Special bearing for motorcycle crankshaft

Abstract

The utility model relates to the technical field of bearings, and discloses a special bearing for a motorcycle crankshaft, which comprises two sealing covers, an outer cylinder is arranged in the upper sealing cover, a pull block is arranged at the upper part of the outer cylinder, the bottom of the pull block is fixedly connected with a connecting rod, and a spring is arranged outside the connecting rod. A movable plug is fixedly connected to one end of the connecting rod, a sealing plug is fixedly connected to the bottom of the movable plug, mounting assemblies are fixedly connected to the left side and the right side of the exterior of the outer cylinder, a mounting groove is formed in the upper side of the interior of the upper sealing cover, and the mounting assemblies and the outer cylinder are slidably connected to the interior of the mounting groove; the mounting assembly comprises a fixing plate, and a bolt is arranged in the fixing plate. According to the utility model, the bearing can be quickly and conveniently mounted, the working efficiency is improved, dust is prevented from entering the oil injection groove, and the dust is prevented from entering the bearing and adhering to influence the use and shorten the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a special bearing for a motorcycle crankshaft. Background Art

[0002] A special bearing for a motorcycle crankshaft is a key component used to support the crankshaft and reduce friction. The crankshaft is an important part of the engine, responsible for converting the up-and-down movement of the piston into rotational power to drive the wheels. The crankshaft bearing is responsible for supporting and positioning the crankshaft and ensuring its smooth rotation without excessive friction and wear.

[0003] The existing bearing has the function of storing lubricating oil through an oil groove provided at the bottom of the cage ball pocket to ensure good lubrication of the bearing. However, the oil injection port is prone to falling dust, and the dust entering the interior of the oil injection port is likely to adhere inside the bearing and affect its use. Therefore, a special bearing for a motorcycle crankshaft is proposed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a special bearing for a motorcycle crankshaft to solve the disadvantages in the prior art that the oil injection port is prone to falling dust, and the dust entering the interior of the oil injection port is likely to adhere inside the bearing and affect its use.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A special bearing for a motorcycle crankshaft includes two end covers. An outer cylinder is arranged inside the upper end cover. A pull block is arranged on the upper part of the outer cylinder. A connecting rod is fixedly connected to the bottom of the pull block. A spring is arranged outside the connecting rod. One end of the connecting rod is fixedly connected to a moving plug. A sealing plug is fixedly connected to the bottom of the moving plug. Installation components are fixedly connected to both the left and right sides outside the outer cylinder. An installation groove is formed in the upper side inside the upper end cover. The installation components and the outer cylinder are both slidably connected inside the installation groove.

[0006] As a further description of the above technical scheme:

[0007] The installation component includes a fixing plate. A bolt is arranged inside the fixing plate. An installation hole is formed in the upper side inside the fixing plate. The bolt is threadedly connected inside the installation hole. The bolt is threadedly connected to the inside of the end cover through the installation hole.

[0008] As a further description of the above technical scheme:

[0009] Blocks are fixedly connected to both sides of the end cover. An inner ring is arranged inside the end cover. An outer ring is arranged outside the end cover. Card slots are formed in the upper and lower sides of the corresponding inner sides inside the outer ring and the inner ring. The blocks are snap-fitted inside the card slots. Ball grooves are formed in the corresponding inner sides inside the outer ring and the inner ring.

[0010] As a further description of the above technical solution:

[0011] A cage is arranged between the outer ring and the inner ring, a ball body is arranged inside the cage, and the ball body is arranged inside a ball groove.

[0012] As a further description of the above technical solution:

[0013] A lubricating groove is arranged between the outer ring and the inner ring.

[0014] As a further description of the above technical solution:

[0015] One end of the spring is fixedly connected to the top of the inner wall of the outer cylinder, and the other end of the spring is fixedly connected to the upper part of the moving plug.

[0016] As a further description of the above technical solution:

[0017] The moving plug is slidably connected inside the outer cylinder.

[0018] As a further description of the above technical solution:

[0019] An oil injection groove is opened at the bottom of the installation groove, and both the moving plug and the sealing plug are slidably connected inside the oil injection groove.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, by installing the ball body and the cage inside the ball groove, inserting the two covers into the clamping grooves on the inner ring through the internal clamping blocks, and aligning the clamping grooves on the outer ring with the external clamping blocks of the covers to connect and fix them with the covers, the installation of the bearing is realized quickly and conveniently, and the working efficiency is improved.

[0022] 2. In the utility model, by inserting the fixing plate and the outer cylinder into the installation groove, under the action of the spring, the moving plug and the sealing plug are driven to move out of the outer cylinder and inserted into the oil injection groove, so as to prevent dust from entering the inside of the oil injection groove, avoid dust from entering the inside of the bearing and adhering to affect the use, and reduce the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional view of a special bearing for a motorcycle crankshaft proposed by the utility model;

[0024] Figure 2 is a sectional view of a special bearing for a motorcycle crankshaft proposed by the utility model;

[0025] Figure 3 is a partial structural schematic diagram of a special bearing for a motorcycle crankshaft proposed by the utility model;

[0026] Figure 4 is Figure 3 an enlarged view of part A

[0027] Legend:

[0028] 1. Outer ring; 2. Sealing cover; 3. Inner ring; 4. Pulling block; 5. Outer cylinder; 6. Clamping block; 7. Card slot; 8. Ball groove; 9. Ball body; 10. Cage; 11. Lubricating groove; 12. Installation groove; 13. Oil injection groove; 14. Fixed plate; 15. Installation hole; 16. Bolt; 17. Connecting rod; 18. Spring; 19. Moving plug; 20. Sealing plug. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Referring to Figure 1 , Figure 3 , Figure 4 , an embodiment provided by the present invention: a special bearing for a motorcycle crankshaft, including two sealing covers 2. An outer cylinder 5 is arranged inside the upper sealing cover 2. A pulling block 4 is arranged on the upper part of the outer cylinder 5. The bottom of the pulling block 4 is fixedly connected to a connecting rod 17. A spring 18 is arranged outside the connecting rod 17. One end of the connecting rod 17 is fixedly connected to a moving plug 19. The bottom of the moving plug 19 is fixedly connected to a sealing plug 20. Installation components are fixedly connected to both the left and right sides outside the outer cylinder 5. An installation groove 12 is opened on the upper side inside the upper sealing cover 2. The installation components and the outer cylinder 5 are both slidably connected inside the installation groove 12. One end of the spring 18 is fixedly connected to the top of the inner wall of the outer cylinder 5, and the other end of the spring 18 is fixedly connected to the upper part of the moving plug 19. The moving plug 19 is slidably connected inside the outer cylinder 5. An oil injection groove 13 is opened at the bottom of the installation groove 12. The moving plug 19 and the sealing plug 20 are both slidably connected inside the oil injection groove 13;

[0031] The installation component includes a fixed plate 14. A bolt 16 is arranged inside the fixed plate 14. An installation hole 15 is opened on the upper side inside the fixed plate 14. The bolt 16 is threadedly connected inside the installation hole 15, and the bolt 16 is threadedly connected to the inside of the sealing cover 2 through the installation hole 15.

[0032] The fixing plate 14 and the outer cylinder 5 are inserted into the inside of the installation groove 12, the bolt 16 is inserted into the inside of the installation hole 15, and it is rotated and screwed into the inside of the upper cover 2 for installation and fixation. When the outer cylinder 5 is inserted into the inside of the installation groove 12, the movable plug 19 and the sealing plug 20 are inserted into the inside of the oil injection groove 13. The shape of the oil injection groove 13 is convex. After the movable plug 19 is inserted into the oil injection groove 13, the spring 18 is squeezed, so that the pulling block 4 slides in the outer cylinder 5 through the connecting rod 17 and moves, so that the spring 18 generates a resilience force to tightly press the movable plug 19 inside the oil injection groove 13, which plays a role in preventing dust from entering the inside of the oil injection groove 13, avoiding dust from entering the bearing and adhering to affect the use, and reducing the service life.

[0033] Refer to Figure 1 、 Figure 2 On both sides of the cover 2, there are fixedly connected clamping blocks 6. An inner ring 3 is arranged inside the cover 2, and an outer ring 1 is arranged outside the cover 2. On the inner sides of the outer ring 1 and the inner ring 3 corresponding to each other, clamping grooves 7 are respectively opened at the upper and lower positions. The clamping blocks 6 are clamped and connected inside the clamping grooves 7. On the inner sides of the outer ring 1 and the inner ring 3 corresponding to each other, ball grooves 8 are respectively opened;

[0034] A cage 10 is arranged between the outer ring 1 and the inner ring 3. A ball body 9 is arranged inside the cage 10. The ball body 9 is arranged inside the ball groove 8. A lubrication groove 11 is arranged between the outer ring 1 and the inner ring 3.

[0035] By installing the ball body 9 and the cage 10 inside the ball groove 8, aligning the clamping blocks 6 inside the two covers 2 with the clamping grooves 7 on the inner ring 3, aligning the clamping grooves 7 on the outer ring 1 with the outer clamping blocks 6 of the cover 2, and pressing it so that the clamping blocks 6 are inserted into the inside of the clamping grooves 7, the cover 2 is connected and fixed with the outer ring 1 and the inner ring 3, which plays a role in quickly and conveniently installing the bearing, improving the work efficiency. The lubricating oil enters the inside of the lubrication groove 11 through the oil injection groove 13 to lubricate the ball body 9.

[0036] Working principle: When the device needs to be used, by installing the ball body 9 and the cage 10 inside the ball groove 8, inserting the two covers 2 into the clamping grooves 7 on the inner ring 3 through the inner clamping blocks 6, and aligning the clamping grooves 7 on the outer ring 1 with the outer clamping blocks 6 of the cover 2 to connect and fix it with the cover 2, the bearing can be quickly and conveniently installed, improving the work efficiency; after the lubricating oil is added, by inserting the fixing plate 14 and the outer cylinder 5 into the inside of the installation groove 12, under the action of the spring 18, the movable plug 19 and the sealing plug 20 are driven to move out of the outer cylinder 5 and inserted into the inside of the oil injection groove 13, which realizes preventing dust from entering the inside of the oil injection groove 13, avoiding dust from entering the bearing and adhering to affect the use, and reducing the service life.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Motorcycle crankshaft special bearing, including two end covers (2), characterized in that: Inside the upper cover (2) described above, an outer cylinder (5) is provided. At the upper part of the outer cylinder (5), a pulling block (4) is provided. At the bottom of the pulling block (4), a connecting rod (17) is fixedly connected. Outside the connecting rod (17), a spring (18) is provided. At one end of the connecting rod (17), a moving plug (19) is fixedly connected. At the bottom of the moving plug (19), a sealing plug (20) is fixedly connected. On the left and right sides of the outside of the outer cylinder (5), mounting components are fixedly connected. On the upper side inside the upper cover (2), a mounting groove (12) is opened. The mounting components and the outer cylinder (5) are both slidably connected inside the mounting groove (12).

2. The special bearing for motorcycle crankshaft according to claim 1, characterized in that: The mounting component includes a fixing plate (14). Inside the fixing plate (14), a bolt (16) is provided. At the upper side inside the fixing plate (14), a mounting hole (15) is opened. The bolt (16) is threadedly connected inside the mounting hole (15). The bolt (16) is threadedly connected to the inside of the cover (2) through the mounting hole (15).

3. The special bearing for motorcycle crankshaft according to claim 1, characterized in that: On both sides of the cover (2), clamping blocks (6) are fixedly connected. Inside the cover (2), an inner ring (3) is provided. Outside the cover (2), an outer ring (1) is provided. On the upper and lower sides of the corresponding sides inside the outer ring (1) and the inner ring (3), clamping grooves (7) are opened. The clamping blocks (6) are snap-connected inside the clamping grooves (7). On the corresponding sides inside the outer ring (1) and the inner ring (3), ball grooves (8) are opened.

4. The special bearing for motorcycle crankshaft according to claim 3, wherein: Between the outer ring (1) and the inner ring (3), a cage (10) is provided. Inside the cage (10), a ball body (9) is provided. The ball body (9) is arranged inside the ball groove (8).

5. The special bearing for motorcycle crankshaft according to claim 3, characterized in that: Between the outer ring (1) and the inner ring (3), a lubricating groove (11) is provided.

6. The special bearing for motorcycle crankshaft according to claim 1, characterized in that: One end of the spring (18) is fixedly connected to the top of the inner wall of the outer cylinder (5). The other end of the spring (18) is fixedly connected to the upper part of the moving plug (19).

7. The special bearing for motorcycle crankshaft according to claim 1, wherein: The moving plug (19) is slidably connected inside the outer cylinder (5).

8. The special bearing for motorcycle crankshaft according to claim 1, characterized in that: At the bottom of the mounting groove (12), an oil injection groove (13) is opened. The moving plug (19) and the sealing plug (20) are both slidably connected inside the oil injection groove (13).

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