CN207454544U - A kind of single-row tapered roller is the double-row bearing of combining structure - Google Patents

Abstract

A double-row bearing with a combined structure of single-row tapered rollers relates to a double-row tapered roller bearing. The tapered roller A (5) includes rolling elements A (12), rolling elements B (16) and rolling elements C ( 19), a plurality of spaced tapered rollers A (5) are limited by the cage (6) between the annular protrusion A (7) and the annular protrusion B (10) on the outer wall (8) of the inner ring; this 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 Continuing to work, the annular groove set on the inner wall of the outer ring is embedded in the oil-absorbing ring, which effectively solves the disadvantages of the tapered roller throwing oil to the inside of the machine when the tapered roller bearing is running, and realizes the utility model when used on a robot or a host machine. The purpose of stability and long life.

Description

A double-row bearing with a single-row tapered roller combined structure

【Technical field】

The utility model relates to a double-row tapered roller bearing, in particular to a double-row bearing with a combined structure of single-row 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; Tapered roller bearings can withstand greater radial loads. During 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 individual rollers are 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 separate the inner wall of the outer ring and the inner ring in contact with it. The outer wall is worn 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 deficiencies in the background technology, the utility model discloses a double-row bearing with single-row tapered rollers as a combined structure. By setting the tapered rollers A as a three-stage structure in which three rolling elements are connected by ball joints, It is realized 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 on the inner wall of the outer ring and the outer wall of the inner ring of the utility model. After the groove is embedded in the oil-absorbing ring, it effectively solves the disadvantage of the tapered roller throwing oil to the inside of the machine when the tapered roller bearing is running, and realizes the purpose of the utility model to be 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-row bearing with a single-row tapered roller combined structure, including an outer ring, a tapered roller A, a cage, an inner ring, and a tapered roller B. There are annular grooves on both sides of the inner wall of the inner ring, and oil-absorbing rings are respectively embedded in the two annular grooves. An annular protrusion A is provided, and an annular protrusion B is provided on the necking side of the outer wall of the inner ring. The tapered roller A expands the neck on one side and shrinks the neck on the other. The tapered roller A includes rolling elements A and B. And the rolling body C, the rolling body A is one side expanding the neck and the other side constricting the neck, there is a cone A at the end of the expanding neck of the rolling body A, and a ball head A is provided at the end of the cone A, rolling The body B is necked on one side and narrowed on the other. A ball and socket A is provided at the center of the end of the rolling body B on the necked side, and a ball and socket B is provided at the center of the end of the rolling body B on the expanding side. , the rolling element C is one side widened and the other side constricted, a cone B is provided at the end of the rolling element C on the constricted side, and a ball head B is provided at the end of the cone B, and the ball head A is placed The ball socket A is connected with the ball joint of the ball socket A, and the ball head B is placed in the ball socket B and connected with the ball socket B ball joint. There are two rings, and a plurality of tapered rollers A arranged at intervals are defined by the cage according to the expansion neck side of the multiple tapered rollers A located on the expansion neck side of the outer wall of the inner ring to define the annular protrusion A on the outer wall of the inner ring and Between the annular protrusions B, a plurality of spaced apart tapered rollers B are defined by another cage so that the expanded neck side of the multiple tapered rollers B is located at the expanded neck side of the outer wall of the other inner ring and is limited in the other inner ring. Between the annular protrusion A and the annular protrusion B on the outer wall of the ring, the two ends of the inner wall of the outer ring of the outer ring are respectively sleeved outside the inner ring with the tapered roller A and the other inner ring with the tapered roller B.

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

The single-row tapered roller is a double-row 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-row tapered rollers described above are double-row bearings with combined structure, and the inner wall of the inner ring of the inner ring is of annular planar structure.

The single-row tapered roller is a double-row bearing with combined 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.

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

The single-row tapered roller described in the utility model is a double-row 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 a tapered roller A After one of the rolling elements is worn, the other two rolling elements can continue to work, and at the same time reduce the wear on the inner wall of the outer ring and the outer wall of the inner ring of the utility model. The annular groove set on the inner wall of the outer ring is embedded in the oil suction ring. It perfectly solves the disadvantages of tapered rollers throwing oil to the inside of the machine when the tapered roller bearing is running, and realizes the purpose of the utility model to be stable and long-lived when used on the robot or the host machine; the utility model is novel and unique in design, strong in practicability, Energy saving and consumption reduction have great marketing 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 assembly structure of the tapered roller A of the present invention;

Fig. 5 is a half-sectional view of the tapered roller A 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 A; 6. Cage; 7. Annular protrusion A; 8. Outer wall of inner ring; 9. Inner ring; 10. Annular protrusion B; 11. Tapered roller B; 12. Rolling body A; 13. Cone A; 14. Ball head A; 15. Ball socket A; 16. Rolling body B; 17 , ball head B; 18, cone B; 19, rolling body C; 20, 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-row tapered rollers described in conjunction with accompanying drawings 1 to 5 are double-row bearings with a combined structure, including outer ring 1, tapered roller A5, cage 6, inner ring 9 and tapered roller B11, and the outer ring of outer ring 1 The inner wall 4 is necked at both ends and the middle is narrowed. There are annular grooves 2 on both sides 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 annular. Planar structure, chamfer transition is set between the outer wall of the outer ring 1 and the two end faces 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, and the outer wall 8 of the inner ring An annular protrusion A7 is provided on one side of the expanding neck, and an annular protrusion B10 is provided on the necking side of the outer wall 8 of the inner ring. The two ends of the inner ring 9 are provided with a chamfer transition, and the tapered roller A5 is necked on one side and the other side is narrowed. The tapered roller A5 includes rolling elements A12, rolling elements B16 and rolling elements C19, and rolling elements A12 is One side expands the neck and the other side shrinks. A cone A13 is provided at the end of one side of the rolling body A12, and a ball head A14 is provided at the end of the cone A13. The rolling body B16 is one side expanding the neck and the other. Side constriction, a ball socket A15 is provided at the center of the end of the rolling element B16 on the necking side, a ball socket B20 is provided at the center of the end of the rolling element B16 on the expanding side, and the rolling element C19 is one side expanding the neck The other side is constricted, a cone B18 is provided at the end of the constriction side of the rolling element C19, and a ball head B17 is provided at the end of the cone B18. The ball head A14 is placed in the ball socket A15 and connected with the ball socket A15. Ball hinge connection, ball head B17 is placed in ball socket B20 and connected with ball socket B20 ball hinge, tapered roller B11 is a cone with one side expanding and the other side shrinking, two inner rings 9 are formed by the cage 6 A plurality of tapered rollers A5 arranged at intervals are defined between the annular protrusion A7 and the annular protrusion B10 of the outer wall 8 of the inner ring so that the expanded neck side of the plurality of tapered rollers A5 is located at the expanded neck side of the outer wall 8 of the inner ring In between, a plurality of spaced apart tapered rollers B11 are defined by another cage 6 on the other inner ring outer wall 8 according to the expansion neck side of the multiple tapered rollers B11 located at the expansion neck side of the other inner ring outer wall 8 Between the annular protrusion A7 and the annular protrusion B10, the two ends of the inner wall 4 of the outer ring of the outer ring 1 are respectively sleeved outside the inner ring 9 provided with the tapered roller A5 and the inner ring 9 provided with the tapered roller B11.

The single-row tapered rollers described in this utility model are double-row bearings with a combined structure. When in use, apply a small amount of bearing oil on the outer walls 8 of the inner rings of the two inner rings 9, and place the two cages 6 on the inner rings of the two inner rings. 9, and then put the matching tapered rollers A5 into the multiple tapered roller grooves provided on one cage 6 respectively, and put them into the multiple tapered roller grooves provided on the other cage 6 Put in the matching tapered rollers B11 respectively, and put the two ends of the inner wall 4 of the outer ring of the outer ring 1 on the inner ring 9 with the tapered roller A5 and the other inner ring 9 with the tapered roller B11 respectively. External: when the utility model is running at high speed, it needs to withstand the pressure from the axial and radial directions. The tapered roller A5 is set as a three-stage structure connected by ball joints between the three rolling elements. When a tapered roller A5 After one of the rolling elements wears out, the other two rolling elements in the tapered roller A5 can still operate normally, and the worn rolling elements have little damage to the inner wall 4 of the outer ring and the outer wall 8 of the inner ring in contact with it, ensuring The smooth operation of the utility model is ensured; 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 A5 and the tapered roller B11 and move outward along the inner wall 4 of the outer ring The two expanded neck ends of the inner wall 4 of the outer ring flow, and finally throw the bearing oil to the inside of the machine. The annular grooves 2 respectively set on the two expanded neck ends of the inner wall 4 of the outer ring are respectively embedded in the oil suction ring 3. The inner wall of the outer ring 4 absorbs the bearing oil flowing to the two neck ends of the inner wall 4 of the outer ring, which avoids the disadvantage of the utility model throwing the bearing oil inside the machine during operation.

The unspecified part of the utility model is prior art.

Claims (5)

1. A double-row bearing with a single-row tapered roller combined structure, including outer ring (1), tapered roller A (5), cage (6), inner ring (9) and tapered roller B (11) , which is characterized in that: the outer ring inner wall (4) of the outer ring (1) is necked at both ends and the middle is narrowed, annular grooves (2) are respectively provided on both sides of the outer ring inner wall (4), and the two annular grooves (2) are respectively embedded with oil-absorbing rings (3), the outer wall (8) of the inner ring (9) is necked on one side and the other side is narrowed, and the outer wall (8) of the inner ring is provided with a Annular protrusion A (7), annular protrusion B (10) is provided on the necking side of the outer wall of the inner ring (8). Sub-A (5) includes rolling body A (12), rolling body B (16) and rolling body C (19). ) is provided with a cone A (13) at the end of one side of the neck expansion, and a ball head A (14) is provided at the end of the cone A (13), and the rolling body B (16) is one side of the neck expansion and the other side For necking, a ball socket A (15) is provided at the center of the end of the rolling element B (16) on the necking side, and a ball socket B ( 20), the rolling element C (19) has one side expanding and the other side constricting, and a cone B (18) is provided at the end of the rolling element C (19) on the necking side, and the cone B (18) There is a ball head B (17) at the end of the ball head, the ball head A (14) is placed in the ball socket A (15) and connected with the ball joint of the ball socket A (15), and the ball head B (17) is placed in the ball socket B (20) is internally connected with the ball joint B (20), the tapered roller B (11) is a conical frustum with one side expanding and the other side constricting, the inner ring (9) is two, and the cage ( 6) A plurality of tapered rollers A (5) arranged at intervals are limited to the inner ring outer wall (8) according to the expansion neck side of the plurality of tapered rollers A (5) located on the inner ring outer wall (8) expansion neck side Between the annular protrusion A (7) and the annular protrusion B (10), another cage (6) arranges a plurality of spaced tapered rollers B (11) according to the plurality of tapered rollers B (11) The expanded neck side is located on the outer wall of the other inner ring (8), and the expanded neck side is defined between the annular protrusion A (7) and the annular protrusion B (10) of the outer wall (8) of the other inner ring, the outer ring (1) The two ends of the inner wall (4) of the outer ring are respectively sleeved outside the inner ring (9) provided with the tapered roller A (5) and the other inner ring (9) provided with the tapered roller B (11). 2. The double-row bearing with single-row tapered rollers as a combined structure according to claim 1, characterized in that: the outer wall of the outer ring (1) is an annular planar structure. 3. According to claim 2, the single-row tapered roller is a double-row bearing with a combined structure, which is characterized in that: a chamfer transition is provided between the outer wall of the outer ring (1) and the two end faces of the outer ring (1) . 4. The double-row bearing with single-row tapered rollers as a combined structure according to claim 1, characterized in that: the inner wall of the inner ring (9) is an annular planar structure. 5. The single-row tapered roller double-row bearing with combined structure according to claim 4, characterized in that: chamfers are set between the inner wall of the inner ring (9) and the two ends of the inner ring (9) transition.