Copper retainer tapered roller bearing without inner space ring

Abstract

The utility model relates to a copper retainer tapered roller bearing without an inner space ring. The copper retainer tapered roller bearing comprises a double-raceway outer ring, two single-raceway inner rings, double rows of tapered rollers and two rows of retainers, each row of tapered rollers are contained in respective retainer pocket holes, and the double-row retainers filled with the tapered rollers are correspondingly placed between the double-raceway outer ring and the two single-raceway inner rings; the end surfaces between the two single-raceway inner rings are in direct contact; each row of retainers comprises a large end ring, a small end ring and a plurality of retainer beams, the large end ring and the small end ring are integrally formed, the retainer beams are evenly distributed between the large end ring and the small end ring, and a retainer pocket is defined by every two adjacent retainer beams, the large end ring and the small end ring; a plurality of arc grooves are formed in the inner diameter of a large end ring and the inner diameter of a small end ring of the retainer; the bearing adopts the design without an inner space ring, and the structure and the material of the retainer are changed, so that the friction can be reduced, the noise can be reduced, the running performance can be improved, the service life of the bearing can be prolonged, and the reliability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the bearing product applied to metallurgical machinery field, concretely relates to a copper retainer cage tapered roller bearing without inner spacer ring belongs to bearing field. BACKGROUND

[0002] Most of the rolling mill bearings work in high speed, impact, and reverse rotation conditions, which requires the bearing to have higher reliability. At this time, the traditional steel plate stamping retainer bearing has large noise, low service life and poor reliability. The bearing damage often causes equipment downtime, affects production capacity and reduces product production efficiency. SUMMARY

[0003] In view of the technical problem of the above-mentioned bearing in its metallurgical field, the purpose of the utility model is to provide a copper retainer cage tapered roller bearing without inner spacer ring, which changes the material of the retainer and uses solid brass retainer instead of steel plate stamping retainer, with high reliability and good use.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of: a copper retainer cage tapered roller bearing without inner spacer ring, comprising: a double raceway outer ring, two single raceway inner rings, double row tapered rollers and two rows of retainers; each row of tapered rollers is contained in the respective retainer pocket, and the double row retainer containing the tapered rollers is placed between the double raceway outer ring and the two single raceway inner rings, and each tapered roller is in rolling contact with the raceway of the double raceway outer ring and the single raceway inner ring; the end face between the two single raceway inner rings adopts direct contact form; each row of retainers comprises an integrally formed large end ring, a small end ring and a plurality of retainer beams uniformly distributed between the large end ring and the small end ring, and each adjacent two retainer beams and the large end ring and the small end ring form a retainer pocket; a plurality of arc grooves are arranged on the inner diameter of the large end ring and the inner diameter of the small end ring;

[0005] Further, the double raceway outer ring has an oil hole at the center position of the outer diameter for bearing lubrication and oil injection;

[0006] In the above-mentioned scheme, the arc grooves arranged on the inner diameter of the retainer enhance the formation ability of the oil film, reduce friction and noise;

[0007] Further, the positions of the arc grooves on the inner diameter of the large end ring and the positions of the arc grooves on the inner diameter of the small end ring are staggered in space; which is beneficial to the uniformity of oil;

[0008] Further, the number of arc grooves on the inner diameter of the large end ring and the number of arc grooves on the inner diameter of the small end ring are the same, and each is provided with 4-6 arc grooves.

[0009] Further, the inner diameter of the large end ring of the retainer corresponds to the position of the large flange of the inner ring, and the inner diameter of the small end ring of the retainer corresponds to the position of the small flange of the inner ring; the inner diameter of the large end ring and the inner diameter of the small end ring are respectively arranged with a small gap between the large flange of the inner ring and the small flange of the inner ring, so as to form a guide to enable the rollers to run in a correct posture.

[0010] Further, the small gap is arranged in a range of 0.3-0.8 mm.

[0011] In the bearing structure, a lock roller structure is further arranged, a long groove is arranged on the outer diameter of each of the retainer beams, and the long groove is a lock roller groove, so that the machining is simple and the assembly is easy.

[0012] Further, the inner walls on both sides of the lock roller groove are respectively formed with a thickness area of 2 mm with respect to the edges of the retainer beams; a assembly tool with a width greater than that of the long groove is arranged in the long groove; during assembly, the assembly tool is inserted into the long groove; since the retainer is made of brass and has a relatively low hardness and the thickness area of 2 mm is relatively thin, the assembly tool supports the retainer beam in the long groove to be deformed, the thickness area of 2 mm is inclined to the center of the pocket, so as to reduce the opening size of the pocket of the retainer; after deformation, the opening size of the pocket is smaller than the diameter of the roller, so as to lock the roller.

[0013] The assembly tool is an existing assembly tool in the field, which is used only during assembly of the bearing and is removed after the lock roller is completed.

[0014] The bearing has the following beneficial effects:

[0015] The bearing adopts a design without an inner spacer ring, and the structure and material of the retainer are changed, so that the bearing can reduce friction, reduce noise, improve running performance, increase service life, and have high reliability.

[0016] In terms of the structure of the retainer, the large inner diameter and the small inner diameter of the retainer are respectively arranged with a small gap with respect to the large flange and the small flange of the inner ring, so as to form a guide to enable the rollers to run in a correct posture; secondly, the inner diameter of the retainer is designed through a circular groove, so as to enhance the formation ability of the oil film, reduce friction, and reduce noise.

[0017] Meanwhile, in terms of the material of the retainer, the solid brass retainer is used to replace the traditional steel plate punched retainer, so that the retainer has high reliability and is good to use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure diagram of the copper retainer conical roller bearing without an inner spacer ring.

[0019] Figure 2 It is a structure diagram of the retainer. Figure 1 ​

[0020] In the figure, 1, outer ring, 2, inner ring, 3, tapered roller, 4, cage, 4.1, large end ring, 4.2, small end ring, 4.3, cage beam, 5, circular arc groove, 2.1, inner ring large rib, 2.2, inner ring small rib, 6, lock roller groove, 6.1, 2mm thickness area. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] As Figure 1 , 2 A copper cage tapered roller bearing without inner spacer ring, comprising: a double raceway outer ring 1, two single raceway inner rings 2, double-row tapered rollers 3 and two rows of cages 4; each row of tapered rollers 3 is contained in the respective cage 4 pocket, and the double-row cage 4 containing full tapered rollers 3 is placed between the double raceway outer ring 1 and the two single raceway inner rings 2, and each tapered roller 3 is in rolling contact with the raceway of the double raceway outer ring 1 and the single raceway inner ring 2; the end face between the two single raceway inner rings 2 adopts a direct contact form; each row of cages comprises a large end ring 4.1, a small end ring 4.2 and a plurality of cage beams 4.3 evenly distributed between the large end ring 4.1 and the small end ring 4.2, and each adjacent two cage beams 4.3 and the large end ring 4.1 and the small end ring 4.2 form a cage pocket; a plurality of circular arc grooves 5 are arranged on the inner diameter of the large end ring 4.1 and the inner diameter of the small end ring 4.2;

[0023] The double raceway outer ring 1 has an oil hole at the center of the outer diameter for bearing lubrication and oil injection;

[0024] In the above-mentioned scheme, the circular arc grooves 5 arranged on the inner diameter of the cage enhance the formation ability of the oil film, reduce friction and noise;

[0025] The positions of the circular arc grooves 5 on the inner diameter of the large end ring 4.1 and the positions of the circular arc grooves 5 on the inner diameter of the small end ring 4.2 are staggered in space; which is beneficial to the uniformity of the oil;

[0026] The number of circular arc grooves on the inner diameter of the large end ring and the number of circular arc grooves on the inner diameter of the small end ring are the same, and in the embodiment, six are arranged.

[0027] The inner diameter of the large end ring 4.1 of the retainer corresponds to the position of the large flange 2.1 of the inner ring, and the inner diameter of the small end ring 4.2 of the retainer corresponds to the position of the small flange 2.2 of the inner ring; the inner diameter of the large end ring 4.1 and the inner diameter of the small end ring 4.2 are respectively arranged with a small gap between the large flange 2.1 of the inner ring and the small flange 2.2 of the inner ring, thereby forming a guide to enable the roller 3 to run in a correct posture;

[0028] The small gap is arranged in a range of 0.3-0.8 mm.

[0029] In the bearing structure of the scheme, a plurality of long grooves are formed on the outer diameters of the retainer beams 4.3, and the long grooves are lock roller grooves 6, so that the machining is simple and the assembly is easy;

[0030] The two side inner walls of the lock roller groove 6 form a 2 mm thickness area 6.1 with the two side edges of the retainer beam; a assembly tool with a width greater than the width of the long groove is arranged in the long groove; during assembly, the assembly tool is inserted into the long groove; since the retainer is made of brass, the hardness is relatively low, and the 2 mm thickness area 6.1 is relatively thin, so that the assembly tool supports the retainer beam 4.3 in the long groove to be deformed, the 2 mm thickness area 6.1 is inclined to the center of the pocket, thereby reducing the opening size of the retainer pocket; after deformation, the opening size of the pocket is smaller than the diameter size of the roller, thereby realizing the locking of the roller.

[0031] It should be noted that the assembly tool described above is an existing assembly tool in the field, which is only used during bearing assembly and removed after the lock roller is completed.

[0032] In the description of the utility model, it should be understood that the directions or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as limiting the utility model.

[0033] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0034] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned terms in the utility model according to specific circumstances.

[0035] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can be that first and second features directly contact, or first and second features indirectly contact through intermediate medium. Moreover, first feature "over", "above" and "on" second feature can be that first feature is directly above or obliquely above second feature, or just indicates that the horizontal height of first feature is higher than that of second feature. First feature "under", "below" and "under" second feature can be that first feature is directly below or obliquely below second feature, or just indicates that the horizontal height of first feature is less than that of second feature.

Claims

1. A copper retainer cup type tapered roller bearing without inner spacer ring, characterized in that, The bearing comprises a double-race outer ring, two single-race inner rings, double-row tapered rollers and two rows of retainers; each row of tapered rollers is accommodated in a respective retainer pocket, the double-row retainers accommodating the tapered rollers are placed between the double-race outer ring and the two single-race inner rings, each tapered roller is in rolling contact with the raceways of the double-race outer ring and the single-race inner rings, the end faces between the two single-race inner rings are in direct contact, each row of retainers comprises an integrally formed large end ring, a small end ring and a plurality of retainer beams uniformly distributed between the large end ring and the small end ring, each adjacent two retainer beams, the large end ring and the small end ring form a retainer pocket, and a plurality of arc grooves are arranged on the inner diameters of the large end ring and the small end ring. An oil hole is formed at the center position of the outer diameter of the double-race outer ring.

2. A copper retainer conical roller bearing without inner spacer ring according to claim 1, characterized in that: The positions of the arc grooves on the inner diameter of the large end ring and the positions of the arc grooves on the inner diameter of the small end ring are staggered in space.

3. A copper retainer conical roller bearing without inner spacer ring according to claim 1, characterized in that: The number of arc grooves on the inner diameter of the large end ring is the same as the number of arc grooves on the inner diameter of the small end ring, and both are 4-6.

4. A copper retainer conical roller bearing without inner spacer ring according to claim 3, characterized in that: The inner diameter of the large end ring corresponds to the position of the large stop edge of the inner ring, and the inner diameter of the small end ring corresponds to the position of the small stop edge of the inner ring; the inner diameters of the large end ring and the small end ring are respectively arranged with a small gap between the large stop edge of the inner ring and the small stop edge of the inner ring.

5. A copper retainer conical roller bearing without inner spacer ring according to claim 1, characterized in that: The small gap is arranged in a range of 0.3-0.8mm.

6. A copper retainer conical roller bearing without inner spacer ring according to claim 5, characterized in that: The bearing is also provided with a lock roller structure, a long groove is formed on the outer diameter of each of the plurality of retainer beams, and the long groove is a lock roller groove.

7. A copper retainer conical roller bearing without inner spacer ring according to any one of claims 1 to 6, characterized in that: The inner walls on both sides of the lock roller groove form a thickness area of 2mm with the edges of the retainer beam.

8. A copper retainer conical roller bearing without inner spacer ring according to claim 7, characterized in that: ​

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