioning member 13 is a positioning bolt.

[0048] Specifically, the positioning member 13 is a positioning bolt, and the positioning member 13 can be fixed or loosened by rotating the positioning member 13, so that the position thereof can be adjusted conveniently to realize the function of standby use.

[0049] The mounting frame 7 is a U-shaped structure.

[0050] Specifically, the mounting frame 7 is a U-shaped structure, which is convenient for the installation of the drive shaft 8 and the transmission shaft 9 and is more convenient for transmission.

[0051] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A water-lubricated bearing, characterized in that: include: An outer ring (1), an inner ring (2), a first limiting groove (3), a second limiting groove (4), a ball (5), a base layer (51), an outer layer (52) and a protective element (6); The inner ring (2) is arranged on the inner side of the outer ring (1); a first limiting groove (3) is provided on the inner wall of the outer ring (1); a second limiting groove (4) is provided on the outer wall of the inner ring (2); a plurality of balls (5) are arranged between the first limiting groove (3) and the second limiting groove (4); a base layer (51) and an outer layer (52) are provided on the outer wall of the balls (5); both the base layer (51) and the outer layer (52) are ceramic coatings; the protective element (6) is arranged between the outer ring (1) and the inner ring (2) and is located on both sides of the balls (5).

2. The water-lubricated bearing according to claim 1, characterized in that: The protective element (6) comprises: a clamping plate (61) and a clamping block (62); A plurality of the clamping plates (61) are arranged between the outer ring (1) and the inner ring (2); a positioning groove is provided on the side wall of the outer ring (1); and a clamping block (62) is provided on each of the clamping plates (61) at a position matching the positioning groove.

3. The water-lubricated bearing according to claim 2, characterized in that: The clamping block (62) is a dovetail structure.

4. The water-lubricated bearing according to claim 3, characterized in that: The number of the plurality of clamping plates (61) is two.

5. The water-lubricated bearing according to claim 4, characterized in that: The outer ring (1) and the inner ring (2) are made of No. 45 steel.

6. A transmission device, characterized in that: include: A mounting frame (7), a drive shaft (8), a transmission shaft (9), a first gear (10), a second gear (11) and a water-lubricated bearing as described in any one of claims 1 to 5, wherein the drive shaft (8) and the transmission shaft (9) are arranged on the mounting frame (7) through the water-lubricated bearing, the first gear (10) is arranged on the drive shaft (8), a plurality of second gears (11) are arranged on the transmission shaft (9), and at least one second gear (11) is meshedly connected with the first gear (10).

7. The transmission device according to claim 6, characterized in that: The number of the plurality of second gears (11) is two, and the two second gears (11) are mirror-imaged on the transmission shaft (9).

8. The transmission device according to claim 7, characterized in that: The transmission shaft (9) is provided with a latch key (12), and a plurality of second gears (11) are respectively provided with positioning members (13), wherein the positioning members (13) can be detachably arranged on the outer wall of the latch key (12).

9. The transmission device according to claim 8, characterized in that: The positioning member (13) is a positioning bolt.

10. The transmission device according to claim 9, characterized in that: The mounting frame (7) is a U-shaped structure.

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