CN207485855U - A kind of individual layer taper roller is the double-deck bearing of composite structure - Google Patents

Abstract

A double-layer bearing with a combined structure of single-layer tapered rollers relates to a double-layer tapered roller bearing, in which a plurality of tapered rollers A (5) arranged at intervals are arranged by a cage A (6) according to a plurality of tapered rollers. The expanded neck side of the child A (5) is located on the outer wall of the middle ring (8), and the expanded neck side is limited between the annular protrusion A (7) and the annular protrusion B (9) of the outer wall (8) of the middle ring; The utility model sets the tapered roller A as a three-stage structure in which the three rolling elements are connected by a ball joint, so that when one rolling element in a tapered roller A wears, the other two rolling elements can still Continue to work, the annular groove A and the annular groove B respectively set on the inner wall of the outer ring and the inner wall of the middle ring are embedded in the oil-absorbing ring A and the oil-absorbing ring B, effectively solving the problem of the tapered roller A and the tapered roller during the operation of the utility model. The disadvantage of B throwing oil inside the machine has achieved the purpose of the utility model being stable and long-lived when used on a robot or a main engine.

Description

A double-layer bearing with a combined structure of single-layer tapered rollers

【Technical field】

The utility model relates to a double-layer tapered roller bearing, in particular to a double-layer bearing with a combined structure of single-layer tapered rollers.

【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; Layered tapered roller bearings can provide higher speed and smoothness in the bearing rotation. 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. Bit, because a single tapered roller is relatively large, so after one of the tapered rollers in the tapered roller bearing wears and deforms, the rolling track of this tapered roller will become abnormal when rolling, and it is easy to displace the outer surface of the tapered roller. The inner wall of the ring and the outer wall of the inner ring wear at the same time, which in turn causes the wear of other tapered rollers, and finally makes the entire tapered roller bearing unusable.

【Content of invention】

In order to overcome the shortcomings in the background technology, the utility model discloses a double-layer bearing with a combined structure of single-layer tapered rollers. The tapered roller A is set as a three-stage structure in which three rolling elements are connected by ball joints. , to realize that when one rolling element in a tapered roller A wears, the other two rolling elements can continue to work, and at the same time reduce the wear of the worn rolling element on the inner wall of the outer ring and the outer wall of the middle ring of the tapered roller bearing , the annular groove A and the annular groove B respectively provided on the inner wall of the outer ring and the inner wall of the middle ring are embedded in the oil-absorbing ring A and the oil-absorbing ring B, which effectively solves the problem of the orientation of the tapered roller A and the tapered roller B during the operation of the utility model. The disadvantage of oil throwing inside the machine achieves the purpose of the utility model being stable and long-lived when used on a robot or a host machine.

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

A double-layer bearing with a single-layer tapered roller combined structure, including an outer ring, a tapered roller A, a cage A, an inner ring, a cage B, a tapered roller B, and a middle ring. The inner wall of the outer ring of the outer ring is One side expands the neck and the other side shrinks the neck. An annular groove A is provided on the expanded neck side of the inner wall of the outer ring, and an oil-absorbing ring A is embedded in the annular groove A. The outer wall of the middle ring of the middle ring is one side expanded neck and the other Side constriction, an annular protrusion A is provided on the neck expansion side of the outer wall of the middle ring, and an annular protrusion B is provided on the necking side of the outer wall of the middle ring, and the inner wall of the middle ring of the middle ring is one side of the neck expansion and the other side Neck constriction, there is an annular groove B on the expanding side of the inner wall of the middle ring, and an oil-absorbing ring B is embedded in the annular groove B. The outer wall of the inner ring of the inner ring is one side expanding and the other side constricting, There is an annular protrusion D on the expanding neck side of the outer wall of the ring, and an annular protrusion C on the necking side of the outer wall of the inner ring. The tapered roller A includes rolling body A, rolling body B and rolling body C. Rolling body A To widen the neck on one side and shrink the neck on the other side, there is a cone A at the end of one side of the rolling body A, and a ball head A is provided at the end of the cone A, and the rolling body B is to expand the neck on one side and the other. One side of the neck is constricted, and a ball socket A is provided at the center of the end of the rolling body B on the necking side, and a ball socket B is provided at the center of the end of the rolling body B on the side of the expanding neck, and the rolling body C is one side expanding. The other side of the neck is constricted, and a cone B is provided at the end of the constricted side of the rolling body C, and a ball head B is provided at the end of the cone B, and the ball head A is placed in the ball socket A and connected with the ball socket A ball hinge connection, ball head B is placed in the ball socket B and connected with the ball socket B ball hinge, the tapered roller B is a cone with one side expanding and the other side constricting, and the cage A arranges multiple intervals The tapered roller A is defined between the annular protrusion A and the annular protrusion B on the outer wall of the middle ring according to the expansion neck side of the multiple tapered rollers A located on the expansion neck side of the outer wall of the middle ring. The tapered rollers B arranged at intervals are defined between the annular protrusion D and the annular protrusion C on the outer wall of the inner ring according to the expansion neck side of the plurality of tapered rollers B located on the expansion neck side of the outer wall of the inner ring. The inner wall of the outer ring is sleeved on the outside of a plurality of tapered rollers A arranged at intervals, and the inner wall of the middle ring of the middle ring is sleeved on the outside of a plurality of tapered rollers B arranged at intervals.

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

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

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

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

The single-layer tapered roller described in the utility model is a double-layer bearing with a combined structure. By setting the tapered roller A as a three-stage structure connected by ball joints between the three rolling elements, it is realized that it can be used as a tapered roller. After one of the rolling elements in A wears out, the other two rolling elements can continue to work. At the same time, the wear of the worn rolling elements on the inner wall of the outer ring and the outer wall of the middle ring of the tapered roller bearing is reduced. The annular groove A and the annular groove B respectively provided are embedded in the oil-absorbing ring A and the oil-absorbing ring B, which effectively solves the disadvantages of the tapered roller A and the tapered roller B throwing oil to the inside of the machine during operation of the utility model, and realizes The utility model achieves the purpose of stability and long life when used on a robot or a host; 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 middle circle of the utility model;

Fig. 4 is a schematic diagram of the structure of the inner ring of the utility model;

Fig. 5 is a schematic diagram of the assembly structure of the tapered roller A of the present invention;

Fig. 6 is a half-sectional view of the tapered roller A of the present invention.

In the figure: 1. Outer ring; 2. Annular groove A; 3. Oil suction ring A; 4. Inner wall of outer ring; 5. Tapered roller A; 6. Cage A; 7. Annular protrusion A; 8. Center Ring outer wall; 9. Annular protrusion B; 10. Annular protrusion C; 11. Outer wall of inner ring; 12. Inner ring; 13. Annular protrusion D; 14. Cage B; 15. Tapered roller B; 16. Inner wall of middle ring; 17, oil-absorbing ring B; 18, annular groove B; 19, middle ring; 20, rolling body A; 21, cone A; 22, ball head A; 23, ball socket A; 24, rolling body B; 25. Ball head B; 26. Cone B; 27. Rolling body C; 28. Ball socket B.

【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 single-layer tapered roller described in conjunction with accompanying drawings 1 to 6 is a double-layer bearing with a combined structure, including an outer ring 1, a tapered roller A5, a cage A6, an inner ring 12, a cage B14, a tapered roller B15 and a center Ring 19, the inner wall 4 of the outer ring of the outer ring 1 is necked on one side and the other side is narrowed. An annular groove A2 is provided on the expanded neck side of the inner wall 4 of the outer ring, and an oil-absorbing ring A3 is embedded in the annular groove A2. , the outer wall of the outer ring of the outer ring 1 is a ring-shaped planar structure, and a chamfer transition is set between the outer wall of the outer ring of the outer ring 1 and the two end faces of the outer ring 1, and the outer wall of the middle ring 19 of the middle ring 19 is one side expanding the neck and the other Necking on one side, an annular protrusion A7 is provided on the neck expansion side of the outer wall 8 of the middle ring, and an annular protrusion B9 is provided on the necking side of the outer wall 8 of the middle ring, and the inner wall 16 of the middle ring 19 is one side The other side of the neck is narrowed. On the side of the inner wall 16 of the middle ring, there is an annular groove B18, and an oil-absorbing ring B17 is embedded in the annular groove B18. The inner ring outer wall 11 of the inner ring 12 is one side of the neck. Necking on the other side, an annular protrusion D13 is provided on the neck expansion side of the outer wall 11 of the inner ring, and an annular protrusion C10 is provided on the necking side of the outer wall 11 of the inner ring, and the inner ring inner wall of the inner ring 12 is annular Planar structure, the inner wall of the inner ring 12 and the two end surfaces of the inner ring 12 are provided with a chamfered transition, the tapered roller A5 includes rolling elements A20, rolling elements B24 and rolling elements C27, and the rolling elements A20 are one side expanded The other side of the neck is narrowed, and a cone A21 is provided at the end of the expanding side of the rolling body A20, and a ball head A22 is provided at the end of the cone A21, and the rolling body B24 is one side expanding and the other side shrinking , A ball socket A23 is provided at the center of the end of the rolling element B24 on the narrowing side, a ball socket B28 is provided at the center of the end of the rolling element B24 on the expanding neck side, and the rolling element C27 is one side expanding the neck and the other side Constriction, a cone B26 is provided at the end of the constriction side of the rolling element C27, and a ball head B25 is provided at the end of the cone B26. The ball head A22 is placed in the ball socket A23 and is connected with the ball socket A23. , the ball head B25 is placed in the ball socket B28 and is connected with the ball joint of the ball socket B28. The tapered roller B15 is a cone with one side expanding and the other side constricting. A5 is defined between the annular protrusion A7 and the annular protrusion B9 of the outer wall 8 of the middle ring according to the expansion neck side of the multiple tapered rollers A5 located on the expansion neck side of the outer wall 8 of the middle ring. The arranged tapered rollers B15 are defined between the annular protrusion D13 and the annular protrusion C10 of the inner ring outer wall 11 according to the expansion neck side of the plurality of tapered rollers B15 located on the expansion neck side of the inner ring outer wall 11, the outer ring 1 The inner wall 4 of the outer ring of the outer ring is sleeved on the outside of a plurality of tapered rollers A5 arranged at intervals, and the inner wall 16 of the middle ring of the middle ring 19 is sleeved on the outside of a plurality of tapered rollers B15 arranged at intervals.

The single-layer tapered roller described in this utility model is a double-layer bearing with combined structure. When in use, apply a small amount of bearing oil on the inner ring outer wall 11 of the inner ring 12, place the cage B14 on the inner ring 12, Then put the matching tapered rollers B15 into the multiple tapered roller grooves provided on the cage B14, put the middle ring 19 on it, and apply a small amount of bearing oil on the outer wall 8 of the middle ring 19 , put the cage A6 on the middle ring 19, then put the matching tapered rollers A5 into the multiple tapered roller grooves provided on the cage A6, and put the outer ring 1 on it; the utility model When running at high speed, it needs to withstand axial and radial pressure. When one rolling element in a tapered roller A5 wears out, the other two rolling elements in the tapered roller A5 can still operate normally. The rolling elements in contact with the inner wall 4 of the outer ring and the outer wall 8 of the middle ring have less damage, which ensures the smooth operation of the utility model; when the utility model is in operation, the bearing oil applied on the outer wall 11 of the inner ring will follow The rotation of the tapered roller B15 adheres to the inner wall 16 of the middle ring and flows along the inner wall 16 of the middle ring to the neck expansion end of the inner wall 16 of the middle ring, and finally throws the bearing oil to the inside of the machine. The annular groove B18 provided at the end of the middle ring can effectively absorb the bearing oil flowing along the inner wall 16 of the middle ring to the expanded neck end of the inner wall 16 of the middle ring after the oil-absorbing ring B17 is embedded, and the bearing oil applied on the outer wall 8 of the middle ring will With the rotation of the tapered roller A5, it adheres to the inner wall 4 of the outer ring and flows along the inner wall 4 of the outer ring to the neck expansion end of the inner wall 4 of the outer ring, and finally throws the bearing oil to the inside of the machine. After the annular groove A2 provided at the end is embedded in the oil-absorbing ring A3, it can effectively absorb the bearing oil flowing along the inner wall 4 of the outer ring to the neck expansion end of the inner wall 4 of the outer ring, so as to prevent the utility model from leaking to the inside of the machine during operation. Disadvantages of dumping bearing oil.

The unspecified part of the utility model is prior art.

Claims (5)

1. a kind of individual layer taper roller is the double-deck bearing of composite structure, including outer ring（1）, taper roller A（5）, retainer A （6）, inner ring（12）, retainer B（14）, taper roller B（15）And centre circle（19）, it is characterized in that：Outer ring（1）Outer ring inner wall （4）Expand neck opposite side necking down for side, in outer ring inner wall（4）Expansion neck side be equipped with annular groove A（2）, in annular groove A （2）It is embedded with oil suction ring A（3）, centre circle（19）Middle ring outer wall（8）Expand neck opposite side necking down for side, in middle ring outer wall（8）'s Expand neck side and be equipped with annular protrusion A（7）, in middle ring outer wall（8）Necking down side be equipped with annular protrusion B（9）, centre circle（19）In Enclose inner wall（16）Expand neck opposite side necking down for side, in centre circle inner wall（16）Expansion neck side be equipped with annular groove B（18）, in ring Connected in star B（18）It is embedded with oil suction ring B（17）, inner ring（12）Interior ring outer wall（11）Expand neck opposite side necking down for side, inside Ring outer wall（11）Expansion neck side be equipped with annular protrusion D（13）, in interior ring outer wall（11）Necking down side be equipped with annular protrusion C （10）, taper roller A（5）Including rolling element A（20）, rolling element B（24）With rolling element C（27）, rolling element A（20）Expand for side Neck opposite side necking down, in rolling element A（20）One side end of expansion neck be equipped with cone A（21）, in cone A（21）End be equipped with ball Head A（22）, rolling element B（24）Expand neck opposite side necking down for side, in rolling element B（24）The centre of one side end of necking down is set There is ball-and-socket A（23）, in rolling element B（24）The centre for expanding one side end of neck is equipped with ball-and-socket B（28）, rolling element C（27）It is one Neck opposite side necking down is expanded in side, in rolling element C（27）One side end of necking down be equipped with cone B（26）, in cone B（26）End set There is bulb B（25）, bulb A（22）It is placed in ball-and-socket A（23）It is interior and with ball-and-socket A（23）Flexural pivot connects, bulb B（25）It is placed in ball-and-socket B （28）It is interior and with ball-and-socket B（28）Flexural pivot connects, taper roller B（15）Expand the frustum of neck opposite side necking down for side, by retainer A （6）By multiple spaced taper roller A（5）According to multiple taper roller A（5）Expansion neck side be located at middle ring outer wall（8） Expansion neck side be limited to middle ring outer wall（8）Annular protrusion A（7）With annular protrusion B（9）Between, by retainer B（14）To be more A spaced taper roller B（15）According to multiple taper roller B（15）Expansion neck side be located at interior ring outer wall（11）Expansion Neck side is limited to interior ring outer wall（11）Annular protrusion D（13）With annular protrusion C（10）Between, outer ring（1）Outer ring inner wall （4）It is sleeved on multiple spaced taper roller A（5）Outside, centre circle（19）Centre circle inner wall（16）It is sleeved on multiple interval rows The taper roller B of row（15）Outside.

2. individual layer taper roller according to claim 1 is the double-deck bearing of composite structure, it is characterized in that：Outer ring（1）'s Outer ring outer wall is ring plain structure.

3. individual layer taper roller according to claim 2 is the double-deck bearing of composite structure, it is characterized in that：In outer ring（1） Outer ring outer wall and outer ring（1）Both ends of the surface between be set as chamfered transition.

4. individual layer taper roller according to claim 1 is the double-deck bearing of composite structure, it is characterized in that：Inner ring（12）'s Inner ring inner wall is ring plain structure.

5. individual layer taper roller according to claim 4 is the double-deck bearing of composite structure, it is characterized in that：In inner ring（12） Inner ring inner wall and inner ring（12）Both ends of the surface between be set as chamfered transition.