CN207454540U - A kind of taper roller is the double-row bearing of hollow-core construction - Google Patents

Abstract

A double-row bearing with tapered rollers in a hollow structure, which relates to a double-row tapered roller bearing, in which a cylindrical cavity (11) is provided between the two bottom surfaces of the tapered rollers (5). (11) A supporting body (14) is sleeved inside, and a plurality of tapered rollers (5) arranged at intervals are arranged by a cage (6) on the outer wall of the inner ring ( 8) The expanded neck side is limited between the annular protrusion A (7) and the annular protrusion B (10) on the outer wall (8) of the inner ring; The supporting body is set in the body, which effectively reduces the weight of the tapered rollers and enhances the bearing capacity after the tapered rollers are set as hollow. The annular grooves set at both ends of the inner wall of the outer ring are respectively embedded in the oil-absorbing rings to effectively solve the problem. The drawback of the tapered roller throwing oil to the inside of the machine during operation of the utility model is eliminated, and the purpose of high-speed stability and long life of the utility model when used on a robot or a host machine is realized.

Description

A Double Row Bearing with Hollow Tapered Roller

【Technical field】

The utility model relates to a double-row tapered roller bearing, in particular to a double-row bearing in which the tapered roller is a hollow structure.

【Background technique】

Bearing is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy; machine tool and other host bearings are mainly used for the main shaft of machine tools, machine tools The main shaft bearing is the core of the good operation of the machine tool. Different bearing selections determine the different load capacity, operating speed, stiffness, temperature rise and service life of the machine tool spindle, especially the impact on the stiffness and temperature rise is more significant. Therefore, the main shaft bearing should be rationally configured according to the requirements of the working characteristics of the machine tool; Tapered roller bearings can withstand greater radial loads. During the use of tapered roller bearings, the tapered rollers roll between the inner and outer rings of the bearing, and the two ends of the tapered rollers are limited by the cage. The sub-body is large, and because the tapered roller is generally made of metal, the self-weight of the tapered roller is also relatively large. The tapered roller bearing is affected by the excessive size and weight of the tapered roller during operation, so it cannot achieve high Smooth running at high speed.

【Content of invention】

In order to overcome the deficiencies in the background technology, the utility model discloses a double-row bearing with a hollow tapered roller structure. By setting a cavity in the tapered roller and a support body in the cavity, the tapered roller is effectively reduced. The weight of the tapered roller has been enhanced, and the bearing capacity after the tapered roller is set as hollow, and the annular grooves arranged at both ends of the inner wall of the outer ring are respectively embedded in the oil-absorbing ring, which effectively solves the problem that the tapered roller is in the machine when the utility model is running. The disadvantage of oil rejection has achieved the purpose of high-speed stability and long life when the utility model is used on a robot or a main engine.

In order to realize the purpose of the invention, the utility model adopts the following technical solutions:

A double-row bearing with tapered rollers in a hollow structure, including an outer ring, tapered rollers, a cage and an inner ring. There are annular grooves, and oil-absorbing rings are respectively embedded in the two annular grooves. The outer wall of the inner ring of the inner ring is necked on one side and the other side is narrowed. There is an annular protrusion A on the expanded neck side of the outer wall of the inner ring. There is an annular protrusion B on the necking side of the outer wall of the inner ring, and the tapered roller expands the neck on one side and shrinks the other side. There is a through cylindrical cavity between the two bottom surfaces of the tapered roller. The side wall of the body is provided with eight channels at equal intervals, and a support body is sleeved in the cavity. The support body includes a cylinder and a Pozi-shaped support. In the same chamber, protruding strips are respectively provided on the outer wall of the cylinder corresponding to the eight ends of the M-shaped support. The outer wall of the cylinder is in contact with the side wall of the cavity, and the eight protruding strips are respectively placed In the groove, there are two inner rings, and a plurality of spaced apart tapered rollers are arranged by the cage so that the expanding neck side of the multiple tapered rollers is located on the expanding neck side of the outer wall of the inner ring to limit the annular protrusion on the outer wall of the inner ring Between A and the annular protrusion B, another plurality of spaced apart tapered rollers are defined by another cage so that the expanded neck side of the other multiple tapered rollers is located at the expanded neck side of the outer wall of the other inner ring. Between the annular projection A and the annular projection B on the outer wall of the inner ring, the two ends of the inner wall of the outer ring of the outer ring are respectively sleeved on the outside of the two inner rings provided with tapered rollers.

The tapered roller is a double-row bearing with a hollow structure, and the outer wall of the outer ring of the outer ring is an annular planar structure.

The tapered roller is a double-row bearing with a hollow structure, and a chamfer transition is provided between the outer wall of the outer ring of the outer ring and the two end faces of the outer ring.

The tapered roller is a double-row bearing with a hollow structure, and the inner wall of the inner ring of the inner ring is an annular planar structure.

The tapered roller is a double-row bearing with a hollow structure, and a chamfer transition is provided between the inner wall of the inner ring of the inner ring and the two end surfaces of the inner ring.

The tapered roller is a double-row bearing with a hollow structure, and the protruding strip and the through groove are interference fit.

Due to the above-mentioned technical scheme, the utility model has the following beneficial effects:

The tapered roller described in the utility model is a double-row bearing with a hollow structure. By setting a cavity in the tapered roller and a support body in the cavity, the weight of the tapered roller is effectively reduced, and the bearing capacity of the tapered roller is enhanced. The bearing capacity after the ring is set as hollow, and the annular grooves set at both ends of the inner wall of the outer ring are respectively embedded in the oil-absorbing ring, which effectively solves the disadvantage of the tapered roller throwing oil to the inside of the machine when the utility model is running, and realizes the present invention. The purpose of the utility model is high-speed stability and long life when used on a robot or a host machine; the utility model is novel and unique in design, strong in practicability, energy-saving and consumption-reducing, and has great market promotion value.

【Description of drawings】

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the structure of the outer ring of the utility model;

Fig. 3 is a schematic diagram of the structure of the inner ring of the utility model;

Fig. 4 is a schematic diagram of the cooperation structure of the tapered roller and the support body of the present invention;

Fig. 5 is the structure diagram of tapered roller of the present utility model;

Fig. 6 is a schematic diagram of the structure of the support body of the present invention.

In the figure: 1. Outer ring; 2. Annular groove; 3. Oil suction ring; 4. Inner wall of outer ring; 5. Tapered roller; 6. Cage; 7. Annular protrusion A; 8. Outer wall of inner ring; 9 10. Annular protrusion B; 11. Cavity; 12. Through groove; 13. Cylinder; 14. Support body; 15. Pozi-shaped support; 16. Chamber;

【Detailed ways】

The utility model can be explained in more detail by the following examples, the utility model is not limited to the following examples, the purpose of disclosing the utility model is intended to protect all changes and improvements within the scope of the utility model;

The tapered roller described in conjunction with accompanying drawings 1 to 6 is a double-row bearing with a hollow structure, including an outer ring 1, a tapered roller 5, a cage 6 and an inner ring 9, and the inner wall 4 of the outer ring of the outer ring 1 is expanded at both ends. The neck is narrowed in the middle, and annular grooves 2 are respectively provided at both ends of the inner wall 4 of the outer ring, and oil-absorbing rings 3 are respectively embedded in the two annular grooves 2. The outer wall of the outer ring of the outer ring 1 is a ring-shaped planar structure, and the A chamfer transition is set between the outer wall of the outer ring and the two ends of the outer ring 1. The outer wall 8 of the inner ring 9 of the inner ring 9 is necked on one side and the other side is narrowed. The annular protrusion A7 is provided with an annular protrusion B10 on the necking side of the outer wall 8 of the inner ring. A chamfer transition is provided between them, and the tapered roller 5 is necked on one side and the other side is narrowed. A through cylindrical cavity 11 is provided between the two bottom surfaces of the tapered roller 5. On the side wall of the cavity 11 Eight channels 12 are provided at equal intervals, and a support body 14 is sleeved in the cavity 11. The support body 14 includes a cylinder 13 and a Pozier-shaped support 15. The Pozi-shaped support 15 is sleeved in the cylinder 13 and the cylinder The interior of 13 is divided into eight identical chambers 16, and protruding strips 17 are respectively provided on the outer wall of the cylinder 13 corresponding to the eight ends of the Pozi-shaped support 15, the outer wall of the cylinder 13 and the side of the cavity 11 The walls are in contact, and the eight protruding strips 17 are respectively placed in the eight channel grooves 12. The protruding strips 17 and the through grooves 12 are interference fit, and there are two inner rings 9. A plurality of spaced tapered rollers 5 According to the expansion neck side of the plurality of tapered rollers 5 located on the expansion neck side of the outer wall 8 of the inner ring and defined between the annular protrusion A7 and the annular protrusion B10 of the outer wall 8 of the inner ring, another cage 6 will additionally The tapered rollers 5 arranged at intervals define the annular protrusion A7 and the annular protrusion on the outer wall 8 of the other inner ring according to the expansion neck side of the other plurality of tapered rollers 5 located at the neck expansion side of the outer wall 8 of the other inner ring. Between B10, the two ends of the inner wall 4 of the outer ring of the outer ring 1 are sleeved on the outside of the two inner rings 9 provided with tapered rollers 5 respectively.

The tapered roller described in the utility model is a double-row bearing with a hollow structure. When in use, apply a small amount of bearing oil on the inner ring outer walls 8 of the two inner rings 9, and place the two cages 6 on the two inner rings 9. Then put the matching tapered rollers 5 into the multiple tapered roller grooves respectively provided on the two cages 6, and put the two ends of the inner wall 4 of the outer ring 1 on the two sets of The outside of the inner ring 9 of the tapered roller 5; when the utility model is running at high speed, it needs to bear the pressure from the axial and radial directions. In order to ensure that the tapered roller 5 is not deformed under pressure during operation, a support body 14 is provided in the cavity 11, which not only effectively reduces the weight of the tapered roller 5, but also enhances the bearing capacity of the tapered roller 5 after it is set to be hollow. Force; the bearing oil applied on the outer walls 8 of the two inner rings will adhere to the inner wall 4 of the outer ring along with the rotation of the tapered roller 5 and flow along the inner wall 4 of the outer ring to the two expanded neck ends of the inner wall 4 of the outer ring, and Finally, the bearing oil is thrown to the inside of the machine, and the annular grooves 2 respectively set at the two expanded neck ends of the inner wall 4 of the outer ring are respectively embedded in the oil-absorbing ring 3, which can effectively transfer the oil along the inner wall 4 of the outer ring to the inner wall 4 of the outer ring. The adsorption of the bearing oil flowing at the expanding neck avoids the drawback of the utility model throwing the bearing oil inside the machine during operation.

The unspecified part of the utility model is prior art.

Claims (6)

1. a kind of taper roller is the double-row bearing of hollow-core construction, including outer ring（1）, taper roller（5）, retainer（6）With it is interior Circle（9）, it is characterized in that：Outer ring（1）Outer ring inner wall（4）Expand necking down among neck for both ends, in outer ring inner wall（4）Both ends difference Equipped with annular groove（2）, in two annular grooves（2）Oil suction ring is inside embedded with respectively（3）, inner ring（9）Interior ring outer wall（8）For one side Expand neck opposite side necking down, in interior ring outer wall（8）Expansion neck one side be equipped with annular protrusion A（7）, in interior ring outer wall（8）Necking down one Side is equipped with annular protrusion B（10）, taper roller（5）Expand neck opposite side necking down for one side, in taper roller（5）Two bottom surfaces between Cylindrical cavity equipped with perforation（11）, in cavity（11）Sidewall spacers equidistantly be equipped with eight straight slots（12）, in cavity（11） Inside it is socketed with supporter（14）, supporter（14）Including cylinder（13）It is supported with M shape（15）, M shape support（15）Socket In cylinder（13）It is interior and by cylinder（13）Inside be divided into eight identical chambers（16）, in cylinder（13）Outer wall on rice Font supports（15）Eight corresponding positions of endpoint are respectively equipped with prominent item（17）, cylinder（13）Outer wall and cavity（11）'s Side wall is in contact, eight prominent items（17）It is respectively placed in eight straight slots（12）It is interior, inner ring（9）For two, by retainer（6）To be more A spaced taper roller（5）According to multiple taper rollers（5）Expansion neck one side be located at interior ring outer wall（8）Expansion neck one side It is limited to interior ring outer wall（8）Annular protrusion A（7）With annular protrusion B（10）Between, by another retainer（6）To be in addition more A spaced taper roller（5）According to other multiple taper rollers（5）Expansion neck one side be located at another interior ring outer wall（8）'s Expand neck one side and be limited to another interior ring outer wall（8）Annular protrusion A（7）With annular protrusion B（10）Between, outer ring（1）In outer ring Wall（4）Both ends be respectively fitted over two be equipped with taper roller（5）Inner ring（9）It is external.

2. taper roller according to claim 1 is the double-row bearing of hollow-core construction, it is characterized in that：Outer ring（1）Outer ring Outer wall is ring plain structure.

3. taper roller according to claim 2 is the double-row bearing of hollow-core construction, it is characterized in that：In outer ring（1）It is outer Ring outer wall and outer ring（1）Both ends of the surface between be arranged to chamfered transition.

4. taper roller according to claim 1 is the double-row bearing of hollow-core construction, it is characterized in that：Inner ring（9）Inner ring Inner wall is ring plain structure.

5. taper roller according to claim 4 is the double-row bearing of hollow-core construction, it is characterized in that：In inner ring（9）It is interior Enclose inner wall and inner ring（9）Both ends of the surface between be arranged to chamfered transition.

6. taper roller according to claim 1 is the double-row bearing of hollow-core construction, it is characterized in that：Prominent item（17）With it is logical Slot（12）For interference fit.