Bearing ring provided with lubricating mechanism

Abstract

The bearing ring provided with the lubricating mechanism comprises an inner ring and an outer ring, an inner raceway is arranged on the inner ring surface of the outer ring, through holes are formed in the outer ring, the through holes comprise a piston hole and an installation hole, a limiting plate is arranged in the piston hole, a piston is arranged in the piston hole, the inner end of the piston is connected with the limiting plate through a spring, and an oil inlet pipe is arranged at the outer end of the piston. The oil inlet pipe penetrates through the mounting hole, a sealing ring is arranged between the oil inlet pipe and the mounting hole, and an oil outlet is formed in the inner end of the pipe wall of the oil inlet pipe; the outer ring is provided with an oil storage cavity between the piston hole and the inner raceway, the hole wall of the piston hole is provided with an oil passing hole communicated with the oil storage cavity, the piston shields and blocks the oil passing hole, and the surface of the inner raceway is provided with an oil outlet communicated with the oil storage cavity. According to the structure, oil injection operation convenience is improved, meanwhile, the oil inlet pipe is provided with the sealing ring, and the good sealing effect on lubricating oil in the bearing is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing lubricating technical field, especially a kind of bearing ring of setting lubricating mechanism. BACKGROUND

[0002] Bearing is widely used in various mechanical equipment, for supporting equipment on mechanical rotating parts, bearing can reduce the friction coefficient of equipment in transmission process, ensure its rotation accuracy.

[0003] Bearing includes bearing ring, i. e. inner ring and outer ring, and rolling element, the outer ring surface of inner ring, the inner ring surface of outer ring is equipped with raceway respectively, rolling element is installed in raceway, lubricating oil is equipped in bearing, to form oil film between rolling element and raceway, avoid metal piece direct contact, reduce friction and wear, improve bearing running stability.

[0004] At present, bearing lubricating mechanism is mostly set in outer ring, oil storage cavity is set in outer ring, and for the purpose of injecting lubricating oil into bearing in time, oil inlet of oil storage cavity is mostly opened in outer ring end face, sealing ball is installed in oil storage cavity through spring, and sealing ball top seals oil inlet.When injecting oil, the oil nozzle of oil can is pressed against sealing ball, so that it is separated from oil inlet, and the oil nozzle injects oil into oil storage cavity, sometimes, due to the phenomenon that sealing ball surface blocks oil outlet of oil nozzle, oil injection is difficult, oil nozzle position needs to be adjusted to re-operate, which brings inconvenience to oil injection operation. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at providing a kind of bearing ring of setting lubricating mechanism to facilitate injecting lubricating oil into bearing and improve bearing lubricating and sealing effect.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A kind of bearing ring of setting lubricating mechanism, including inner ring and outer ring, the outer ring surface of inner ring is equipped with outer raceway, and the inner ring surface of outer ring is equipped with inner raceway, the inner part of outer ring and the position of inner raceway outer side are equipped with through hole, the center line of through hole and the center line of outer ring are parallel, and through hole includes piston hole and mounting hole, wherein the end of piston hole away from mounting hole is equipped with limit plate, piston is arranged in piston hole, the inner end of piston is connected by spring and limit plate, the outer end of piston is equipped with oil inlet pipe, the oil inlet pipe is passed through mounting hole, sealing ring is arranged between oil inlet pipe and mounting hole, and oil outlet hole is opened in the inner end of oil inlet pipe wall;

[0008] The position between piston hole and inner raceway of outer ring is equipped with oil storage cavity, the oil hole, which is communicated with oil storage cavity, is opened in the wall of piston hole, and the oil hole is blocked by piston, and the oil outlet, which is communicated with oil storage cavity, is opened in the surface of inner raceway.

[0009] Further, the through hole further comprises a positioning hole and a sealing hole, the positioning hole, the piston hole, the mounting hole and the sealing hole are sequentially arranged, the hole diameter of the sealing hole is larger than the hole diameter of the mounting hole, the hole diameter of the positioning hole is larger than the hole diameter of the piston hole, and the positioning hole is a threaded hole;

[0010] The limiting plate is arranged in the positioning hole, the limiting plate is tightly attached to a step surface formed between the positioning hole and the piston hole, the positioning hole is matched with a screw, and the screw tightly presses the limiting plate.

[0011] The outer port of the oil inlet pipe extends into the sealing hole, and the sealing hole is sealed by a cover.

[0012] Further, the cover is a rubber cover.

[0013] Further, the outer port of the oil inlet pipe is a tapered port.

[0014] Further, the piston abuts against a step surface formed between the piston hole and the mounting hole.

[0015] Further, two sealing rings are arranged on the oil inlet pipe, one of the sealing rings is arranged close to the oil outlet hole, and when the piston moves away and the oil passing hole is exposed, the sealing ring is still located in the mounting hole.

[0016] Further, a clamping ring is arranged on the outer end of the oil inlet pipe, and when the piston moves away and the oil passing hole is exposed, the clamping ring abuts against a step surface formed between the sealing hole and the mounting hole.

[0017] Further, the limiting plate and the piston are respectively provided with limiting columns corresponding to springs, and the two ends of the spring are sleeved on the limiting columns.

[0018] Compared with the prior art, the bearing sleeve provided with the lubricating mechanism has the following advantages:

[0019] (1) In the structure of the utility model, the piston and the oil inlet pipe are arranged, when the bearing normally operates, the piston blocks the oil passing hole of the oil storage cavity to seal the lubricating oil in the oil storage cavity; when oil is injected, the oil nozzle of the oil can is inserted into the oil inlet pipe, and the oil inlet pipe is pushed inward, so that the oil passing hole is exposed, oil is injected into the oil storage cavity through the oil inlet pipe, the oil injection operation convenience is improved, and the oil inlet pipe is provided with a sealing ring, so that the lubricating oil in the bearing is well sealed.

[0020] (2) In the utility model, the oil storage cavity is arranged outside the outer ring inner raceway, and is communicated with the inner raceway through the oil outlet, so that an oil film is formed on the contact surface between the bearing ball and the inner raceway, and the lubricating effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0022] Figure 1 This is a schematic diagram of a bearing ring structure with a lubrication mechanism according to an embodiment of the present utility model;

[0023] Figure 2 This is an enlarged schematic diagram of the lubrication mechanism in an embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the bearing outer ring structure in this embodiment;

[0025] Figure 4 This is a diagram showing the state of lubricating oil being injected into the bearing in this embodiment;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Inner ring; 2-Outer ring; 21-Oil reservoir; 22-Positioning hole; 23-Piston hole; 24-Mounting hole; 25-Sealing hole; 26-Inner raceway; 27-Oil outlet; 28-Oil passage hole; 3-Ball; 4-Screw; 5-Limiting plate; 6-Spring; 7-Piston; 8-Oil inlet pipe; 81-Oil outlet hole; 9-Cap; 10-Limiting post; 11-Sealing ring; 12-Snap ring. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 , Figure 2 As shown, a bearing ring with a lubrication mechanism includes an inner ring 1 and an outer ring 2. The outer ring surface of the inner ring 1 is provided with an outer raceway, and the inner ring surface of the outer ring 2 is provided with an inner raceway 26. The cross-sections of the outer raceway and the inner raceway 26 are both circular arc groove structures. The outer raceway and the inner raceway 26 face each other to form a space for the installation and movement of the balls. The balls 3 in the bearing are installed in this space. A lubrication mechanism is provided on the outer ring 2.

[0030] Outer ring 2 structure as follows Figure 3As shown, a through hole is formed in the inner part, i.e. in the entity and at a position outside the inner raceway 26, the center line of the through hole is parallel to the center line of the outer ring 2, and the through hole comprises a positioning hole 22, a piston hole 23, a mounting hole 24 and a sealing hole 25 arranged in sequence, wherein the positioning hole 22 is a threaded hole, and the positioning hole 22 and the sealing hole 25 respectively pass through the end face of the outer ring 2. The hole diameter of the sealing hole 25 is larger than the hole diameter of the mounting hole 24, the hole diameter of the mounting hole 24 < the hole diameter of the piston hole 23 < the hole diameter of the positioning hole 22, and a stepped surface is respectively formed at the connection position of the sealing hole 25 and the mounting hole 24, the connection position of the mounting hole 24 and the piston hole 23, and the connection position of the piston hole 23 and the positioning hole 22, and the connection position of the mounting hole 24 and the piston hole 23 in the axial direction is close to the middle position of the outer ring 2. An oil storage cavity 21 is arranged between the through hole and the inner raceway 26 in the inner part of the outer ring 2, and the oil storage cavity 21 is preferably an annular cavity structure arranged concentrically with the outer ring, and the oil storage cavity 21 is located at the middle position of the outer ring in the axial direction. An oil passing hole 28 is formed in the wall of the piston hole 23 and communicates with the oil storage cavity 21, and an oil outlet 27 is formed in the groove bottom of the inner raceway 26 and communicates with the oil storage cavity 21.

[0031] A limiting plate 5 is arranged in the positioning hole 22, the limiting plate 5 abuts against the stepped surface formed between the positioning hole 22 and the piston hole 23, the positioning hole 22 matches a screw 4, the screw 4 tightly presses the limiting plate 5, and the limiting plate 5 also plays a sealing role of the piston hole 23. A piston 7 is arranged in the piston hole 23, the piston 7 abuts against the stepped surface formed between the piston hole 23 and the mounting hole 24, the piston 7 blocks and plugs the oil passing hole 28, the inner end of the piston 7 and the end opposite to the limiting plate are connected through the spring 6 and the limiting plate 5, and an oil inlet pipe 8 is arranged at the outer end of the piston 7. An oil outlet hole 81 is formed in the inner end of the wall of the oil inlet pipe 8, the oil inlet pipe 8 passes through the mounting hole 24, and the outer end port of the oil inlet pipe 8 extends into the sealing hole 25. The outer end port of the oil inlet pipe 8 is a tapered port, so as to facilitate the insertion and fixing of the oil outlet port of an oil can. A sealing ring 11 is arranged between the oil inlet pipe 8 and the mounting hole 24, the sealing hole 25 matches a cover 9, the cover 9 is preferably a rubber cover, the cover 9 is usually buckled at the port of the sealing hole 25 to seal the sealing hole, so that the lubricating structure is kept clean, and the outer end port of the oil inlet pipe 8 is protected, so that the dust and other impurities in the external environment cannot enter the oil inlet pipe 8, and the lubricating oil is ensured to be clean. When it is necessary to supplement the lubricating oil for the bearing, the cover 9 is opened, and the lubricating oil is injected through the oil inlet pipe 8.

[0032] In the utility model, the through hole can be circumferentially and uniformly arranged more than two, preferably four. The oil outlet 27 can also be circumferentially and uniformly arranged more than two, for example, 4-8, and the position of the oil outlet 27 can not be coaxial with the position of the oil passing hole 28, for example, the position of the oil outlet 27 and the position of the oil passing hole 28 can be staggered. During operation, the oil inlet structure arranged in each through hole can be used to inject lubricating oil into the oil storage cavity 21, and the lubricating oil in the oil storage cavity 21 finally enters the inner raceway and lubricates the bearing through the oil outlet 27.

[0033] In this invention, two sealing rings 11 are installed one in front of the other on the oil inlet pipe 8. One of the sealing rings 11 is located near the oil outlet hole 81. When the piston 7 moves away, the oil passage hole 28 is exposed, and the oil outlet hole 81 enters the piston hole 23, the sealing ring 11 remains within the mounting hole 24. The two sealing rings 11 provide stable support for the oil inlet pipe and also serve a sealing function. During the lubrication oil injection operation, when the piston 7 moves away from the oil passage hole 28, the oil outlet hole 81 of the oil inlet pipe 8 enters the piston hole 23, and the oil outlet hole 81 is in the piston hole 23, the sealing ring 11 near the oil outlet hole 81 remains within the mounting hole 24. This minimizes the lubrication oil injection and sealing space, preventing lubrication oil from entering the space between the two sealing rings 11 and wasting lubrication oil.

[0034] In this utility model, a retaining ring 12 is provided at the outer end of the oil inlet pipe 8, that is, at the part where it extends into the sealing hole 25. When the piston 7 is moved away, the oil passage hole 28 is exposed, and the oil outlet hole 81 enters the piston hole 23, the retaining ring 12 abuts against the stepped surface formed by the sealing hole 25 and the mounting hole 24, making it easy for the operator to determine that lubricating oil can be injected into the bearing at this time.

[0035] In this utility model, the limiting plate 5 and the piston 7 are respectively provided with limiting posts 10 corresponding to the spring 6, and the two ends of the spring 6 are fitted onto the limiting posts 10.

[0036] The operation process of this utility model is as follows: When lubricating oil needs to be injected into the bearing, remove the cap 9, insert the oil outlet of the oil can containing lubricating oil into the outer port of the oil inlet pipe 8, push the oil can to move the oil inlet pipe 8 inward, and the oil inlet pipe 8 drives the piston 7 to move towards the limiting plate 5 until the retaining ring 12 abuts against the stepped surface formed by the sealing hole 25 and the mounting hole 24, indicating that the piston 7 has moved away from the position of the oil passage hole 28, and the oil passage hole 28 is exposed. At the same time, the oil outlet 81 of the oil inlet pipe 8 enters the piston hole 23. Figure 4 As shown, at this time, the piston 7 and the sealing ring 11 near the oil outlet 81 form an oil filling space connected to the oil storage chamber 21. If the oil can is manually squeezed or pressed out, the oil can can be squeezed or pressed to inject oil into the oil filling space through the oil inlet pipe 8; if the oil can is automatically pumped out, the pump can be turned on to inject oil into the oil filling space. The lubricating oil in the oil filling space enters the oil storage chamber 21 through the oil hole 28, and then enters the inner raceway 26 through the oil outlet 27. Later, with the rotation of the inner ball 3 of the bearing, an oil film is formed between the inner raceway 26 of the ball 3 and the outer raceway 26 of the outer ring 2, and between the ball 3 and the outer raceway of the inner ring 1, to lubricate. After the oil filling is completed, the oil can is removed. Under the action of the spring force of the spring 6, the piston 7 and the oil inlet pipe 8 are reset. The piston 7 blocks and seals the oil outlet 28, and the outer end of the oil inlet pipe 8 enters the sealing hole. The cap 9 is then put back on to seal the sealing hole, completing the injection of lubricating oil.

[0037] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bearing ring provided with a lubricating mechanism, comprising an inner ring (1) and an outer ring (2), the outer ring face of the inner ring (1) is provided with an outer raceway, the inner ring face of the outer ring (2) is provided with an inner raceway (26), characterized in that: The outer ring (2) is internally provided with a through hole, the center line of the through hole is parallel to the center line of the outer ring (2), the through hole comprises a piston hole (23) and a mounting hole (24), one end of the piston hole (23) away from the mounting hole (24) is provided with a limiting plate (5), a piston (7) is arranged in the piston hole (23), the inner end of the piston (7) is connected with the limiting plate (5) through a spring (6), and an oil inlet pipe (8) is arranged at the outer end of the piston (7); the oil inlet pipe (8) passes through the mounting hole (24), a sealing ring (11) is arranged between the oil inlet pipe (8) and the mounting hole (24), and an oil outlet hole (81) is formed in the inner end of the wall of the oil inlet pipe (8). The outer ring (2) is provided with an oil storage cavity (21) between the piston hole (23) and the inner raceway (26), the wall of the piston hole (23) is provided with an oil passing hole (28) communicating with the oil storage cavity (21), the oil passing hole (28) is blocked by the piston (7), and the surface of the inner raceway (26) is provided with an oil outlet (27) communicating with the oil storage cavity (21).

2. A bearing ring provided with a lubricating mechanism according to claim 1, characterized in that: The through hole further comprises a positioning hole (22) and a sealing hole (25), the positioning hole (22), the piston hole (23), the mounting hole (24) and the sealing hole (25) are sequentially arranged, the diameter of the sealing hole (25) is greater than that of the mounting hole (24), the diameter of the positioning hole (22) is greater than that of the piston hole (23), and the positioning hole (22) is a threaded hole. The limiting plate (5) is arranged in the positioning hole (22) and abuts against the stepped surface formed between the positioning hole (22) and the piston hole (23), the positioning hole (22) is matched with a screw (4), and the screw (4) tightly presses the limiting plate (5). The outer end of the oil inlet pipe (8) extends into the sealing hole (25), and the sealing hole (25) is sealed by a cover (9).

3. A bearing ring provided with a lubricating mechanism according to claim 2, characterized in that: The cover (9) is a rubber cover.

4. The bearing ring provided with a lubricating mechanism according to claim 1, characterized in that: The outer end of the oil inlet pipe (8) is a tapered port.

5. The bearing ring provided with a lubricating mechanism according to claim 1, characterized in that: The piston (7) abuts against the stepped surface formed between the piston hole (23) and the mounting hole (24).

6. The bearing ring provided with a lubricating mechanism according to claim 1, characterized in that: Two sealing rings (11) are arranged on the oil inlet pipe (8), one of the sealing rings (11) is arranged close to the oil outlet hole (81), and when the piston (7) moves away and the oil passing hole (28) is exposed, the sealing ring (11) is still located in the mounting hole (24).

7. The bearing ring provided with a lubricating mechanism according to claim 1, characterized in that: A clamping ring (12) is arranged at the outer end of the oil inlet pipe (8), and when the piston (7) moves away and the oil passing hole (28) is exposed, the clamping ring (12) abuts against the stepped surface formed between the sealing hole (25) and the mounting hole (24).

8. The bearing ring provided with a lubricating mechanism according to claim 1, characterized in that: The limiting plate (5) and the piston (7) are respectively provided with a limiting column (10) corresponding to the spring (6), and the spring (6) is sleeved on the limiting column (10).

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