CN217440568U

CN217440568U - Double-row roller bearing of beach buggy

Info

Publication number: CN217440568U
Application number: CN202122962231.9U
Authority: CN
Inventors: 范中伟; 陈淼均; 潘宁宁
Original assignee: Xinchang Shi Da Bearing Co ltd
Current assignee: Xinchang Shi Da Bearing Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-09-16
Anticipated expiration: 2031-11-30

Abstract

The utility model relates to the technical field of bearings, specifically speaking relates to a double-row roller bearing of sandy beach car. The dune buggy is the short form of all-terrain vehicle, and the service environment is worse than that of a road vehicle. Foreign matters such as water, silt and the like easily enter the inside of the bearing, so that lubrication failure is caused, and the service life of the bearing is shortened. The non-paved road surface can generate great axial and radial impact on the bearing, and the damage of fatigue pitting corrosion and the like of the bearing is caused. A double-row roller bearing of a beach vehicle comprises an outer ring, an inner ring, an oil seal assembly, a self-locking ring, a retainer and a tapered roller. The inner ring is arranged by 2 pieces of opposite attaching, and is provided with a self-locking groove, and locking is realized through a self-locking ring. The oil seal assembly comprises a first stop block, a sealing ring and a second stop block, and the sealing effect is improved. The axes of the two rows of tapered rollers are arranged in a V shape, so that the bearing can better resist the impact from the axial direction and the radial direction, and the service life of the bearing is prolonged.

Description

Double-row roller bearing of beach buggy

Technical Field

The utility model relates to a bearing technical field, more specifically say and relate to a double-row roller bearing of sandy beach car.

Background

The dune buggy is a short form of all-terrain vehicle, can run on the terrain where ordinary vehicles are difficult to maneuver, is mainly applied to areas where other vehicles such as sand beach, gobi and wilderness cannot run normally, and has a more severe service environment compared with ordinary road cars. Foreign matters such as moisture, silt and the like easily enter the bearing, so that lubrication failure is caused, and the service life of the bearing is shortened. The non-paved road surface can generate great axial and radial impact on the bearing, and the damage of fatigue pitting corrosion and the like of the bearing is caused. The reliability is an important index of the quality of the dune buggy, and the reliability of the bearing directly influences the quality reliability of the whole dune buggy. Even if the conventional maintenance is carried out on the existing bearing of the dune buggy as required, the failure in the forms of pitting, plastic deformation and the like still occurs, so that the equipment cannot normally operate, and the use cost of the equipment is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a double-row roller bearing of sandy beach car that is waterproof, shock-resistant, resistant silt, longe-lived to the not enough of prior art.

A double-row roller bearing of a beach vehicle comprises an outer ring, an inner ring, an oil seal assembly, a tapered roller, a self-locking ring and a retainer. The inner ring is formed by laminating 2 pieces of the inner ring in opposite directions, the outer surface of the inner ring is an inclined plane with retainer rings at two ends, and a roller path is arranged on the inclined plane of the inner ring; the inner rings are also provided with self-locking grooves, the self-locking grooves of the two inner rings are oppositely arranged, and the self-locking rings are positioned in the self-locking grooves of the two rows of inner rings to realize the locking of the two inner rings; the inner surface of the outer ring is V-shaped and extends from the top end of the V-shaped to two sides along the radial direction to form a platform, and two sides of the V-shaped outer ring are respectively provided with a raceway; the outer ring raceway corresponds to the inner ring raceway to form a motion space of the tapered roller; the tapered roller is arranged in a raceway space formed by the outer ring and the inner ring, and one end of the tapered roller with a small diameter faces the inner side of the bearing, so that the stability of the bearing during high-speed operation is improved, and the capability of the bearing for resisting radial and axial impact is improved; the oil seal assembly is arranged between the outer ring platform and the inner ring outer side retainer ring, so that silt and moisture in the environment are prevented from entering the bearing, and the service life of the bearing is prolonged.

As a further improvement and supplement to the above solution, the present invention further comprises the following additional technical features:

and the joint of the inner ring raceway and the retaining rings at two ends is provided with an arc groove, so that the friction force between the tapered roller and the retaining rings is reduced.

A trapezoidal groove is formed in the joint of the outer ring roller path and the outer platform, and the friction force between the tapered roller and the outer platform is reduced.

The oil seal assembly comprises a first stop block, a sealing ring and a second stop block; the first stop block and the second stop block are of L-shaped structures and are arranged oppositely; the sealing ring is sleeved at two ends and the inner side of the second stop block, two V-shaped sealing lips are arranged on the sealing ring in the axial direction of the first stop block, and one V-shaped sealing lip is arranged in the radial direction of the first stop block; the sealing lip is in interference fit with the first stop block. The sealing lips with the gradually shortened lengths stop moisture and silt in the environment from entering the bearing, so that the sealing effect is improved, and the friction resistance of the bearing during rotation is reduced.

The inner diameter of the outer end of the inner ring is composed of an oblique conical surface and a middle arc transition section, and the inner ring is convenient to mount and dismount.

The material of the retainer is glass fiber reinforced nylon, so that the service life of the retainer is prolonged, and the use cost is reduced.

The seal ring is made of NBR, so that the oil resistance of the seal ring is improved, silt, moisture and the like cannot enter the inside of the bearing, the service life of the bearing is prolonged, the use cost is reduced, and the seal ring is resistant to low temperature, high temperature and corrosion.

Use the utility model discloses following beneficial effect can be reached: the utility model has reasonable and compact structure, and reduces the friction resistance between the tapered roller and the inner ring and the outer ring; the sealing assembly is strengthened, the sealing effect is improved, moisture and silt in the environment are prevented from entering the interior of the bearing, and the service life of the bearing is prolonged; the axes of the two rows of conical rotors are V-shaped, so that the axial and radial impact resistance of the bearing is improved.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a partial enlarged view of a portion a shown in fig. 1.

Fig. 3 is a partial enlarged view of the position B shown in fig. 1 of the present invention.

Fig. 4 is a partial enlarged view of the new utility model at C shown in fig. 1.

Detailed Description

The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1-4, the utility model relates to a double-row roller bearing of beach buggy, including outer lane 1, inner circle 2, oil blanket subassembly 3, tapered roller 4, self-locking ring 5 and holder 6. The inner ring 2 is formed by laminating 2 pieces of materials in opposite directions, the outer surface of the inner ring 2 is an inclined plane with check rings at two ends, the large check ring is close to the outer side of the bearing, and the small check ring is close to the inner side of the bearing. The inclined surface of the inner ring 2 is provided with a raceway, and the retainer ring limits the displacement of the tapered roller along the generatrix direction of the raceway. The inner rings 2 are also provided with self-locking grooves, the self-locking grooves of the two inner rings 2 are arranged in opposite directions, and the self-locking ring 5 is positioned in the self-locking grooves of the two rows of inner rings 2 to limit the relative movement of the two rows of inner rings 2. The inner surface of the outer ring 1 is V-shaped and extends from the V-shaped top end to two sides along the radial direction to form a platform, the two sides of the V-shaped outer ring 1 are respectively provided with a roller path, and the V-shaped contact surface enables the bearing to bear stronger axial impact. The tapered roller 4 is arranged in the raceways of the outer ring 1 and the inner ring 2, and one end of the tapered roller 4 with a small diameter faces the inner side of the bearing, so that the effect of more stability in high-speed operation can be achieved. The tapered roller is used as the bearing rolling element of the dune buggy, the point contact of the rolling element of the common ball bearing and the raceway is changed into line contact, and the capability of the bearing for resisting axial and radial impact is improved. The retainer 6 uniformly separates the tapered rollers 4 in the raceway formed by the outer ring 1 and the inner ring 2, and reduces the contact friction force between the tapered rollers 4. And the oil seal assembly 3 is arranged between the outer ring 1 platform and the inner ring 2 outer side retainer ring, and blocks moisture and silt in the environment outside the bearing.

Furthermore, the joint of the raceway of the inner ring 2 and the retainer rings at the two ends is provided with an arc groove, so that the friction resistance between the tapered roller 4 and the retainer rings is reduced.

Furthermore, a trapezoidal groove is formed in the joint of the outer ring 1 raceway and the outer side platform, so that the frictional resistance between the tapered roller 4 and the outer ring 1 platform section is reduced.

Further, the oil seal assembly 3 comprises a first stop 31, a seal ring 32 and a second stop 33; the first stop block 31 and the second stop block 33 are L-shaped structures, and the first stop block 31 and the second stop block 33 are oppositely arranged to form a square frame structure; the sealing ring 32 is sleeved at two ends and the inner side of the second stop block 33, two V-shaped sealing lips are arranged on the sealing ring 32 in the axial direction of the first stop block 31, and one V-shaped sealing lip is arranged in the radial direction of the first stop block 31; the sealing lip is in interference fit with the first stop 31. The length of the three sealing lips is reduced in sequence, the sealing effect is enhanced in sequence, the sealing effect is improved, and the friction resistance is reduced.

Furthermore, the inner diameter of the outer end of the inner ring 2 is composed of an oblique conical surface and a middle arc transition section.

Furthermore, the material of the retainer 6 is glass fiber reinforced nylon.

Further, the material of the sealing ring 32 is NBR.

The above is the preferred embodiment of the present invention, and the protection scope of the present invention is not limited, and the deformation and improvement made by the design idea of the present invention for those skilled in the art should be considered as the protection scope of the present invention.

Claims

1. The utility model provides a sandy beach car's double-row roller bearing, includes outer lane (1), inner circle (2), oil blanket subassembly (3), tapered roller (4), self-locking circle (5) and holder (6), its characterized in that: the inner ring (2) is formed by 2 pieces of materials which are oppositely attached, the outer surface of the inner ring (2) is an inclined plane with retainer rings at two ends, and a roller path is arranged on the inclined plane of the inner ring (2); the inner rings (2) are also provided with self-locking grooves, and the self-locking grooves of the two inner rings (2) are oppositely arranged; the self-locking ring (5) is positioned in the self-locking grooves of the two rows of inner rings (2); the inner surface of the outer ring (1) is V-shaped and extends from the V-shaped top end to two sides along the radial direction to form a platform, and the two sides of the V-shaped outer ring (1) are respectively provided with a raceway; the tapered rollers (4) are arranged in the raceways of the outer ring (1) and the inner ring (2), and one small-diameter end of each tapered roller (4) faces the inner side of the bearing; the oil seal assembly (3) is arranged between the outer ring (1) platform and the inner ring (2) outer side retainer ring.

2. The double-row roller bearing for a beach vehicle of claim 1 in which: and an arc groove is arranged at the joint of the raceway of the inner ring (2) and the check rings at the two ends.

3. The double row roller bearing for a beach vehicle of claim 1 in which: the joint of the raceway of the outer ring (1) and the outer platform is provided with a trapezoidal groove.

4. The double row roller bearing for a beach vehicle of claim 1 in which: the oil seal assembly (3) comprises a first stop block (31), a sealing ring (32) and a second stop block (33); the first stop block (31) and the second stop block (33) are of L-shaped structures, and the first stop block (31) and the second stop block (33) are arranged oppositely; the sealing ring (32) is sleeved at two ends and the inner side of the second stop block (33), two V-shaped sealing lips are arranged on the sealing ring (32) in the axial direction of the first stop block (31), and one V-shaped sealing lip is arranged in the radial direction of the first stop block (31); the sealing lip is in interference fit with the first stop block (31).

5. The double row roller bearing for a beach vehicle of claim 1 in which: the inner diameter of the outer end of the inner ring (2) is composed of an oblique conical surface and a middle arc transition section.

6. The double row roller bearing for a beach vehicle of claim 1 in which: the retainer (6) is made of glass fiber reinforced nylon.

7. The double row roller bearing for a beach vehicle of claim 4 in which: the sealing ring (32) is made of NBR.