CN213541071U

CN213541071U - Tapered roller bearing

Info

Publication number: CN213541071U
Application number: CN202021049696.4U
Authority: CN
Inventors: 郭长建
Original assignee: Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-06-25
Anticipated expiration: 2030-06-09

Abstract

The utility model provides a tapered roller bearing includes outer lane, inner circle, roller and holder, connects a flange on the big flange external diameter of inner circle, the inside wall of flange is equipped with an oil storage tank. The flange which is opposite to the roller, namely the retainer, is arranged on the large flange of the large opening part of the bearing, and the oil storage groove is arranged on the inner side wall of the flange, so that the loss of lubricating oil of the bearing in the starting process or the running process is reduced, the lubricating oil is helped to flow back to the space between the roller and the raceway to form an effective lubricating film, the friction heating and the abrasion are reduced, and the service life of the bearing is prolonged.

Description

Tapered roller bearing

Technical Field

The utility model relates to a bearing field especially relates to a tapered roller bearing.

Background

The tapered roller bearing commonly used at present comprises a bearing outer ring, a bearing inner ring, a roller and a retainer, the large opening of the conventional bearing is large, the edge of the rib of the inner ring is shallow, and most of lubricating oil flows out of the large opening, so that the lubricating performance is poor, the service life of the bearing is short, and the working efficiency is low.

The tapered roller bearing of chinese patent application No. CN200920222107.5 solves the above problem by connecting a flange to the outer diameter of the large flange of the bearing inner ring. However, although the structure provided in this patent can block the lubricant flowing out from the large opening of the bearing to some extent, the oil blocking function of the flange is limited to normal, and in the starting stage of the bearing, the lubricant may be splashed to a large extent, and a part of the lubricant may still overflow from the opening. The bearings still lose part of the lubricating oil during the start-up phase, thereby affecting the service life of the bearings.

Based on this, the present application is proposed.

Disclosure of Invention

The utility model provides a tapered roller bearing, can reduce the lubricating oil that flows from the big opening portion of bearing, prolong the life of bearing to the not enough of prior art.

In order to achieve the above object, the utility model discloses tapered roller bearing includes outer lane, inner circle, roller and holder, connects a flange, its characterized in that on the big flange external diameter of inner circle: the inner side wall of the flange is provided with an oil storage tank. The upper oil storage groove can increase the space between the flange and the large flange of the inner ring, increase the oil storage volume and further reduce the lost lubricating oil. Simultaneously, because the bearing is at the working process, when lubricating oil was got rid of the flange lateral wall on by centrifugal force, the indent structure also can effectively prevent lubricating oil and be blocked the back secondary and splash, further reduces spilling over of lubricating oil.

The utility model discloses further set up as follows: the oil storage tank is a semicircular groove, so that a part of lubricating oil can flow back to a contact area between the roller and the raceway by utilizing the backflow effect of the semicircular groove after contacting the flange more efficiently, the lubrication is increased, a lubricating oil film is more conveniently formed, and the service life of the bearing is prolonged. The arc-shaped concave design of the oil storage tank can further enlarge the opening of the oil storage tank so as to receive more thrown lubricating oil

The utility model discloses further set up as follows: the oil storage groove and the surface of the large flange of the inner ring are arranged at intervals, so that lubricating oil which is extruded from the contact position of the roller and the raceway to be splashed is conveniently received.

The utility model discloses further set up as follows: the inner side wall of the protruding end of the flange extends towards one side of the roller, so that the oil storage groove is formed into an arc-shaped groove with an angle of 200-205 degrees. Therefore, a semi-surrounding oil storage tank structure is formed between the flange and the flange, so that the amount of lubricating oil flowing out of the oil storage tank is reduced under a static state or a low rotating speed, and the loss of the lubricating oil is reduced.

The utility model discloses further set up as follows: the oil storage tank is an arc-shaped tank, and comprises a near arc tank and a far arc tank which are close to the large flanges, and the included angle between the tangent line of the virtual circle where the near arc tank is located and the inner side wall of the flange is less than 60 degrees.

The utility model has the advantages as follows: the utility model discloses a set up the indent oil storage tank on the inner wall of flange, the structural feature who utilizes the indent has not only increased the space of oil storage, still prevents lubricating oil and is being prevented that the secondary is backsplash and spill over after being blocked, makes the bearing can remain sufficient lubricating oil and lubricate departments such as roller and raceway when starting and in the operation process, has overcome the problem that current lubricating oil can not form effective lubricating oil film in tapered roller bearing work area. The utility model discloses simple structure, processing of being convenient for.

Drawings

Fig. 1 is an overall schematic top view of embodiment 1 of the present invention.

Fig. 2 is a partially enlarged schematic view of fig. 1.

Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.

Fig. 4 is a schematic structural diagram of embodiment 3 of the present invention.

Reference numerals: 1-outer ring, 2-inner ring, 3-roller, 4-cage, 5-bearing large mouth, 6-flange, 7-oil storage tank, 7' -oil storage tank, 601-extension.

Detailed Description

The utility model provides a tapered roller 3 bearing, including outer lane 1, inner circle 2, roller 3 and holder 4, connect a flange 6 on the big flange external diameter of inner circle 2, for reducing the lubricating oil loss of bearing in the start-up process or the operation in-process, the inside wall of flange 6 is provided with oil storage tank 7.

The following detailed description is to be read with reference to the drawings and the accompanying detailed description.

Embodiment 1 this embodiment provides a tapered roller 3 bearing, which includes an outer ring 1, an inner ring 2, rollers 3 and a basket-shaped cage 4, wherein inclined surfaces are provided on opposite side walls of the inner ring 2 and the outer ring 1, so that when the inner ring 2 is engaged with the outer ring 1, a tapered raceway for the rollers 3 to fit is formed. The rollers 3 are fitted in the tapered raceways by means of a basket-shaped cage 4 and are held in line with the centers of the tapered raceways. In this embodiment, the basket-shaped retainer 4 extends from the small opening side where the small flange is located into the raceway formed by the gap between the inner ring 2 and the outer ring 1, while the large opening side where the large flange is located is not involved. A flange 6 aligned with the outer diameter edge is arranged on the outer diameter edge of the large flange of the large opening part 5 of the bearing, the flange 6 is perpendicular to the end surface of the large flange, and the protruding part of the flange is arranged in a hanging way. The inner wall of the flange 6 is provided with a semicircular oil reservoir 77, with the roller 3 being located on the inside.

Referring to fig. 2, the semicircular oil storage groove 77 is disposed in the middle of the inner side wall of the flange 6, and a certain gap d1 is formed between the semicircular oil storage groove and the end surface of the large flange, and the gap d1 is usually not less than 0.5mm, so that the semicircular oil storage groove is convenient to process, and the semicircular oil storage groove 7 is not tightly attached to the end surface of the large flange, so as to receive lubricating oil splashed from between the roller 3 and the raceway. Moreover, the semicircular oil storage groove 77 can utilize the structural characteristic that the arc shape is concave inwards to help the lubricating oil splashed into the oil storage groove to flow back to the contact area between the roller 3 and the raceway, so that the lubrication is increased, a lubricating oil film is more conveniently formed, and the service life of the bearing is prolonged. Compared with other arc-shaped structures, the backflow effect of the semicircular structure is more obvious, and the effect is better.

Embodiment 2 as shown in fig. 3, this embodiment is different from embodiment 1 in that: the inner side wall of the protruding end of the flange 6 extends towards one side of the roller 3 to form an extending portion 601, a certain gap d2 exists between the inner end face of the extending portion 601 and the inner side wall of the flange 6, the length of the gap d2 needs to enable the oil storage tank 7 ' to form an arc-shaped groove with a large angle, the angle is 200-205 degrees optimally, and therefore a semi-enclosed oil storage tank 7 ' structure is formed between the flange 6 and the blocking edge, so that the lubricating oil amount flowing out of the oil storage tank 7 ' is reduced under a static state or a low rotating speed, and the loss of the lubricating oil is reduced.

In the present embodiment, the clearance d2 is usually 0.2-0.6 mm, which can be adjusted according to the distance between the outer diameter of the large flange of the specific bearing and the retainer 4 in the large opening 5 of the bearing, so as to form a semi-enclosed structure capable of providing oil storage performance while ensuring a safe distance.

Embodiment 3 as shown in fig. 4, this embodiment is different from embodiment 2 in that: the arc-shaped groove structure of the oil storage groove 7' is in a hook shape, the hook part of the oil storage groove is arranged close to the extending part 601, the structure reduces the radian between the arc-shaped groove and the retaining shoulder, and the lubricating oil is favorably slowed down in impact force and prevented from splashing when the lubricating oil rushes into the arc-shaped groove.

To sum up, the utility model provides a tapered roller 3 bearing, it is through set up one on the big flange of the big oral area 5 of bearing and be the flange 6 that holder 4 set up relatively with roller 3 to be provided with oil storage tank 7 in the inside wall of flange 6, thereby reduce the lubricating oil loss of bearing in the start-up process or the operation in-process, and help lubricating oil flow back to form lubricated membrane effectively between roller 3 and the raceway, reduce the friction generate heat and wear, improve the life of bearing.

Claims

1. The utility model provides a tapered roller bearing, includes outer lane, inner circle, roller and holder, connects a flange on the big flange external diameter of inner circle, its characterized in that: a semicircular oil storage tank is arranged on the inner side wall of the flange; the inner side wall of the protruding end of the flange extends towards one side of the roller, so that the oil storage groove is formed into an arc-shaped groove with an angle of 200-205 degrees.

2. A tapered roller bearing as claimed in claim 1, wherein: the oil storage groove and the surface of the large flange of the inner ring are arranged at intervals.

3. A tapered roller bearing as claimed in claim 1, wherein: the oil storage tank is an arc-shaped tank, and comprises a near arc tank and a far arc tank which are close to the large flanges, and the included angle between the tangent line of the virtual circle where the near arc tank is located and the inner side wall of the flange is less than 60 degrees.