阅读说明：本技术 改进的单列圆柱滚子轴承 (Improved single-row cylindrical roller bearing ) 是由 张煦 吴非 燕萍 李鑫辉 孙岳松 吴琼 赵霞 孙晓丽 于 2019-10-29 设计创作，主要内容包括：本发明属于轴承装备制造技术领域,具体涉及一种改进的单列圆柱滚子轴承,包括内圈、外圈、保持架和滚子,滚子通过保持架保持在内圈和外圈之间；所述保持架两端端面上分别设置有若干通孔,通孔设置在轴承回转中心径及保持架兜孔中心交点处,滚子两端端面上设置与通孔相对应的沉孔,通孔和沉孔之间通过连接件连接。此发明的轴承保持架尺寸小,能够装入更大尺寸的滚动体,在有限的空间里,极大地增加轴承承受高载荷与冲击载荷的能力,并在快速加速的工况下,减少摩擦生热,不易卡死。(The invention belongs to the technical field of bearing equipment manufacturing, and particularly relates to an improved single-row cylindrical roller bearing which comprises an inner ring, an outer ring, a retainer and rollers, wherein the rollers are kept between the inner ring and the outer ring through the retainer; the end faces of the two ends of the retainer are respectively provided with a plurality of through holes, the through holes are arranged at the intersection of the diameter of the bearing rotation center and the center of the pocket of the retainer, the end faces of the two ends of the roller are provided with counter bores corresponding to the through holes, and the through holes and the counter bores are connected through connecting pieces. The bearing retainer disclosed by the invention is small in size, can be filled with rolling bodies with larger sizes, greatly increases the capacity of bearing high load and impact load of the bearing in a limited space, reduces friction heat generation under the working condition of rapid acceleration, and is not easy to block.)

1. Improved single-row cylindrical roller bearing, its characterized in that: the roller bearing comprises an inner ring, an outer ring, a retainer and a roller, wherein the roller is kept between the inner ring and the outer ring through the retainer; the end faces of the two ends of the retainer are respectively provided with a plurality of through holes, the through holes are arranged at the intersection of the diameter of the bearing rotation center and the center of the pocket of the retainer, the end faces of the two ends of the roller are provided with counter bores corresponding to the through holes, and the through holes and the counter bores are connected through connecting pieces.

2. The improved single row cylindrical roller bearing of claim 1, wherein: the counter bore is arranged in the center of the end faces of the two ends of the roller.

3. The improved single row cylindrical roller bearing of claim 1, wherein: the connecting piece is an elastic rolling pin, two ends of the elastic rolling pin are respectively positioned in the retainer through hole and the roller counter bore, and the elastic rolling pin does not protrude out of the end face of the retainer.

4. The improved single row cylindrical roller bearing of claim 1, wherein: the outer diameter of the retainer window beam is provided with a trapezoidal groove.

5. The improved single row cylindrical roller bearing of claim 1, wherein: c-shaped grooves are formed in four corners of the retainer pocket.

6. The improved single row cylindrical roller bearing of claim 1, wherein: the outer diameter of the retainer in the circumferential direction is provided with a plurality of three-section arc oil grooves, and the three-section arc oil grooves are in smooth transition with the outer diameter of the retainer in the circumferential direction.

7. The improved single row cylindrical roller bearing of claim 6, wherein: the three-section arc oil groove comprises large-diameter grooves at two ends and a small-diameter groove in the middle, and the large-diameter grooves at the two ends are in smooth transition with the outer diameter of the retainer in the circumferential direction.

8. The improved single row cylindrical roller bearing of claim 1, wherein: the pockets of the retainer are straight pockets.

9. The improved single row cylindrical roller bearing of claim 1, wherein: the retainer is an integral retainer.

10. The improved single row cylindrical roller bearing of claim 1, wherein: a flange is arranged on one side of the inner ring and is integrally arranged with the inner ring; and a flat retainer ring is arranged on the other side of the inner ring and is mutually independent from the inner ring.

Technical Field

The invention belongs to the technical field of bearing equipment manufacturing, and particularly relates to an improved single-row cylindrical roller bearing.

Background

The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The bearing generally comprises an outer ring, an inner ring, a rolling body and a retainer, wherein the rolling body is a cylindrical roller bearing with cylindrical rollers, the rollers are arranged in parallel in the cylindrical roller bearing, and a spacing retainer or a spacer block is arranged between the rollers, so that the inclination of the rollers or the mutual friction between the rollers can be prevented, and the increase of the rotating torque is effectively prevented. The cylindrical roller and the raceway are in line contact bearing. The load capacity is large, and the radial load is mainly born. The friction between the rolling body and the flange of the ferrule is small, and the bearing is suitable for high-speed rotation. The existing cylindrical roller bearing is not compact in structure, low in load bearing capacity and short in service life, and needs to be improved.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide an improved single-row cylindrical roller bearing which has a compact structure, a high bearing capacity and a prolonged service life.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the improved single-row cylindrical roller bearing comprises an inner ring, an outer ring, a retainer and rollers, wherein the rollers are kept between the inner ring and the outer ring through the retainer; the end faces of the two ends of the retainer are respectively provided with a plurality of through holes, the through holes are arranged at the intersection of the diameter of the bearing rotation center and the center of the pocket of the retainer, the end faces of the two ends of the roller are provided with counter bores corresponding to the through holes, and the through holes and the counter bores are connected through connecting pieces.

Further, the counter bore is arranged in the center of the end faces of the two ends of the roller.

Furthermore, the connecting piece is an elastic rolling pin, two ends of the elastic rolling pin are respectively positioned in the retainer through hole and the roller counter bore, and the elastic rolling pin does not protrude out of the end face of the retainer.

Further, the outer diameter of the retainer window beam is provided with a trapezoidal groove.

Furthermore, C-shaped grooves are formed in four corners of the retainer pocket.

Furthermore, the outer diameter of the retainer in the circumferential direction is provided with a plurality of three-section arc oil grooves, and the three-section arc oil grooves are in smooth transition with the outer diameter of the retainer in the circumferential direction.

Further, the three-section arc oil groove comprises large-diameter grooves at two ends and a small-diameter groove in the middle, and the large-diameter grooves at the two ends are in smooth transition with the outer diameter of the retainer in the circumferential direction.

Further, the pockets of the cage are straight pockets.

Further, the retainer is an integral retainer.

Furthermore, a flange is arranged on one side of the inner ring, and the flange and the inner ring are integrally arranged; and a flat retainer ring is arranged on the other side of the inner ring and is mutually independent from the inner ring.

The invention has the beneficial effects that: the bearing retainer disclosed by the invention is small in size, can be filled with rolling bodies with larger sizes, greatly increases the capacity of bearing high load and impact load of the bearing in a limited space, reduces friction heat generation under the working condition of rapid acceleration, and is not easy to block.

Drawings

FIG. 1 is a schematic view of a bearing structure;

FIG. 2 is a schematic view of a roller;

FIG. 3 is a perspective view of the cage;

FIG. 4 is a schematic view of the spring roll pin;

FIG. 5 is a side view of the spring roll pin of FIG. 4;

FIG. 6 is a schematic view of a cage dovetail groove;

FIG. 7 is a schematic view of a C-shaped groove of the cage;

FIG. 8 is a schematic view of a three-segment arc oil groove of the retainer;

in the figure: the structure comprises 1-outer ring, 2-inner ring, 3-roller, 4-flat retainer ring, 5-retainer, 6-elastic rolling pin, 7-trapezoidal groove, 8-C groove, 9-three-section arc oil groove, 10-retainer through hole, 11-roller counter bore, 12-retainer window beam and 13-retainer pocket hole.

Detailed Description

In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.

Referring to fig. 1-8, an improved single row cylindrical roller bearing includes an inner ring 2, an outer ring 1, a cage 5, and rollers 3, the rollers 3 being held between the inner ring 2 and the outer ring 1 by the cage 5; the end faces of two ends of the retainer 5 are respectively provided with a plurality of through holes 10, the through holes 10 are arranged at the intersection of the diameter of the bearing rotation center and the center of a pocket of the retainer, the centers of the end faces of two ends of the roller 3 are provided with counter bores 11 corresponding to the through holes 10, and the through holes 10 are connected with the counter bores 11 through elastic rolling pins 6. The elastic rolling pin 6 penetrates through the retainer through hole 10 and the roller counter bore 11 to connect the retainer and the roller counter bore into an assembly which cannot be disassembled. When the roller 3 normally rotates in the bearing raceway, the roller 3 is not in contact with the elastic rolling pin 6, and when the roller 3 deviates in the raceway due to impact load bearing or rapid speed change of the bearing, the retainer 5 and the elastic rolling pin 6 can ensure that the roller returns to a correct rotating position, so that the service life and the reliability of the bearing are improved.

Furthermore, two ends of the elastic rolling pin 6 are respectively positioned in the retainer through hole 10 and the roller counter bore 11, and the elastic rolling pin 6 does not protrude out of the end face of the retainer. The connecting piece selects the elastic roll pin, the fastening capacity of the connecting piece and the retainer is enhanced, the play is avoided, in addition, the elastic roll pin does not protrude out of the end face of the retainer, the width of the retainer and the length of the roller are increased, and the bearing capacity is improved.

Further, the outer diameter of the cage beam 12 is provided with a trapezoidal groove 7. The trapezoidal groove 7 reduces the weight of the retainer, has important significance for the light weight of the bearing, enables the retainer to operate flexibly, reduces the starting torque and reduces the cost.

Furthermore, C-shaped grooves 8 are arranged at four corners of the retainer pocket. The contact area between the retainer 5 and the roller 3 is reduced, the frictional heat is generated, the oil storage amount is increased, and the lubricating capability is improved.

Furthermore, the outer diameter of the retainer in the circumferential direction is provided with a plurality of three-section arc oil grooves 9, and the three-section arc oil grooves 9 are in smooth transition with the outer diameter of the retainer in the circumferential direction. The three-section arc oil groove enables the outer diameter of the retainer to be in smooth transition with the oil groove, and has the functions of guiding lubricating oil and quickly forming an oil film.

Further, the three-section arc oil groove comprises large-diameter grooves R1 at two ends and a small-diameter groove R in the middle, R1 is larger than R, and the large-diameter grooves R1 at two ends are in smooth transition with the outer diameter of the retainer in the circumferential direction.

Further, the pockets 13 of the cage are straight pockets. The cage pocket is designed to be a straight pocket, no locking amount exists, the capacity of the straight pocket for the roller is small, so that the friction heat generation of the roller and the cage is reduced under the high-speed-change working condition of the bearing, the processing procedures of the straight pocket are reduced, the processing is simple, and the cost is reduced.

Further, the holder 5 is an integral holder. The integrated retainer has good dynamic balance performance, high strength and small beam width, and can be filled with rollers with larger sizes or more rollers.

Furthermore, one side of the inner ring 2 is provided with a flange, and the flange and the inner ring are integrally arranged; the other side of the inner ring 2 is provided with a flat retainer ring 4, and the flat retainer ring 4 and the inner ring 2 are mutually independent. Both sides of the outer ring 1 are provided with flanges which are integrally arranged with the outer ring. The design of the inner ring flat retainer ring 4 is convenient for the assembly of the roller and ensures that the roller cannot fall off.

The bearing retainer disclosed by the invention is small in size, can be filled with rolling bodies with larger sizes, greatly increases the capacity of bearing high load and impact load of the bearing in a limited space, reduces friction heat generation under the working condition of rapid acceleration, and is not easy to block. The bearing of the invention gives consideration to the characteristics of the performance and light weight of the large-scale pulley bearing for sea decoration, and makes a contribution to the field of sea decoration in China.

The above list is only the preferred embodiment of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.