CN215950127U

CN215950127U - Long and short roller staggered four-row cylindrical roller bearing for rolling mill

Info

Publication number: CN215950127U
Application number: CN202122645588.4U
Authority: CN
Inventors: 汪耀军; 汪岳民; 刘久成; 汪庆光; 汪庆坤
Original assignee: Linqing City Walin Seiko Rolling Mail Bearing Co ltd
Current assignee: Linqing City Walin Seiko Rolling Mail Bearing Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-03-04
Anticipated expiration: 2031-11-01

Abstract

The utility model provides a long and short roller staggered four-row cylindrical roller bearing for a rolling mill, which relates to the technical field of bearings and comprises the following components: an inner ring; a roller is arranged on the outer side of the inner ring; the outer side of the inner ring is sleeved with a retainer; the outside cover of roller is equipped with the outer lane, and the oil inlet of the oil filler point of the oil filler groove of outer lane communicates the inside and outside both sides of bearing, through the rolling post A of staggered arrangement in two rows of rolling post B and the outside circular cone raceway of staggered arrangement in two raceways in the middle of the inner circle, make two sets of roller B when the pivoted, can not continuous synchronization rotate, the stress that the inner circle received has been reduced, bearing shock resistance has been improved, traditional four rows of cylindrical roller bearing has been solved, in the time of the use, two inboard rolling posts can make the inner circle produce great stress at the seam crossing of two rolling posts if synchronous rotation, lead to the inner circle to appear the crack very easily, make the bearing damage problem.

Description

Long and short roller staggered four-row cylindrical roller bearing for rolling mill

Technical Field

The utility model relates to the technical field of bearings, in particular to a long and short roller staggered four-row cylindrical roller bearing for a rolling mill.

Background

In mechanical equipment, bearings are very common parts, and four-row cylindrical roller bearings are the most common parts in rolling mills, and the rolling mills use the bearings to assist rotation and also play a role in limiting through part of special bearings.

However, in the conventional four-row cylindrical roller bearing, two rolling columns with equal horizontal length are usually installed in a retainer of the bearing, and the two rolling columns are a group and are positioned in the same raceway at one end of an inner ring; meanwhile, when the traditional four-row cylindrical roller bearing is lubricated by using lubricating oil, the lubricating oil covers the surface of the internal part of the bearing, so that the lubricating oil is easily consumed, and part of the lubricating oil is leaked from the inside of the bearing and wasted.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a long and short roller staggered four-row cylindrical roller bearing for a rolling mill, which has two sets of rolling columns B staggered, so that when the bearing rotates, the two sets of rolling columns B do not continuously rotate synchronously, and the stress on a fixed ring a is reduced.

The utility model provides a long and short roller staggered four-row cylindrical roller bearing for a rolling mill, which specifically comprises: an inner ring; a roller is arranged on the outer side of the inner ring, and a rolling column B of the roller is clamped in a roller path on the inner side of a fixed ring A of the inner ring; a retainer is sleeved on the outer side of the inner ring, and a rolling column A and a rolling column B of the roller are clamped in a clamping hole of a main body of the retainer; the outer side of the roller is sleeved with an outer ring, and an oil inlet hole of an oil injection groove of the outer ring is communicated with the inner side and the outer side of the bearing.

Optionally, the inner ring comprises: the inner part of the fixed ring A is provided with four raceways, two raceways on the inner side of the fixed ring A are of a circular structure, and two raceways on the outer side of the fixed ring A are of a fifteen-degree inclined conical structure; the lower end face of the outer side roller path of the fixed ring A is provided with a circular clamping groove; the protective beads are clamped inside the clamping grooves of the fixing ring A.

Optionally, the roller comprises: the right side of the rolling column A is provided with an arc-shaped clamping groove, the fifteen-degree-angle inclined clamping of the two groups of rolling columns A is clamped into the two raceways on the outer side of the fixed ring A, and the inner part of the arc-shaped clamping groove of the rolling column A is clamped with a protection bead; and the two groups of rolling columns B are positioned on the inner sides of the two groups of rolling columns A.

Optionally, the holder comprises: the clamping device comprises a main body, a clamping device and a clamping device, wherein the left side and the right side of the main body are provided with clamping holes which are circumferentially arranged; lead the oil groove, lead the oil groove circumference and offer the lateral surface at the main part.

Optionally, the outer ring comprises: the inner surface of the fixed ring B is provided with two raceways, the left side of the fixed ring B is a tapered raceway inclined at a fifteen-degree angle, and the right side of the fixed ring B is a circular raceway; the oil filling groove is formed in the outer side of the fixing ring B, and six oil inlet holes which are circumferentially arranged are formed in the lower end face of the oil filling groove.

Advantageous effects

According to the four-row cylindrical roller bearing of each embodiment of the utility model, compared with the traditional four-row cylindrical roller bearing, two rows of rolling columns B which are staggered in two raceways in the middle of the inner ring and the rolling columns A which are staggered in the outer conical raceways are adopted, so that two groups of rollers B cannot continuously and synchronously rotate when rotating, the stress on the inner ring is reduced, and meanwhile, part of the stress on the inner ring is transmitted through the rolling columns A and is born together with the outer ring through the rolling columns A which are arranged in a conical shape, the shock resistance of the bearing is further improved, and the service life of the bearing is prolonged.

In addition, the oil guide groove is formed in the upper end of the retainer, partial lubricating oil is reserved in the oil guide groove after the lubricating oil is injected through the oil injection port, the lubricating oil in the oil guide groove is separated from the oil guide groove through the centrifugal force generated by rotation of the retainer, the rolling column A and the rolling column B are lubricated, the utilization rate of the lubricating oil is improved, and the waste of the lubricating oil is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

The drawings in the following description relate to some embodiments of the utility model only and are not intended to limit the utility model.

In the drawings:

FIG. 1 shows a schematic perspective cross-sectional view of a four-row cylindrical roller bearing according to an embodiment of the utility model;

fig. 2 shows an overall structural schematic view of a four-row cylindrical roller bearing according to an embodiment of the present invention;

FIG. 3 illustrates an enlarged partial schematic view at A of FIG. 1 of a four row cylindrical roller bearing according to an embodiment of the present invention;

FIG. 4 shows a schematic perspective cross-sectional view of an inner race of a four-row cylindrical roller bearing according to an embodiment of the present invention;

FIG. 5 shows a schematic cross-sectional view of a four-row cylindrical roller bearing according to an embodiment of the utility model.

List of reference numerals

1. An inner ring; 101. a fixed ring A; 102. a protective bead;

2. a roller; 201. a rolling column A; 202. a rolling column B;

3. a holder; 301. a main body; 302. an oil guide groove;

4. an outer ring; 401. a fixed ring B; 402. and an oil injection groove.

Detailed Description

In order to make the objects, aspects and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like reference symbols in the various drawings indicate like elements.

Example (b): please refer to fig. 1 to 5:

the utility model provides a long and short roller staggered four-row cylindrical roller bearing for a rolling mill, which comprises: an inner ring 1; the roller 2 is arranged on the outer side of the inner ring 1, and a rolling column B202 of the roller 2 is clamped in a raceway on the inner side of a fixed ring A101 of the inner ring 1; the outer side of the inner ring 1 is sleeved with a retainer 3, and a rolling column A201 and a rolling column B202 of the roller 2 are clamped in a clamping hole of a main body 301 of the retainer 3; the outer side of the roller 2 is sleeved with an outer ring 4, and an oil inlet hole of an oil filling groove 402 of the outer ring 4 is communicated with the inner side and the outer side of the bearing.

As shown in fig. 1 and 4, the inner ring 1 includes: the fixing ring A101 is of a circular structure, four rolling ways are formed in the fixing ring A101, two rolling ways on the inner side of the fixing ring A101 are of a circular structure, and two rolling ways on the outer side of the fixing ring A101 are of a fifteen-degree inclined conical structure; a circular clamping groove is formed in the lower end face of the outer side raceway of the fixing ring A101; the fixed ring A101 supports the installation of the roller 2 and the outer ring 4 and is used for fixing the position of a bearing; the protective beads 102 are of spherical structures which are arranged circumferentially, and the protective beads 102 are clamped in the clamping grooves of the fixing ring A101; the protective beads 102 assist the rotation of the rolling column a201, and reduce the friction between the rolling column a201 and the fixed ring a 101.

As shown in fig. 1 and 4, the roller 2 includes: the rolling columns A201 are of cylindrical structures which are arranged in a circumferential mode, arc-shaped clamping grooves are formed in the right sides of the rolling columns A201, the two groups of rolling columns A201 are obliquely clamped into the two rolling ways on the outer side of the fixing ring A101 in a fifteen-degree angle mode, and the protective beads 102 are clamped into the arc-shaped clamping grooves of the rolling columns A201; the rolling column A201 can bear the force which is transmitted by the fixed ring A101 and faces the left side and the right side of the bearing, so that the force is shared by the fixed ring A101 and the fixed ring B401, the fixed ring A101 is protected, and the rolling column B202 and the bearing rotate normally; the rolling columns B202 are of columnar structures, and the two groups of rolling columns B202 are positioned on the inner sides of the two groups of rolling columns A201; the rolling column B202 and the rolling column a201 jointly rotate the bearing, and simultaneously, the rolling columns B202 and the rolling columns a201 on the left and the right drive the two outer rings 4 on the left and the right respectively.

As shown in fig. 1 and 4, the holder 3 includes: the main body 301, the main body 301 is a circular structure, and the left and right sides of the main body 301 are provided with clamping holes which are circumferentially arranged; the body 301 serves to limit the position of the roller 2; the oil guide groove 302 is of a rectangular structure, and the oil guide groove 302 is circumferentially arranged on the outer side surface of the main body 301; the oil guide groove 302 may store the lubricating oil introduced into the interior of the bearing, and may release the stored lubricating oil when the bearing rotates.

As shown in fig. 1 and 4, the outer ring 4 includes: the fixing ring B401 is of a circular structure, two raceways are formed in the inner surface of the fixing ring B401, the left side of the fixing ring B401 is a tapered raceway inclined at a fifteen-degree angle, and the right side of the fixing ring B401 is a circular raceway; the fixed ring B401 fixes the whole bearing and simultaneously rotates under the action of the roller 2 and the inner ring 1; the oil filling groove 402 is of a circular structure, the oil filling groove 402 is formed in the outer side of the fixing ring B401, and six oil inlet holes which are circumferentially arranged are formed in the lower end face of the oil filling groove 402; the oil sump 402 feeds the lubricating oil into the interior of the bearing through the oil inlet hole.

The specific use mode and function of the embodiment are as follows: according to the utility model, the left side and the right side of the fixing ring A101 are respectively sleeved with a main body 301, rolling columns B202 are arranged in two raceways on the inner side of the fixing ring A101, rolling columns A201 are arranged in two raceways on the outer side, the rolling columns A201 and the rolling columns B202 are simultaneously ensured to be clamped in clamping holes of the main body 301, protective beads 102 are arranged in clamping grooves of the fixing ring A101, and then the fixing ring B401 is sleeved on the outer sides of the rolling columns A201 and the rolling columns B202; during the use, inside lubricating oil got into the bearing through the inlet port of oiling groove 402 lower extreme face, lubricate the bearing, partial lubricating oil can persist in the inside of leading oil groove 302 simultaneously, when the bearing is rotatory, because two sets of rollers 2 staggered arrangement, make it can not produce continuous synchronous rotation when rolling, prevent that two sets of rollers 2 from continuous synchronous rotation, make stress locally increase in the position of rolling post B202 and retainer plate A101 contact, normally produced stress can be transmitted for rolling post A201 by retainer plate A101 simultaneously, and undertake jointly through rolling post A201 and retainer plate B401.

Finally, it should be noted that, when describing the positions of the components and the matching relationship therebetween, the present invention is usually illustrated by one/a pair of components, however, it should be understood by those skilled in the art that such positions, matching relationship, etc. are also applicable to other/other pairs of components.

The above description is intended to be illustrative of the present invention and not to limit the scope of the utility model, which is defined by the claims appended hereto.

Claims

1. The utility model provides a crisscross four rows of cylindrical roller bearings of long short roller for rolling mill which characterized in that includes: an inner ring (1); a roller (2) is installed on the outer side of the inner ring (1), and a rolling column B (202) of the roller (2) is clamped in a roller path on the inner side of a fixed ring A (101) of the inner ring (1); the outer side of the inner ring (1) is sleeved with a retainer (3), and a rolling column A (201) and a rolling column B (202) of the roller (2) are clamped in a clamping hole of a main body (301) of the retainer (3); the outer side of the roller (2) is sleeved with an outer ring (4), and an oil inlet hole of an oil filling groove (402) of the outer ring (4) is communicated with the inner side and the outer side of the bearing.

2. The rolling mill of claim 1, wherein the four rows of cylindrical roller bearings with staggered long and short rollers are characterized in that: the inner ring (1) comprises: the inner part of the fixed ring A (101) is provided with four raceways, two raceways on the inner side of the fixed ring A (101) are of a circular structure, and two raceways on the outer side of the fixed ring A (101) are of a fifteen-degree inclined conical structure; the lower end face of the outer side raceway of the fixing ring A (101) is provided with a circular clamping groove; the protective bead (102), the protective bead (102) clamps inside the draw-in groove of retainer plate A (101).

3. The rolling mill of claim 1, wherein the four rows of cylindrical roller bearings with staggered long and short rollers are characterized in that: the roller (2) comprises: the right side of the rolling column A (201) is provided with an arc-shaped clamping groove, fifteen-degree-angle inclined clamping of the two groups of rolling columns A (201) is performed in the two rolling ways on the outer side of the fixing ring A (101), and the inside of the arc-shaped clamping groove of the rolling column A (201) is clamped with a protection bead (102); and rolling columns B (202), wherein the two groups of rolling columns B (202) are positioned at the inner sides of the two groups of rolling columns A (201).

4. The rolling mill of claim 1, wherein the four rows of cylindrical roller bearings with staggered long and short rollers are characterized in that: the holder (3) comprises: the clamping device comprises a main body (301), wherein clamping holes which are circumferentially arranged are formed in the left side and the right side of the main body (301); the oil guide groove (302), the oil guide groove (302) is circumferentially arranged on the outer side surface of the main body (301).

5. The rolling mill of claim 1, wherein the four rows of cylindrical roller bearings with staggered long and short rollers are characterized in that: the outer ring (4) comprises: the inner surface of the fixing ring B (401) is provided with two raceways, the left side of the fixing ring B (401) is a tapered raceway inclined at a fifteen-degree angle, and the right side of the fixing ring B (401) is a circular raceway; the oil filling device comprises an oil filling groove (402), wherein the oil filling groove (402) is formed in the outer side of the fixing ring B (401), and six oil inlet holes which are circumferentially arranged are formed in the lower end face of the oil filling groove (402).