Bearing sealing end cover

Abstract

The utility model relates to the field of sealing end covers, and particularly discloses a bearing sealing end cover which comprises a cover body, a water retaining ring and a lantern ring, the cover body is fixed on the end face of a shell through bolts, an annular protrusion is fixedly arranged on the end face of the side, close to the shell, of the cover body and abuts against a bearing outer ring, and the lantern ring is arranged on the side, close to the bearing outer ring, of the cover body. A shaft neck of a shaft is sleeved with the lantern ring, a through hole is formed in the center of the cover body, the diameter of the through hole is larger than that of the shaft neck of the shaft, the water retaining ring is arranged between the lantern ring and the cover body and fixed to the lantern ring, a grease storage interval is formed between the water retaining ring and the cover body, and lubricating grease is filled in the grease storage interval. The annular protrusion on the cover body is used for supporting and fixing the outer ring of the bearing, the water retaining ring is used for shielding the through hole in the cover body, lubricating grease in the grease storage interval can isolate water from passing through, so that the bearing is prevented from being eroded by the water, more lubricating grease can be stored in the wavy grease storage interval, and meanwhile the water isolation capacity is improved.

Description

Technical Field

[0001] This utility model relates to the field of sealing end caps, specifically a bearing sealing end cap. Background Technology

[0002] Bearing end caps are important mechanical parts, usually made of cast iron. Their main function is axial positioning of the bearing, ensuring the stability of the bearing outer ring in the axial direction. They also serve as dustproof and sealing devices, preventing dust and impurities from entering the bearing. Bearing end caps are divided into closed caps and open caps. Open caps have a circular hole in the center through which the shaft passes. To avoid friction between the shaft and the open cap during rotation, the diameter of the hole is larger than the diameter of the shaft. This allows moisture to enter the housing through the gap between the hole and the shaft, contacting the bearing and corroding it, thus affecting its performance. Utility Model Content

[0003] The purpose of this utility model is to provide a bearing sealing end cap to overcome the above-mentioned defects in the prior art.

[0004] A bearing sealing end cap according to this utility model includes a cover body, a water-retaining ring, and a collar. The cover body is fixed to the end face of the housing by bolts. A circular protrusion is fixed on the end face of the cover body near the housing, and the circular protrusion abuts against the outer ring of the bearing. The collar is disposed on the side of the cover body near the outer ring of the bearing and is sleeved on the journal of the shaft. A through hole is opened at the center of the cover body, and the diameter of the through hole is larger than the diameter of the journal of the shaft. The water-retaining ring is disposed between the collar and the cover body and is fixed on the collar. A grease reservoir is formed between the water-retaining ring and the cover body, and the grease reservoir is filled with lubricating grease.

[0005] Through the above technical solution, the annular protrusion on the cover is used to support and fix the outer ring of the bearing, the water-blocking ring is used to block the through hole on the cover, and the grease in the grease reservoir can prevent water from passing through, thereby preventing water from corroding the bearing.

[0006] Preferably, the end face of the cover near the collar has an annular groove located outside the through hole and communicating with the through hole. The water-blocking ring is embedded in the groove. A gap of 1mm-2mm is formed between the outer periphery of the water-blocking ring and the side wall of the annular groove. The part of the end face of the water-blocking ring away from the outer ring of the bearing that is close to the through hole forms a gap of 1mm-2mm with the part of the bottom wall of the annular groove that is close to the through hole. The grease storage interval is located between the two gaps.

[0007] Through the above technical solution, the two gaps can reduce grease leakage in the grease reservoir and prevent the water-blocking ring from rubbing against the cover when it rotates with the shaft.

[0008] Preferably, the end face of the water-blocking ring away from the collar is wavy, and the bottom wall of the annular groove on the cover is wavy, so that the grease reservoir formed between the water-blocking ring and the cover is wavy, and the width of the grease reservoir is 2mm-4mm.

[0009] Through the above technical solution, the wavy grease reservoir can store more grease while increasing the moisture barrier.

[0010] Preferably, a connecting ring is fixedly provided on the end face of the collar near the water-blocking ring, and an annular groove is formed on the end face of the water-blocking ring near the collar, with the connecting ring fixed in the annular groove.

[0011] The above technical solution increases the connection strength between the water-blocking ring and the collar.

[0012] Preferably, an extension ring is fixed on the outer periphery of the water-blocking ring, and a gap is formed between the extension ring and the cover body near the outer ring of the bearing.

[0013] Through the above technical solutions, the extension ring can further reduce grease leakage within the grease reservoir.

[0014] The beneficial effects of this utility model are: the annular protrusion on the cover is used to support and fix the outer ring of the bearing; the water-blocking ring is used to block the through hole on the cover; the grease in the grease reservoir can prevent water from passing through, thereby preventing water from corroding the bearing; the wavy grease reservoir can store more grease and at the same time increase the water isolation capability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a utility model Figure 1 Enlarged diagram of point A in the middle.

[0017] In the picture:

[0018] 1. Shaft; 2. Inner ring of bearing; 3. Outer ring of bearing; 4. Housing; 11. Grease reservoir; 12. Water baffle; 13. Connecting ring; 14. Collar; 15. Extension ring; 16. Cover. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1The orientations or positional relationships shown are merely simplified descriptions for the convenience of describing this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model. As used herein, the terms up and down and left and right are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors. The specific features of this bearing sealing end cover are described in detail below:

[0021] One embodiment of this utility model:

[0022] Reference Figures 1-2 This utility model provides a bearing sealing end cap, including a cap body 16, a water-retaining ring 12, and a collar 14. The water-retaining ring 12 is made of rubber, while the collar 14 and the cap body 16 are made of cast iron. The cap body 16 is fixed to the end face of the housing 4 by bolts. A circular protrusion is fixed on the end face of the cap body 16 near the housing 4, and the circular protrusion abuts against the outer ring 3 of the bearing. The collar 14 is disposed on the side of the cap body 16 near the outer ring 3 of the bearing, and the collar 14 is sleeved on the journal of the shaft 1. The outer diameter of the collar 14 can be set to be larger than the diameter of the shaft 1, so that the collar 14 can abut against the inner ring 2 of the bearing, thereby positioning the inner ring 2 of the bearing. A through hole is opened at the center of the cover 16, and the diameter of the through hole is larger than the diameter of the journal of the shaft 1. The water-blocking ring 12 is disposed between the collar 14 and the cover 16, and the water-blocking ring 12 is fixed on the collar 14. A grease reservoir 11 is formed between the water-blocking ring 12 and the cover 16, and the grease reservoir 11 is filled with grease. The cover 16 is close to the collar 14. A ring 14 has an annular groove on one side of its end face that is located outside the through hole and communicates with the through hole. A water-blocking ring 12 is embedded in the groove. A 1mm gap is formed between the outer periphery of the water-blocking ring 12 and the side wall of the annular groove. A 1mm gap is formed between the part of the end face of the water-blocking ring 12 away from the bearing outer ring 3 that is close to the through hole and the part of the bottom wall of the annular groove that is close to the through hole. A grease reservoir 11 is located between the two gaps. The end face of the water-blocking ring 12 away from the collar 14 is wavy. The bottom wall of the annular groove on the cover 16 is wavy, so that the grease reservoir 11 formed between the water-blocking ring 12 and the cover 16 is wavy. The width of the grease reservoir 11 is 2mm. A connecting ring 13 is fixed on the end face of the collar 14 near the water-blocking ring 12. An annular groove is formed on the end face of the water-blocking ring 12 near the collar 14. The connecting ring 13 is fixed in the annular groove. An extension ring 15 is fixed on the outer periphery of the water-blocking ring 12. A gap is formed between the extension ring 15 and the cover 16 near the bearing outer ring 3.

[0023] Those skilled in the art will appreciate that various modifications to the above embodiments can be made without departing from the overall spirit and concept of this utility model. All such modifications fall within the protection scope of this utility model. The protection scheme of this utility model is defined by the appended claims.

Claims

1. A bearing sealing end cap, characterized in that: The device includes a cover (16), a water-blocking ring (12), and a collar (14). The cover (16) is fixed to the end face of the housing (4) by bolts. A circular protrusion is fixed on the end face of the cover (16) near the housing (4). The circular protrusion abuts against the outer ring (3) of the bearing. The collar (14) is located on the side of the cover (16) near the outer ring (3) of the bearing. The collar (14) is sleeved on the journal of the shaft (1). A through hole is opened at the center of the cover (16). The diameter of the through hole is larger than the diameter of the journal of the shaft (1). The water-blocking ring (12) is located between the collar (14) and the cover (16). The water-blocking ring (12) is fixed on the collar (14). A grease reservoir (11) is formed between the water-blocking ring (12) and the cover (16). The grease reservoir (11) is filled with grease.

2. The bearing sealing end cap according to claim 1, characterized in that: The cover (16) has an annular groove on one end face near the collar (14) that is located outside the through hole and communicates with the through hole. The water baffle (12) is embedded in the groove. A gap of 1mm-2mm is formed between the outer periphery of the water baffle (12) and the side wall of the annular groove. A gap of 1mm-2mm is formed between the part of the water baffle (12) near the through hole and the part of the bottom wall of the annular groove near the through hole. The grease storage interval (11) is located between the two gaps.

3. A bearing sealing end cap according to claim 2, characterized in that: The end face of the water-blocking ring (12) away from the collar (14) is wavy, and the bottom wall of the annular groove on the cover (16) is wavy, so that the grease storage interval (11) formed between the water-blocking ring (12) and the cover (16) is wavy, and the width of the grease storage interval (11) is 2mm-4mm.

4. A bearing sealing end cap according to claim 1, characterized in that: A connecting ring (13) is fixedly provided on the end face of the collar (14) near the water-blocking ring (12). An annular groove is provided on the end face of the water-blocking ring (12) near the collar (14). The connecting ring (13) is fixed in the annular groove.

5. A bearing sealing end cap according to claim 1, characterized in that: An extension ring (15) is fixed on the outer periphery of the water-blocking ring (12), and a gap is formed between the extension ring (15) and the cover (16) near the outer ring (3) of the bearing.

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