Bearing convenient to add lubricating oil

Abstract

The bearing comprises an inner ring, an outer ring, a rolling body and a retainer, annular sealing covers are arranged on the two sides of the retainer, the sealing covers are arranged between the inner ring and the outer ring in a sleeved mode, the sealing covers, the inner ring and the outer ring surround the two sides of the retainer to form oil storage cavities, oil injection openings are formed in the sealing covers, and the oil injection openings are communicated with the oil storage cavities. A closing mechanism used for isolating the oil filling port from the oil storage cavity is arranged in the oil storage cavity, the sealing cover is arranged between the inner ring and the outer ring in a front-back sliding mode and is in linkage with the closing mechanism, and the sealing cover changes the communication condition between the oil filling port and the oil storage cavity through front-back sliding. According to the structure, the operation step of adding lubricating oil to the bearing can be simplified, other tools are not needed, the structure is relatively simple and rapid, meanwhile, the large area of the internal structure of the bearing cannot be exposed, and therefore the probability that impurities enter the bearing can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a bearing which is convenient for adding lubricating oil. Background Art

[0002] At present, most bearings are equipped with dust covers between the inner ring and the outer ring. When the bearing needs to be lubricated, it is necessary to first pry out the dust cover with the help of tools, and then drip the lubricating oil into the bearing. However, this operation is troublesome and requires the use of other tools. In addition, people may apply improper force when prying the dust cover, causing the dust cover to be damaged. When the dust cover is opened, the inside of the bearing will be exposed to a large area, which makes it easy for dust and impurities to enter the bearing. Utility Model Content

[0003] The utility model provides a bearing which is convenient for adding lubricating oil, and solves the above-mentioned problems existing in the use process of the prior art.

[0004] The technical solution of the utility model is achieved as follows: a bearing that is easy to add lubricating oil, comprising an inner ring, an outer ring, rolling elements and a retaining frame, annular sealing covers are arranged on both sides of the retaining frame, the sealing cover is sleeved between the inner ring and the outer ring, the sealing cover, the inner ring and the outer ring are surrounded by an oil storage cavity on both sides of the retaining frame, an oil filling port is opened on the sealing cover, a closing mechanism for isolating the oil filling port from the oil storage cavity is arranged in the oil storage cavity, the sealing cover is slidably arranged between the inner ring and the outer ring and is linked to the closing mechanism, the sealing cover changes the communication between the oil filling port and the oil storage cavity by sliding back and forth, and a detachable oil plug is arranged at the oil filling port.

[0005] The utility model is further configured as follows: a sealing cover limiting mechanism is arranged on the outer ring, and the sealing cover limiting mechanism is used to enable the sealing cover to maintain a sliding contact relationship with the inner ring and the outer ring.

[0006] The utility model is further configured as follows: an annular sealing plate is provided on the side wall of the sealing cover extending toward the retaining frame, and closing mechanisms are provided in the oil storage cavities on both sides of the retaining frame, and the closing mechanism includes an annular sealing wall, which is fixedly arranged in the oil storage cavity and located between the sealing cover and the retaining frame, and the sealing wall is sleeved on the outer side of the sealing plate, and the sealing wall faces the side wall of the sealing plate for contacting and sealing with the outer side wall of the sealing plate.

[0007] The utility model is further configured as follows: a groove is provided on the outer side wall of the sealing plate for abutting against the sealing wall for sealing; the groove is located at one end of the sealing plate close to the sealing cover; a limit baffle is fixedly provided at the other end of the sealing plate; the limit baffle is located between the sealing wall and the retaining frame and is used for abutting against the side wall of the sealing wall facing the retaining frame; an elastic pushing member is provided for abutting against the sealing wall and the sealing cover.

[0008] The utility model is further configured as follows: sealing rings are arranged between the sealing cover and the inner ring and the outer ring, and the sealing rings are fixedly arranged on the sealing cover.

[0009] The utility model is further configured as follows: the sealing cover limiting mechanism includes a fixing plate, the front and rear side walls of the outer ring are respectively fixedly mounted with a fixing plate, and the side wall of the fixing plate facing the retaining frame is used to abut against the side wall of the sealing cover facing away from the retaining frame.

[0010] The utility model is further configured as follows: the fixing plate is detachably arranged on the outer ring, the blocking wall includes two arc-shaped plates with an arc angle of 180°, the inner side wall of the outer ring is provided with annular mounting grooves on both sides of the retaining frame, the mounting grooves respectively penetrate the front and rear sides of the outer ring, the blocking wall and the sealing cover are both sleeved in the mounting grooves, and the blocking wall is supported and arranged between the elastic pushing member and the mounting groove.

[0011] In summary, the beneficial effects of the present invention are:

[0012] 1. This structure can simplify the operation steps of adding lubricating oil to the bearing, and does not require the use of other tools. It is relatively simple and quick. At the same time, it will not expose a large area of ​​the internal structure of the bearing, so it can reduce the probability of impurities entering the bearing.

[0013] 2. By setting up the blocking wall, the blocking plate, the groove and the elastic pusher, the sealing cover can make the oil filling port and the oil storage chamber connected to or isolated from each other by sliding back and forth.

[0014] 3. The structural setting of the blocking wall and the blocking plate and the opening of the installation groove can make the sealing cover and other structures replaceable, and the installation method is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is the overall structural relationship diagram of the utility model;

[0018] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the blocking wall in the utility model.

[0020] Numbers in the figure: 11 inner ring, 12 outer ring, 13 rolling element, 14 retaining frame, 15 sealing cover, 21 oil storage cavity, 22 mounting groove, 23 blocking wall, 231 arc plate, 24 elastic pusher, 31 blocking plate, 311 groove, 312 limit baffle, 32 sealing ring, 33 oil filling port, 34 oil plug, 41 fixing plate. DETAILED DESCRIPTION

[0021] The following will be combined with the attached embodiment of the present utility model Figure 1-4 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example:

[0023] like Figures 1 to 4 As shown, the utility model discloses a bearing which is convenient for adding lubricating oil, comprising an inner ring 1, an outer ring 12, rolling elements 13 and a retaining frame 14. Both sides of the retaining frame 14 are detachably provided with an annular sealing cover 15, the sealing cover 15 is sleeved between the inner ring 1 and the outer ring 12, and the sealing cover 15, the inner ring 1 and the outer ring 12 are surrounded by an oil storage cavity 21 on both sides of the retaining frame 14. This part is arranged the same as the prior art, so it is not described in detail.

[0024] An oil filling port 33 is provided on the sealing cover 15, and an oil plug 34 is detachably provided at the oil filling port 33. At the same time, a closing mechanism for isolating the oil filling port 33 from the oil storage chamber 21 is provided in the oil storage chamber 21. At the same time, the sealing cover 15 is slidably arranged between the inner ring 1 and the outer ring 12 and is linked to the closing mechanism. In this structure, the sealing cover 15 changes the connection between the oil filling port 33 and the oil storage chamber 21 by sliding back and forth.

[0025] Specifically:

[0026] An annular sealing plate 31 is provided on the side wall of the sealing cover 15 and extends toward the retaining frame 14. At the same time, closing mechanisms are provided in the oil storage chambers 21 on both sides of the retaining frame 14. Each closing mechanism is used in combination with the sealing plate 31 on the sealing cover 15 on the same side. The closing mechanism specifically includes an annular sealing wall 23, which is fixedly arranged in the oil storage chamber 21 and located between the sealing cover 15 and the retaining frame 14. At the same time, the sealing wall 23 is sleeved on the outer side of the sealing plate 31. In this structure, the side wall of the sealing wall 23 facing the sealing plate 31 is used to seal against the outer wall of the sealing plate 31.

[0027] In addition, a groove 311 is opened on the outer wall of the sealing plate 31 for sealing against the sealing wall 23. The groove 311 is located at one end of the sealing plate 31 close to the sealing cover 15. At the same time, a limit baffle 312 is fixedly provided at the other end of the sealing plate 31. The limit baffle 312 is located between the sealing wall 23 and the retaining frame 14 and is used for resisting against the side wall of the sealing wall 23 toward the retaining frame 14. In addition, an elastic pushing member 24 is provided for resisting between the sealing wall 23 and the sealing cover 15.

[0028] A sealing cover limiting mechanism is provided on the outer ring 12, and the sealing cover limiting mechanism specifically includes a fixing plate 41. In this structure, the front and rear side walls of the outer ring 12 are fixedly mounted with fixing plates 41. At the same time, the side wall of the fixing plate 41 facing the retaining frame 14 is used to abut against the side wall of the sealing cover 15 facing away from the retaining frame 14.

[0029] The working principle of the above structure is as follows: in the natural state, the elastic pusher 24 can push the fixed plate 41 outward, so that the groove 311 on the blocking plate 31 does not contact the blocking wall 23. At this time, the blocking wall 23 can be used in conjunction with the blocking plate 31 to isolate the oil storage chamber 21 from the oil filling port 33; when the sealing cover 15 is pushed toward the retaining frame 14, the groove 311 gradually approaches the blocking wall 23. When the groove 311 just moves to the blocking wall 23, the oil filling port 33 is connected to the oil storage chamber 21. At this time, the oil plug 34 can be pulled out to inject lubricating oil into the oil storage chamber 21. In addition, in this structure, the limit baffle 312 is used to enable the area of ​​the blocking plate 31 without the groove 311 to continue to maintain a state of contact and sealing with the side wall of the blocking wall 23 when the bearing is not adding lubricating oil, and the fixed plate 41 is used to prevent the blocking plate 31 from being pushed out between the inner ring 1 and the outer ring 12 by the elastic pusher 24. In addition, the structure can further serve as an oil storage function. After the oil plug 34 is installed on the oil filling port 33, a second oil storage environment can be formed between the sealing cover 15 and the sealing wall 23. When the lubricating oil in the oil storage chamber 21 is insufficient and the user does not have lubricating oil, the second oil storage environment formed between the sealing cover 15 and the sealing wall 23 can be used as an alternative for adding lubricating oil to prevent accidents. At the same time, the manufacturer can set the capacity of the second oil storage environment during production so that the second oil storage environment can be used as the amount of oil required for the bearing for a single lubrication.

[0030] A sealing ring 32 is disposed between the sealing cover 15 and the inner ring 1 as well as the outer ring 12 . The sealing ring 32 is fixedly disposed on the sealing cover 15 .

[0031] like Figures 1 to 4 As shown, the fixing plate 41 is detachably mounted on the outer ring 12, and the blocking wall 23 is formed by splicing two arc-shaped plates 231 with an arc angle of 180°. In addition, the inner side wall of the outer ring 12 is provided with an annular mounting groove 22 on both sides of the retainer 14, and the mounting groove 22 extends in a direction opposite to the retainer 14 and penetrates the end of the outer ring 12. In this structure, the blocking wall 23 and the sealing cover 15 are both sleeved in the mounting groove 22, and the blocking wall 23 is abutted and arranged between the elastic pusher 24 and the mounting groove 22.

[0032] This arrangement allows the sealing cover 15 , the sealing wall 23 and the elastic pusher 24 to be disassembled and replaced, which is beneficial for subsequent cleaning and maintenance. At the same time, the sealing wall 23 is composed of two arc-shaped plates 231 with an arc of 180°, which can facilitate people to assemble the sealing wall 23 and the sealing cover 15 .

[0033] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing that is easy to add lubricating oil, comprising an inner ring (1), an outer ring (12), rolling elements (13) and a cage (14), characterized in that: An annular sealing cover (15) is provided on both sides of the retaining frame (14). The sealing cover (15) is sleeved between the inner ring (1) and the outer ring (12). The sealing cover (15), the inner ring (1) and the outer ring (12) surround an oil storage cavity (21) on both sides of the retaining frame (14). An oil filling port (33) is provided on the sealing cover (15). A closing mechanism for isolating the oil filling port (33) from the oil storage cavity (21) is provided in the oil storage cavity (21). The sealing cover (15) is slidably provided between the inner ring (1) and the outer ring (12) and is linked to the closing mechanism. The sealing cover (15) changes the communication between the oil filling port (33) and the oil storage cavity (21) by sliding forward and backward. A detachable oil plug (34) is provided at the oil filling port (33).

2. A bearing that is easy to add lubricating oil according to claim 1, characterized in that: The outer ring (12) is provided with a sealing cover limiting mechanism, and the sealing cover limiting mechanism is used to enable the sealing cover (15) to maintain a sliding contact relationship with the inner ring (1) and the outer ring (12).

3. A bearing that is easy to add lubricating oil according to claim 2, characterized in that: An annular sealing plate (31) is provided on the side wall of the sealing cover (15) extending in the direction of the retaining frame (14); a closing mechanism is provided in the oil storage chambers (21) on both sides of the retaining frame (14); the closing mechanism comprises an annular sealing wall (23); the sealing wall (23) is fixedly arranged in the oil storage chamber (21) and is located between the sealing cover (15) and the retaining frame (14); the sealing wall (23) is sleeved on the outside of the sealing plate (31); the side wall of the sealing wall (23) facing the sealing plate (31) is used to abut and seal against the outer wall of the sealing plate (31).

4. A bearing that is easy to add lubricating oil according to claim 3, characterized in that: The sealing plate (31) is provided with a groove (311) on its outer side wall for abutting and sealing against the sealing wall (23); the groove (311) is located at one end of the sealing plate (31) close to the sealing cover (15); a limit baffle (312) is fixedly provided at the other end of the sealing plate (31); the limit baffle (312) is located between the sealing wall (23) and the retaining frame (14) and is used for abutting against the side wall of the sealing wall (23) facing the retaining frame (14); and an elastic pusher (24) is provided for abutting against the sealing wall (23) and the sealing cover (15).

5. A bearing that is easy to add lubricating oil according to claim 4, characterized in that: A sealing ring (32) is provided between the sealing cover (15) and the inner ring (1) as well as the outer ring (12); the sealing ring (32) is fixedly arranged on the sealing cover (15).

6. A bearing that is easy to add lubricating oil according to claim 5, characterized in that: The sealing cover limiting mechanism comprises a fixing plate (41), and the front and rear side walls of the outer ring (12) are respectively fixedly mounted with a fixing plate (41), and the side wall of the fixing plate (41) facing the retaining frame (14) is used to abut against the side wall of the sealing cover (15) facing away from the retaining frame (14).

7. A bearing that is easy to add lubricating oil according to claim 6, characterized in that: The fixing plate (41) is detachably mounted on the outer ring (12); the blocking wall (23) comprises two arc-shaped plates (231) with an arc angle of 180°; the inner side wall of the outer ring (12) is provided with an annular mounting groove (22) on both sides of the retaining frame (14); the mounting groove (22) penetrates the front and rear sides of the outer ring (12) respectively; the blocking wall (23) and the sealing cover (15) are both sleeved in the mounting groove (22); and the blocking wall (23) is abutted and arranged between the elastic pusher (24) and the mounting groove (22).

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