Bearing capable of effectively preventing silt from entering

Abstract

The bearing capable of effectively preventing silt from entering comprises a bearing seat, a bearing inner ring, a bearing inner shaft and a retainer, the bearing inner ring is located in the bearing seat, the bearing inner shaft is located in the bearing inner ring, and rollers are evenly fixed to the retainer. The bearing is characterized in that oil seals are arranged on the two sides of the bearing inner ring, the outer rings of the oil seals are in interference fit with the inner ring of the bearing seat, and the outer ring of the bearing inner shaft is in interference fit with the inner rings of the oil seals; the oil seal is composed of a rectangular ring, an arc-shaped ring and a sealing ring, the sealing ring is located on the inner side of the rectangular ring, and the sealing ring is connected with the rectangular ring through the arc-shaped ring. According to the bearing capable of effectively preventing silt from entering, through common blocking of the rectangular ring, the arc-shaped ring and the sealing ring, not only can sealing of lubricating oil be achieved, but also external silt can be effectively prevented from entering, and therefore the bearing can be used as a plough share bearing of a disc plough working in soil.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bearing, more specifically, relates to a bearing capable of effectively avoiding the entry of mud and sand. BACKGROUND

[0002] The bearing is a supporting device of the shaft in mechanical transmission, and the bearing converts sliding friction into rolling friction to improve the mechanical transmission efficiency by reducing friction loss. Due to the difference of working conditions of the bearing, the bearing has different requirements for different conditions, but the bearing is required to have a dustproof function to avoid the entry of external dust into the bearing and to avoid damage to the rollers and raceways of the bearing. However, for the bearing used in a soil landfill, the sealing of the existing dust cover cannot prevent the entry of soil.

[0003] As shown in Figure 1 The structure of the existing disc plow is shown in the schematic view, the disc plow share is fixed to the lower end of the plow leg through the plow bearing, and in the process of plowing the field by the disc plow, the lower half of the disc plow share extends into the soil, so that the plow bearing connecting the disc plow share and the plow leg is in the soil. Once the soil enters the plow bearing, the fine sand particles in the soil are easy to scratch the roller raceway of the bearing during the rotation of the roller, which causes damage to the bearing and seriously shortens the service life of the disc plow. Therefore, it is urgent to design a bearing that can work in soil and improve the service life of the bearing by preventing the entry of soil. SUMMARY

[0004] The utility model discloses in order to overcome the above technical problem's shortcoming, provide a bearing that can effectively avoid the entry of mud and sand.

[0005] The bearing capable of effectively avoiding the entry of mud and sand of the utility model, including bearing seat, bearing inner ring, bearing inner shaft and retainer, bearing inner ring is located inside the bearing seat, bearing inner shaft is located in the bearing inner ring, and the retainer is located between the bearing inner shaft and the bearing inner ring, the retainer is uniformly fixed with the roller, and the inner surface of the bearing inner ring and the outer surface of the bearing inner shaft are respectively provided with the outer raceway and the inner raceway matched with the roller. The central part of the bearing inner shaft is provided with an axle hole through which a transmission shaft passes. Its characterized in that: the two sides of the bearing inner ring are provided with oil seals, the outer ring of the oil seal is in interference fit with the inner ring of the bearing seat, and the outer ring of the bearing inner shaft is in interference fit with the inner ring of the oil seal. The oil seal is composed of a rectangular ring, an arc-shaped ring and a sealing ring. The sealing ring is located on the inner side of the rectangular ring, and the sealing ring is connected with the rectangular ring through the arc-shaped ring. The arc-shaped ring is located on the outer side of the sealing ring.

[0006] The utility model discloses a bearing that can effectively avoid the entry of silt, the both sides of the retainer are provided with annular end cover, and the annular end cover is located between the oil seal and the retainer, the outer ring of the annular end cover touches on the inner surface of the bearing inner ring, and the inner ring of the annular end cover contacts with the outer surface of the bearing inner shaft.

[0007] The utility model discloses a bearing that can effectively avoid the entry of silt, the rectangular ring, the arc ring and the sealing ring of the oil seal are integrally formed.

[0008] The utility model discloses a bearing that can effectively avoid the entry of silt, a plurality of installation holes for installing the bearing are evenly formed on the bearing seat.

[0009] The utility model discloses a bearing that can effectively avoid the entry of silt, a plurality of installation holes for installing the bearing are evenly formed on the bearing seat.

[0010] The utility model discloses a bearing that can effectively avoid the entry of silt, a plurality of installation holes for installing the bearing are evenly formed on the bearing seat.

[0011] The utility model discloses a bearing that can effectively avoid the entry of silt, a plurality of installation holes for installing the bearing are evenly formed on the bearing seat.

[0012] Further, the both sides of the retainer are provided with circular end cover, and the circular end cover is located between the retainer and the oil seal, so that the circular end cover can further avoid the entry of silt into the area where the retainer is located, thereby avoiding the damage of the silt to the rollers and the raceway during the rotation of the bearing, and the bearing has a longer service life, thereby solving the problem of short service life of the existing bearing applied to the disc plow. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure schematic view of the existing disc plow;

[0014] Figure 2 It is the front view of the bearing that can effectively avoid the entry of silt of the utility model;

[0015] Figure 3The rear view of the bearing capable of effectively avoiding the entry of silt of the utility model;

[0016] Figure 4 The left view of the bearing capable of effectively avoiding the entry of silt of the utility model;

[0017] Figure 5 The right view of the bearing capable of effectively avoiding the entry of silt of the utility model;

[0018] Figure 6 The top view of the bearing capable of effectively avoiding the entry of silt of the utility model;

[0019] Figure 7 The bottom view of the bearing capable of effectively avoiding the entry of silt of the utility model;

[0020] Figure 8 For Figure 2 The sectional view of A-A section;

[0021] Figure 9 , Figure 10 All are the perspective view of the bearing capable of effectively avoiding the entry of silt of the utility model;

[0022] Figure 11 The sectional view of the bearing capable of effectively avoiding the entry of silt of the utility model;

[0023] Figure 12 The perspective view of the bearing capable of effectively avoiding the entry of silt of the utility model after removing the bearing seat and the oil seal on one side;

[0024] Figure 13 The sectional view of the oil seal in the utility model;

[0025] Figure 14 The perspective view of the annular end cover in the utility model.

[0026] In the drawing: 1 disc plough share, 2 plough leg, 3 plough share bearing; 4 bearing seat, 5 bearing inner ring, 6 bearing inner shaft, 7 retainer, 8 roller, 9 inner raceway, 10 outer raceway, 11 oil seal, 12 sealing ring, 13 annular end cover, 14 mounting hole, 15 shaft fixing hole, 16 lubricating hole, 17 shaft hole, 18 arc-shaped ring, 19 rectangular ring. DETAILED DESCRIPTION

[0027] The utility model will be further described below in combination with the drawings and examples.

[0028] For example Figure 1The diagram shows a schematic of an existing disc plow. The disc plowshare 1 is fixed to the lower end of the plow leg 2 via a plowshare bearing 3. During operation, the disc plowshare 1 rotates to cut the soil. However, during plowing, a large portion of the disc plowshare 1 penetrates deep into the soil, causing the plowshare bearing 3 to also penetrate deeply. This makes it easy for mud and sand to enter the plowshare bearing 3, causing scratches and wear on the rollers and raceways. This leads to eccentricity of the plowshare bearing 3, which in turn accelerates wear and significantly shortens its lifespan. Therefore, this invention provides a bearing that effectively prevents mud and sand from entering.

[0029] like Figures 2 to 7 As shown, the front view, rear view, left view, right view, top view, and bottom view of the bearing of this utility model that can effectively prevent mud and sand from entering are given respectively. Figure 9 , Figure 10 Its 3D diagram is given. Figure 11 Its sectional view is given. Figure 8 Given Figure 2 The cross-sectional view of section AA shows that the bearing consists of a bearing housing 4, an inner bearing ring 5, an inner bearing shaft 6, a cage 7, rollers 8, an oil seal 11, and an annular end cap 13. The bearing housing 4 provides fixation and support. The inner bearing ring 5 is housed within the bearing housing 4, and the inner bearing shaft 6 is housed within the inner bearing ring 5. The cage 7 is positioned between the inner bearing shaft 6 and the inner bearing ring 5. Rollers 8 are evenly distributed on the cage 7, which limits the movement of the rollers 8 without restricting their rotation. An outer raceway 10 that mates with the rollers 8 is formed on the inner surface of the inner bearing ring 5, and an inner raceway 9 that mates with the rollers 8 is formed on the outer surface of the inner bearing shaft 6. The outer end and inner end of the same roller 8 are respectively placed in the outer raceway 10 and the inner raceway 9.

[0030] Oil seals 11 are provided on both sides of the inner ring 5 of the bearing shown. Three inner rings are provided inside the bearing housing 4, and these three inner rings respectively mate with the inner ring 5 of the bearing and the two oil seals 11. The outer ring of the oil seal 11 is interference-fitted with the inner ring of the bearing housing 4, and the inner ring of the oil seal 11 is interference-fitted with the outer ring of the inner shaft 6 of the bearing. This is equivalent to the oil seal 11 being inserted between the bearing housing 4 and the inner shaft 6 of the bearing, achieving a seal on the cage 7 and rollers 8 inside the two oil seals 11. This effectively prevents external mud and sand from entering the interior of the two oil seals 11, thus avoiding damage to the rollers 8, inner raceway 9, and outer raceway 10 caused by mud and sand.

[0031] To ensure the oil seal 11 is sealed against mud and sand, Figure 13The sectional view of the oil seal is shown in the utility model, the oil seal 11 is composed of a rectangular ring 19, an arc-shaped ring 19 and a sealing ring 12, the cross section of the rectangular ring 19 is rectangular, the cross section of the arc-shaped ring 19 is arc-shaped, the sealing ring 12 is located at the inner side of the rectangular ring 19, the sealing ring 12 is connected with the rectangular ring 19 through the arc-shaped ring 19, the arc-shaped ring 19 is located at the outer side of the sealing ring 12, in order to ensure the firmness of the oil seal 11, the rectangular ring 19, the arc-shaped ring 18 and the sealing ring 12 constituting the oil seal 11 are integrally formed. It can be seen that, since the sealing ring 12 is arranged at the inner side of the arc-shaped ring 19, the arc-shaped ring 19 is more firm, even if the bearing works in the soil, the outside mud and sand can also be effectively avoided.

[0032] Both sides of the retainer 7 are provided with annular end covers 13, as shown, Figure 12 The utility model discloses a bearing that can effectively avoid the entry of mud and sand after the removal of the bearing seat and the oil seal on one side, Figure 14 The utility model discloses a bearing that can effectively avoid the entry of mud and sand after the removal of the bearing seat and the oil seal on one side,

[0033] The bearing seat 4 is uniformly provided with four mounting holes 14, and the bearing seat 4 can be fixed on the corresponding position through the bolts passing through the mounting holes 14. The bearing seat 4 is provided with lubricating holes 16, and the lubricant can be injected into the internal cavity where the retainer 7 and the roller 8 are located through the lubricating holes 16, so as to realize the lubrication of the bearing. The inside of the bearing inner shaft 6 is an axle hole 17 for installing a transmission shaft, and the bearing inner shaft 6 is provided with two shaft fixing holes 15, and the transmission shaft can be locked through the bolts passing through the shaft fixing holes 15.

Claims

1. A bearing capable of effectively avoiding the entry of silt, comprising a bearing seat (4), a bearing inner ring (5), a bearing inner shaft (6) and a retainer (7), the bearing inner ring being located inside the bearing seat, the bearing inner shaft being located in the bearing inner ring, and the retainer being located between the bearing inner shaft and the bearing inner ring, the retainer being uniformly fixed with rollers (8) thereon, and the inner surface of the bearing inner ring and the outer surface of the bearing inner shaft being respectively provided with an outer raceway (10) and an inner raceway (9) matched with the rollers; a shaft hole (17) through which a transmission shaft passes is formed in the center of the bearing inner shaft; characterized in that: Both sides of the bearing inner ring (5) are provided with oil seals (11), the outer ring of the oil seal is in interference fit with the inner ring of the bearing seat (4), and the outer ring of the bearing inner shaft (6) is in interference fit with the inner ring of the oil seal; the oil seal is composed of a rectangular ring (19), an arc-shaped ring (18) and a sealing ring (12), the sealing ring is located on the inner side of the rectangular ring, the sealing ring is connected with the rectangular ring through the arc-shaped ring, and the arc-shaped ring is located on the outer side of the sealing ring.

2. The bearing effective to avoid the entry of silt according to claim 1, wherein: Both sides of the retainer (7) are provided with annular end covers (13), the annular end covers are located between the oil seals (11) and the retainer, the outer ring of the annular end cover abuts against the inner surface of the bearing inner ring (5), and the inner ring of the annular end cover is in contact with the outer surface of the bearing inner shaft (6).

3. The bearing effective to avoid the entry of silt as claimed in claim 1 or 2, wherein: The rectangular ring (19), the arc-shaped ring (18) and the sealing ring (12) of the oil seal (11) are in one-piece structure.

4. The bearing effective to avoid the entry of silt according to claim 1 or 2, characterized in that: A plurality of mounting holes (14) for mounting the bearing seat (4) are uniformly formed on the bearing seat (4).

5. The silt-proofing bearing according to claim 1 or 2, wherein: The bearing seat (4) is provided with lubricating holes (16) for lubricating the bearing.

6. The silt-proofing bearing of claim 1 or 2, wherein: The bearing inner shaft (6) is provided with shaft fixing holes (15) for fastening the rotating shaft.

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