Multi-roller mounting type bearing retainer structure

Abstract

The utility model discloses a multi-roller mounting type bearing retainer structure which comprises a left ring and a right ring, the left ring and the right ring are oppositely arranged, a plurality of column groups are arranged between the left ring and the right ring, the plurality of column groups are annularly arranged on the left ring, and pockets for accommodating external rollers are formed between the adjacent column groups. Each column set is composed of two oppositely-arranged beam columns, the beam columns are cylindrical, and the peripheral wall faces of the beam columns are contact faces used for making local contact with the surface of an external roller. The two beam columns in each column set are in clearance fit, and a coating piece used for coating grease on the surface of an external roller and storing part of excessive grease is arranged between the two beam columns. The cylindrical roller bearing retainer solves the problems that the number of rollers is small and the lubricating performance is poor due to the fact that the number of beam bodies of a traditional cylindrical roller bearing retainer is too large.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing retainers, in particular to a multi-roller mounted bearing retainer structure. Background Art

[0002] Cylindrical roller bearings are widely used, with simple structure, easy use and large axial load capacity. They are widely used in working conditions of large equipment such as engineering machinery. Under working conditions with high load requirements and compact space requirements, traditional cylindrical roller bearing cages cannot meet high load requirements. At the same time, traditional cages are arranged with several beams around them to separate the rollers and form pockets for accommodating the rollers. However, a large number of beams occupy a large amount of space in the cage, resulting in a small number of rollers installed in the cage, which cannot meet working conditions with high roller quantity requirements. Moreover, under working conditions with high load and compact space, the bearing lubrication strength also needs to be high to adapt to the requirements of high load and compact space. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model provides a multi-roller mounted bearing cage structure to solve the problem that the traditional cylindrical roller bearing cage has too many beams, resulting in a small number of rollers and poor lubrication performance.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a multi-roller mounted bearing retainer structure, including a left ring and a right ring, the left ring and the right ring are arranged opposite to each other and a plurality of column groups are arranged between the two, the plurality of column groups are arranged in a circumferential direction on the left ring and pockets for accommodating external rollers are formed between adjacent column groups, each group of the column groups is composed of two oppositely arranged beams, the beams are arranged in a cylindrical shape and the outer peripheral wall surface of the beams is a contact surface for local contact with the surface of the external roller, the two beams in each group of the column groups are clearance-fitted and a coating member for coating the surface of the external roller with grease and storing some excess grease is provided between the two beams.

[0005] The benefits of adopting the above technical solution are: in the above technology, the retaining frame is composed of a left ring and a right ring with several beams arranged between the two. Compared with the setting of several beams arranged circumferentially in the traditional retaining frame, the space in the retaining frame is increased by the cylindrical beams, that is, the wall thickness between the pockets is reduced, so that the force of the roller on the retaining frame is transferred to the beams, and the distance between the rollers can be reduced, thereby increasing the number of rollers placed. At the same time, the coating part is set to coat the roller surface with grease to achieve uniform distribution of grease on the roller surface. At the same time, when there is excessive grease in the retaining frame, part of the excess grease can be stored, thereby avoiding the phenomenon of excessive grease in the retaining frame, and further avoiding the phenomenon of grease throwing or leakage due to excessive grease on the roller surface. By eliminating the beams and reducing the wall thickness between the pockets, the number of rollers can be increased and the space can be compacted, thereby improving the bearing strength of the bearing, thereby meeting high load conditions.

[0006] The utility model is further provided with: the coating part includes two coating plates arranged opposite to each other, the two coating plates are respectively connected to two beams and columns, the outer walls of the two coating plates are respectively raised in the direction of their respective adjacent pockets and form raised portions, the inner wall of the coating plate is recessed with a recessed portion, and the outer wall surface of the raised portion is a contact surface for partially abutting against the outer peripheral wall surface of the external roller.

[0007] The benefit of adopting the above technical solution is that: the raised portion of the coating plate is arranged to coat the roller surface with grease when the roller rolls at high speed, so that the grease on the roller surface can be evenly distributed, so as to avoid the phenomenon of lack of grease when the roller runs at high speed, thereby avoiding the phenomenon of dry running of the roller, and at the same time ensure that the grease on the roller surface is evenly distributed so that under high load conditions, the friction resistance between the roller and the outer ring or inner ring of the bearing will not be too large, causing damage to the roller.

[0008] The utility model is further provided with: the recessed parts of the two coating plates are clearance-matched to form a storage cavity, the ends of the two coating plates are bent toward the storage cavity and the ends of the two coating plates are clearance-matched with adjacent beams to form oil ports, and the two oil ports are connected to the storage cavity.

[0009] The benefit of adopting the above technical solution is that: the storage chamber in the above technology is used to store part of the grease when there is excess grease in the retaining frame, that is, the excess grease is poured into the storage chamber through the oil port to reduce the chance of grease throwing or grease leakage from the roller when the bearing is running. At the same time, the grease can be replenished in time when it is consumed in the later stage to improve the grease circulation.

[0010] The utility model is further configured that: a plurality of rivets are riveted between the left ring and the right ring.

[0011] The benefits of adopting the above technical solution are: the connection strength between the left ring and the right ring is improved by rivet connection, and the space occupied by the retaining frame is further reduced by rivet connection, and the rivet connection can be set at the beam column position to further reduce the exposure of the rivet and the space occupied.

[0012] The utility model is further provided with: the rivet is made of cast copper alloy material.

[0013] The advantages of adopting the above technical solution are: the rivets in the above technology are made of cast copper alloy material, which improves the connection strength between the left ring and the right ring and reduces the space occupied and the overall weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional view of the utility model;

[0015] Figure 2 This is a cross-sectional view of the utility model;

[0016] Figure 3 for Figure 2 A magnified partial view of part A. DETAILED DESCRIPTION

[0017] The utility model provides a multi-roller mounted bearing retainer structure, including a left ring 1 and a right ring 11, the left ring 1 and the right ring 11 are arranged opposite to each other and a plurality of column groups are arranged between the two, the plurality of column groups are arranged in a circumferential direction on the left ring 1 and pockets 12 for accommodating external rollers are formed between adjacent column groups, each group of the column groups is composed of two oppositely arranged beams 2, the beams 2 are arranged in a cylindrical shape and the outer peripheral wall surface of the beams 2 is a contact surface for local contact with the surface of the external roller, the two beams 2 in each group of the column groups are clearance-fitted and a coating member for coating the surface of the external roller with grease and storing part of the excess grease is provided between the two beams 2, the coating member includes two oppositely arranged coating plates 3, the two The coating plates 3 are respectively connected to the two beams 2, and the outer walls of the two coating plates 3 are respectively raised toward the respective adjacent pockets 12 and formed with a raised portion 31. The inner wall of the coating plate 3 is recessed with a recessed portion 33. The outer wall surface of the raised portion 31 is a contact surface for locally abutting the outer peripheral wall surface of the external roller. The recessed portions 33 of the two coating plates 3 are clearance-matched and form a storage cavity 32. The ends of the two coating plates 3 are bent toward the storage cavity 32 and the ends of the two coating plates 3 are clearance-matched with the adjacent beams 2 to form an oil port 34. The two oil ports 34 are both connected to the storage cavity 32. A number of rivets 4 are riveted between the left ring 1 and the right ring 11, and the rivets 4 are made of cast copper alloy.

[0018] The roller described in the above technology is marked as 5 in the accompanying drawings of the specification.

[0019] Take the large non-standard cylindrical roller bearing 500C61054 as an example, the bearing inner diameter is 500, the outer diameter is 610, the width is 54, the raceway center diameter is 555, and the roller size is Due to the limitations of cage strength and rivet hole diameter, the minimum wall thickness between the pockets of the conventional cage is 5 mm. Therefore, the bearing can be loaded with a maximum of 49 rollers.

[0020] When using the cage designed by this patent, the wall thickness limit between the cage pockets is no longer considered, and only the cage column diameter and strength need to be considered. This example uses a cage column with a diameter of 5 mm, that is, a beam column, and the countersunk hole on the end face of the cage cover has a diameter of 6.5 mm and a depth of 2.5 mm. Through reasonable design of the cage column, the center diameter of the inner cage column is mm, the center diameter of the outer cage column is mm, the cage cover and cage column are fixed by riveting. This type of cage can be loaded with 52 rollers; the double cage column structure disperses the force generated by the rollers on the cage to the two cage columns, improving the cage performance; at the same time, the columnar structure of the cage makes production and processing easier.

[0021] This new cylindrical roller bearing cage structure breaks the limitation of the wall thickness of the conventional cage pocket, and increases the number of steel balls in the same-sized cylindrical roller bearing from the conventional 49 rollers to 52. At the same time, with the increase in the number of rollers, the bearing's load-bearing capacity is improved. The rated dynamic load of a conventional 49-roller bearing is 1280KN, and the rated static load is 3180KN. After increasing to 52 rollers, the rated dynamic load of the bearing is 1340KN, and the rated static load is 3380KN. The load-bearing capacity has increased by 200KN compared with the original structure.

[0022] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-roller mounted bearing cage structure, characterized by: It includes a left ring and a right ring, the left ring and the right ring are arranged opposite to each other and several groups of column groups are arranged between the two, the several groups of column groups are arranged in a circumferential direction on the left ring and pockets for accommodating external rollers are formed between adjacent column groups, each group of the column groups is composed of two oppositely arranged beams, the beams are arranged in a cylindrical shape and the outer peripheral wall surface of the beams is a contact surface for local contact with the surface of the external roller, the two beams in each group of the column group are clearance-fitted and a coating member for coating the surface of the external roller with grease and storing some excess grease is provided between the two beams.

2. A multi-roller mounted bearing cage structure according to claim 1, characterized in that: The coating member includes two coating plates arranged opposite to each other, and the two coating plates are respectively connected to two beams and columns. The outer walls of the two coating plates are respectively raised toward the adjacent pockets and form raised portions. The inner walls of the coating plates are recessed with recessed portions, and the outer wall surface of the raised portion is abutting surface for partially abutting against the outer peripheral wall surface of the external roller.

3. The multi-roller mounted bearing cage structure according to claim 2, characterized in that: The recessed parts of the two coating plates are clearance-matched to form a storage cavity, the ends of the two coating plates are bent toward the storage cavity and the ends of the two coating plates are clearance-matched with adjacent beams to form oil ports, and the two oil ports are connected to the storage cavity.

4. The multi-roller mounted bearing cage structure according to claim 1, characterized in that: A plurality of rivets are riveted between the left ring and the right ring.

5. The multi-roller mounted bearing cage structure according to claim 4, characterized in that: The rivet is made of cast copper alloy material.

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