CN207454545U - A Double-layer Bearing with Tapered Roller Combination Structure - Google Patents

Abstract

A kind of taper roller is the double-deck bearing of combining structure, is related to a kind of double-deck taper roll bearing, by retainer A（6）By multiple spaced taper roller A（5）It is limited to middle ring outer wall（8）Annular protrusion A（7）With annular protrusion B（9）Between, by retainer B（14）By multiple spaced taper roller B（15）It is limited to interior ring outer wall（11）Annular protrusion D（13）With annular protrusion C（10）Between；The utility model passes through the three stage structure that is respectively set to connect by flexural pivot between three rolling elements by taper roller A and taper roller B, it realizes after a rolling element in a taper roller A or a taper roller B is worn, other two rolling elements can also work on, and realize the utility model steady and long-life purpose when being used in robot or host.

Description

A Double-layer Bearing with Tapered Roller Combination Structure

【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 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 deficiencies in the background technology, the utility model discloses a double-layer bearing with tapered rollers as a combined structure, by setting the tapered roller A and the tapered roller B respectively as three rolling elements connected by a ball joint The three-stage structure realizes that when one rolling element in one tapered roller A or one tapered roller B wears, the other two rolling elements can continue to work, and at the same time reduce the impact of the worn rolling element on the appearance of the utility model. The wear of the inner wall of the ring, the outer wall of the middle ring or the inner wall of the middle ring, the outer wall of the inner ring, 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, after inserting the oil suction ring A and the oil suction ring B, effectively solve the problem. The drawback of tapered roller A and tapered roller B throwing oil to the inside of the machine during operation of the utility model is eliminated, and the purpose of the utility model being stable and long-lived when used on a robot or a main engine is realized.

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

A double-layer bearing with tapered rollers in a 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, and the inner wall of the outer ring of the outer ring is one side The other side of the neck is expanded and the neck is narrowed. There is an annular groove A 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 and the other side contracted. The neck is provided with an annular protrusion A on the neck expanding 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. , there is an annular groove B on the neck expansion side of the inner wall of the middle ring, and an oil-absorbing ring B is embedded in the annular groove B. There is an annular protrusion D on the expanding neck side of the inner 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 is a One side expands the neck and the other side shrinks the neck. A cone A is provided at the end of the rolling element A on one side of the expansion neck, and a ball head A is provided at the end of the cone A. The rolling element B is one side expanding the neck and the other side For necking, 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 expanding side. One side is constricted, 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. The ball head A is placed in the ball socket A and balls with the ball socket A. Hinge connection, the ball head B is placed in the ball socket B and connected with the ball socket B, the tapered roller B has the same structure as the tapered roller A, and the tapered rollers A arranged at intervals are arranged by the cage A according to The expanded neck side of the plurality of tapered rollers A is located on the expanded neck side of the outer wall of the middle ring and is limited between the annular protrusion A and the annular protrusion B on the outer wall of the middle ring. The sub-B is 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 outer wall of the inner ring. On the outside of a plurality of tapered rollers A arranged at intervals, 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 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 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 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 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 tapered roller described in the utility model is a double-layer bearing with a combined structure. By setting the tapered roller A and the tapered roller B respectively as a three-stage structure in which the three rolling elements are connected by a ball joint, the current bearing is realized. After one rolling element in one tapered roller A or one tapered roller B is worn, the other two rolling elements can continue to work, and at the same time, the impact of the worn rolling element on the inner wall of the outer ring, the outer wall of the middle ring or the middle ring of the utility model is reduced. The wear of the inner wall of the ring and the outer wall of the inner ring, 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 tapered rolling when the utility model is running. The disadvantages of roller A and tapered roller B throwing oil to the inside of the machine have achieved the purpose of the utility model being stable and long-lived when used on a robot or host machine; the utility model is novel and unique in design, strong in practicability, energy saving and consumption reducing, and has 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 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 of the present invention;

Fig. 6 is a half-sectional view of the tapered roller 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 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 middle 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 neck expanded side of the inner wall 4 of the outer ring. An oil-absorbing ring A3 is embedded in the annular groove A2. The outer ring The outer wall of the outer ring of 1 is an annular planar structure, and a chamfer transition is set between the outer wall of the outer ring of the outer ring 1 and the two ends of the outer ring 1, and the outer wall of the middle ring 19 of the middle ring 19 is expanded on one side and shrunk on the other. The neck is provided with an annular protrusion A7 on the neck expansion side of the outer wall 8 of the middle ring, and an annular protrusion B9 is provided on the narrowing side of the outer wall 8 of the middle ring. One side of the neck is narrowed, and an annular groove B18 is provided on the side of the neck expansion of the inner wall 16 of the middle ring, and an oil-absorbing ring B17 is embedded in the annular groove B18. For necking, 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. The inner wall of the inner ring 12 is an annular planar structure, A chamfer transition is provided between the inner wall of the inner ring 12 and the two ends of the inner ring 12. The tapered roller A5 includes rolling elements A20, rolling elements B24 and rolling elements C27. Side constriction, a cone A21 is provided at the end of the expanding neck 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 constricting. A ball socket A23 is provided at the center of the end of the necking side of the body B24, and a ball socket B28 is provided at the center of the end of the rolling body B24 on the necking side. A cone B26 is provided at the end of the necking 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 connected with the ball joint of the ball socket A23. B25 is placed in the ball socket B28 and connected with the ball joint of the ball socket B28. The tapered roller B15 has the same structure as the tapered roller A5. The widened neck side of A5 is located on the widened side of the outer wall 8 of the middle ring and is limited between the annular protrusion A7 and the annular protrusion B9 of the outer wall 8 of the middle ring. A plurality of spaced tapered rollers B15 are arranged by the cage B14 The expanded neck side of the plurality of tapered rollers B15 is located on the expanded neck side of the outer wall 11 of the inner ring and is limited between the annular protrusion D13 and the annular protrusion C10 of the outer wall 11 of the inner ring, and the inner wall 4 of the outer ring of the outer ring 1 is sleeved on Outside the plurality of tapered rollers A5 arranged at intervals, the inner wall 16 of the middle ring 19 is sleeved on the outside of the plurality of tapered rollers B15 arranged at intervals.

The 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, and then Put the matching tapered rollers B15 into the multiple tapered roller grooves provided on the cage B14 respectively, put the middle ring 19 on it, apply a small amount of bearing oil on the outer wall 8 of the middle ring 19 of the middle ring 19, and put the The cage A6 is placed on the middle ring 19, and then the matching tapered rollers A5 are placed in the multiple tapered roller grooves provided on the cage A6, and the outer ring 1 is put on; During operation, it needs to withstand axial and radial pressure. The tapered roller A5 and the tapered roller B15 are respectively set as a three-stage structure in which the three rolling elements are connected by a ball joint. When a tapered roller A5 or After one rolling element in a tapered roller B15 wears out, the tapered roller A5 or the other two rolling elements in the tapered roller B15 can still operate normally. The damage to the outer wall 8 of the middle ring or the inner wall 16 of the middle ring and the outer wall 11 of the inner ring is less, 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 roll along with the cone. The rotation of the child 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, and is set at the neck expansion end of the inner wall 16 of the middle ring After the ring groove B18 is embedded in the oil suction ring B17, it can effectively absorb the bearing oil flowing along the inner wall 16 of the middle ring to the neck expansion end of the inner wall 16 of the middle ring, and the bearing oil applied on the outer wall 8 of the middle ring will follow The rotation of the tapered roller A5 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 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, which avoids the bearing oil from being thrown into the machine when the utility model is running. Disadvantages of oil.

The unspecified part of the utility model is prior art.

Claims (5)

1. a kind of taper roller is the double-deck bearing of combining structure, including outer ring（1）, taper roller A（5）, retainer A（6）, it is interior Circle（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）For one Neck opposite side necking down is expanded in side, in outer ring inner wall（4）Expansion neck one 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 one side, in middle ring outer wall（8）Expansion neck one side Equipped with annular protrusion A（7）, in middle ring outer wall（8）Necking down one side be equipped with annular protrusion B（9）, centre circle（19）Centre circle inner wall （16）Expand neck opposite side necking down for one side, in centre circle inner wall（16）Expansion neck one side be equipped with annular groove B（18）, in annular groove 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 one side, in interior ring outer wall （11）Expansion neck one side be equipped with annular protrusion D（13）, in interior ring outer wall（11）Necking down one side be equipped with annular protrusion C（10）, circle Bore roller A（5）Including rolling element A（20）, rolling element B（24）With rolling element C（27）, rolling element A（20）It is another to expand neck for one side 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 bulb A （22）, rolling element B（24）Expand neck opposite side necking down for one side, in rolling element B（24）The centre of one side end of necking down is equipped with 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）For one side Expand neck opposite side necking down, in rolling element C（27）One side end of necking down be equipped with cone B（26）, in cone B（26）End be equipped with 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）For with taper roller A（5）Identical structure, by retainer A （6）By multiple spaced taper roller A（5）According to multiple taper roller A（5）Expansion neck one side be located at middle ring outer wall（8） Expansion neck one 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 one side be located at interior ring outer wall（11）Expansion Neck one 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. taper roller according to claim 1 is the double-deck bearing of combining structure, 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-deck bearing of combining structure, 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-deck bearing of combining structure, it is characterized in that：Inner ring（12）Inner ring Inner wall is ring plain structure.

5. taper roller according to claim 4 is the double-deck bearing of combining structure, it is characterized in that：In inner ring（12）It is interior Enclose inner wall and inner ring（12）Both ends of the surface between be arranged to chamfered transition.