CN218542932U - Ball-cylindrical hybrid bearing structure - Google Patents

Abstract

The utility model discloses a ball post hybrid bearing structure, including public outer lane, a plurality of inner circle, a plurality of holder, a plurality of column rolling element and a plurality of globular rolling element, a plurality of the cover of holder one-to-one is established and is circled in a plurality of, a plurality of the coaxial rotatable setting of inner circle is in public outer lane to set up, a plurality of each other side by side in public outer lane be formed with cylinder raceway and channel between the inside wall of inner circle lateral wall and public outer lane, the channel is in the both ends of public outer lane, a plurality of the column rolling element sets up in the cylinder raceway, a plurality of globular rolling element sets up in the channel. The utility model discloses a ball post mixing bearing structure, through the setting of column rolling element and globular rolling element, the effect that alright effectual realization ball post mixes makes the bearing possess high bearing capacity and moment rigidity, and can not obstruct each other.

Description

Ball-cylindrical hybrid bearing structure

technical field

The utility model relates to a bearing, in particular to a ball-column hybrid bearing structure.

Background technique

Single-row cylindrical roller bearings are commonly used in modern production and life. They generally include inner rings, outer rings and rolling elements. Single-row cylindrical roller bearings generally only bear radial loads during use. When the axial load is intermittent or intermittent, the single row cylindrical roller bearing will have axial movement, which will cause the misalignment of the inner ring and the outer ring, which will affect the use of the single row cylindrical roller bearing.

Therefore, there is a patent No. 2019209010401 in the prior art, which is a utility model named a ball-cylindrical hybrid rolling element bearing, which discloses that the bearing has both spherical rolling elements and cylindrical rolling elements by setting the rolling elements in a lantern shape. However, since the rolling element of the above structure is an integrated structure, the rolling between the spherical rolling surface and the cylindrical rolling surface is in a mutual linkage mode, so if there is uneven force on the outer ring, it will It is easy to have the problem of two scrolling modes blocking each other.

Utility model content

In view of the deficiencies in the prior art, the purpose of the utility model is to provide a ball-cylindrical hybrid bearing structure that can effectively avoid mutual obstruction.

In order to achieve the above purpose, the utility model provides the following technical solutions: a ball-cylindrical hybrid bearing structure, including a common outer ring, several inner rings, several cages, several cylindrical rolling elements and several spherical rolling elements, several The cages are sleeved on several inner rings in one-to-one correspondence, and the several inner rings are coaxially and rotatably arranged in a common outer ring, and are arranged side by side in the common outer ring. The common outer ring Cylindrical raceways and grooves are formed between the inner ring and the inner side walls of the outer walls of several inner rings, respectively for the placement of cylindrical rolling elements and spherical rolling elements. have rounded corners.

As a further improvement of the present utility model, the cage includes a spherical cage and a cylindrical cage, and several cylindrical holes are opened on the cylindrical cage, and several cylindrical rolling bodies are arranged on the cylinder one by one. In the hole, several ball holes are opened on the spherical surface cage, one side of the hole wall of the ball hole is opened, and the spherical rolling bodies are arranged in the ball hole one by one, wherein the spherical surface One end of the cage relative to the open hole wall of the spherical hole is arranged towards the cylinder cage.

As a further improvement of the utility model, there is a gap between the inner side wall and the inner ring of the spherical cage, and the diameter of the spherical hole is smaller than the diameter of the spherical rolling element, and the spherical hole is stuck in the spherical rolling element. On the upper hemisphere, the inner side wall of the cylindrical cage is attached to the outer side wall of the inner ring, and the diameter of the cylindrical hole is equal to the diameter of the cylindrical rolling body, and the cylindrical hole is located in the middle of the cylindrical rolling body .

As a further improvement of the utility model, the corresponding inner rings of the spherical rolling elements are located at both ends of the common outer ring.

As a further improvement of the utility model, an oil passing ring groove is opened on the wall of the inner ring at the opposite end of the two inner rings at the two ends of the common outer ring.

The beneficial effect of the utility model is that, on the one hand, the bearing capacity and moment rigidity of the bearing can be greatly expanded through the support of the spherical rolling elements on both sides and the middle columnar rolling elements, and at the same time, it has a certain self-aligning performance. Under the condition of the same structural size, the bearing has high load-bearing capacity and moment rigidity. On the other hand, due to the arrangement of two rows of spherical rolling elements, the overall friction moment of the bearing is not increased, and energy consumption is reduced. At the same time, the spherical rolling elements and columnar There is no connecting structure between the rolling elements, so there will be no vibration problems caused by the integrated setting in the prior art, and the method of rounded corners on the inner ring wall and outer ring wall at both ends of the inner ring is adopted. , It can avoid the problem of broken due to the collision and friction between the two ends of the inner ring when there is relative rotation between the inner rings.

Description of drawings

Fig. 1 is the overall structural diagram of the ball-cylindrical hybrid bearing structure of the present invention.

Detailed ways

The utility model will be further described in detail below in conjunction with the embodiments given in the accompanying drawings. In this embodiment, four inner rings 2 are mainly used to realize the effects of two sets of linear contact bearings and two sets of angular contact ball bearings. .

Referring to Fig. 1, a ball-cylindrical hybrid bearing structure in this embodiment includes a common outer ring 1, several inner rings 2, several cages 3, several cylindrical rolling elements 4 and several spherical rolling elements 5, Several cages 3 are sleeved on several inner rings 2 in one-to-one correspondence, and several inner rings 2 are coaxially and rotatably arranged in the common outer ring 1 and are arranged side by side in the common outer ring 1 It is set that a cylindrical raceway and a channel are formed between the outer side walls of several inner rings 2 and the inner side wall of the common outer ring 1, and the channels are located at both ends of the common outer ring 1, and the common outer ring 1 and several Cylindrical raceways and grooves are formed between the inner side walls of the outer side walls of the inner ring 2 for the placement of cylindrical rolling elements 4 and spherical rolling elements 5 respectively. There are rounded corners. In the process of using the bearing of this embodiment, the outer part rotates with the common outer ring 1, so that the cylindrical rolling body 4 and the spherical rolling body 5 roll in the cylindrical raceway and the groove, so as to achieve relative Rotatable effect, and the setting of the cylindrical rolling body 4 can be used to reply the load capacity and moment rigidity of the extended bearing. The problem of vibration is easy to occur. At the same time, there is no connection structure between the spherical rolling body and the cylindrical rolling body, so the problem of vibration caused by the integrated setting in the prior art will not occur. At the same time, the edges of the two ends of the inner ring 2 are used The arrangement of the arc structure can avoid the problem of the inner rings 2 being broken due to collision and friction of the ring edges caused by the relative rotation between the inner rings 2 .

As an improved specific embodiment, the cage 3 includes a spherical cage 31 and a cylindrical cage 32, the cylindrical cage 32 is provided with several cylindrical holes, and several cylindrical rolling elements 4 One corresponding set in the cylindrical hole, the spherical cage 31 is provided with several ball holes, one side hole wall of the ball hole is opened, and the spherical rolling elements 5 are arranged in one-to-one correspondence. In the ball hole, one end of the spherical cage 31 relative to the opening wall of the ball hole is set toward the cylindrical cage 32, and the cylindrical rolling body can be effectively realized by the spherical cage 31 and the cylindrical cage 32. 4 and the spherical rolling element 5 have a very good position-limiting effect, and the method of opening the ball hole in one direction can make the spherical rolling element 5 roll better in the channel.

As an improved specific implementation, there is a gap between the inner side wall of the spherical cage 31 and the inner ring 2, the diameter of the spherical hole is smaller than the diameter of the spherical rolling element 5, and the spherical hole is stuck in the On the upper hemisphere of the spherical rolling body 5, the inner side wall of the cylindrical cage 32 is attached to the outer side wall of the inner ring 2, and the diameter of the cylindrical hole is equal to the diameter of the cylindrical rolling body 4, and the cylindrical hole is in the At the position of the middle part of the cylindrical rolling element 4, through the setting of the above structure, the problem of increased friction caused by the contact between the spherical cage 31 and the outer wall of the inner ring 2 can be avoided, and the energy consumption can be effectively reduced. The manner in which the surface cage 32 abuts against the outer side wall of the inner ring 2 can effectively increase the overall supporting force and increase the stability of the cylindrical rolling body 4 when rolling.

As an improved embodiment, the inner rings 2 corresponding to the spherical rolling elements 5 are located at both ends of the common outer ring 1, and the angular contact ball bearings formed by combining the spherical rolling elements 5 are arranged on the common outer ring 1. The two ends of the ring 1, on the one hand, the end of the bearing does not carry a lot of load, so the angular contact ball bearing group can play a good role in carrying the load, and it can also reduce the overall frictional moment of the bearing without increasing energy consumption.

As an improved specific embodiment, an oil passing ring groove 6 is opened on the inner ring wall at the opposite end of the two inner rings 2 at the two ends of the common outer ring 1. Through the setting of the oil passing ring groove 6, it can The lubricating oil enters the inside of the bearing through the shaft, realizing the lubrication between multiple inner rings 2 and between the inner rings 2 and the common outer ring 1 .

To sum up, the ball-cylindrical hybrid bearing structure of this embodiment can effectively constitute a ball-cylindrical hybrid bearing structure through the arrangement of a plurality of inner rings 2, cylindrical rolling elements 4 and spherical rolling elements 5. The rolling elements 4 and the spherical rolling elements 5 are not connected to each other, so there will be no problem of easy vibration during operation due to the integrated arrangement in the prior art.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (5)

1. The utility model provides a ball post hybrid bearing structure which characterized in that: the novel rolling bearing comprises a public outer ring (1), a plurality of inner rings (2), a plurality of retainers (3), a plurality of columnar rolling bodies (4) and a plurality of spherical rolling bodies (5), wherein the retainers (3) are sleeved on the plurality of inner rings (2) in a one-to-one correspondence manner, the inner rings (2) are coaxially and rotatably arranged in the public outer ring (1) and are arranged in the public outer ring (1) side by side, cylindrical roller paths and grooves are formed between the inner side walls of the outer side walls of the public outer ring (1) and the plurality of inner rings (2) and are respectively used for placing the columnar rolling bodies (4) and the spherical rolling bodies (5), and round corners are respectively arranged on the inner ring walls and the outer ring walls at two ends of the inner rings (2).

2. The ball-and-post mixing bearing structure of claim 1, wherein: holder (3) include ball holder (31) and cylinder holder (32), a plurality of cylinder hole has been seted up on cylinder holder (32), a plurality of the setting of column rolling element (4) one-to-one is downthehole at the cylinder, a plurality of ball hole has been seted up on ball holder (31), one side pore wall in ball hole is for opening the setting, the setting of ball rolling element (5) one-to-one is downthehole at the ball, and wherein, ball holder (31) set up towards cylinder holder (32) for the one end of the hole wall of beating in ball hole.

3. The ball-and-post mixing bearing structure of claim 2, wherein: leave the clearance between inside wall and the inner circle (2) of spherical retainer (31), the aperture in ball hole is less than globular rolling element (5) ball footpath, and this ball hole is blocked on the last hemisphere of globular rolling element (5), the inside wall laminating of cylinder retainer (32) sets up on the lateral wall of inner circle (2), and the aperture in cylinder hole equals with the diameter of column rolling element (4), and this cylinder hole is in the position at the middle part of column rolling element (4).

4. The ball-and-post mixing bearing structure of claim 3, wherein: the corresponding inner rings (2) of the spherical rolling bodies (5) are positioned at two ends of the common outer ring (1).

5. The ball-and-post mixing bearing structure of claim 4, wherein: and an oil passing ring groove (6) is formed in the inner ring wall at one end of each of the two inner rings (2) at the two ends of the public outer ring (1) which are opposite to each other.

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