CN214424909U

CN214424909U - Bearing structure

Info

Publication number: CN214424909U
Application number: CN202023228253.4U
Authority: CN
Inventors: 叶骏绅; 缪鹏程
Original assignee: Suzhou Humeng Transmission Technology Co ltd
Current assignee: Suzhou Humeng Transmission Technology Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-10-19
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a bearing structure, including dabber, rolling element and holder, the inner wall of dabber outer wall and holder forms interior rolling ring and outer rolling ring structure respectively, the rolling element presss from both sides and establishes between interior rolling ring and the outer rolling ring, the rolling element is disc structure, the shaft hole diameter of dabber is less than the diameter of rolling element. The utility model discloses a rolling element structure of rolling element structure replacement ball formula of disc type reduces the rotational speed of rolling element, and the wearing and tearing of rolling element and raceway when reducing the high-speed operation of bearing on the one hand, on the other hand can reduce the sound pressure level of raceway sound when the bearing moves.

Description

Bearing structure

Technical Field

The utility model relates to a bearing structure designs the field, concretely relates to bearing structure.

Background

As shown in fig. 1. In general, most of the conventional bearings are ball bearings, the rolling bodies are balls, the number of the rolling bodies is large, and the diameter of the rolling bodies is much smaller than that of the inner ring and the outer ring of the bearing.

To determine the rotation speed of the rolling elements c, the bearing system can be considered as a planetary reduction gear system, a being the sun gear (inner ring), b being the inner gear (outer ring), and c being the planet gear (rolling elements).

When the rotating speed of the inner ring a is na and the outer ring b is fixed, the rotating speed of the rolling body c is:

when the rotating speed of the outer ring b is nb and the inner ring a is fixed, the rotating speed of the rolling body c is as follows:

suppose d is taken_a＝12，d_b＝16，d_cWhen 2, then n_ca＝2.57n_a，n_cb＝4.57n_b。

It can be inferred from the above that, in the conventional bearing, the rotating speed of the rolling bodies is higher than that of the inner ring and the outer ring during the operation.

After the traditional bearing runs at a high speed for a long time, the inner ring, the outer ring and the rolling body of the traditional bearing are seriously abraded, so that the radial play is increased, the axial non-concentricity is shaken, and the service life of the bearing is shortened.

In addition, the sound pressure level of the bearing raceway sound is increased along with the increase of the bearing clearance and the rotating speed of the rolling elements, and the noise can be effectively reduced by reducing the rotating speed of the bearing rolling elements in practical application.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a novel bearing structure, the rolling element structure of the rolling element structure replacement ball formula that adopts the disc type reduces the rotational speed of rolling element, and the wearing and tearing of rolling element and raceway when reducing the high-speed operation of bearing on the one hand, on the other hand can reduce the sound pressure level of raceway sound when the bearing operation.

In order to solve the technical problem, the utility model provides a bearing structure, including dabber, rolling element and holder, the inner wall of dabber outer wall and holder forms interior rolling ring and outer rolling ring structure respectively, the rolling element presss from both sides and establishes between interior rolling ring and the outer rolling ring, the rolling element is disc structure, the shaft hole diameter of dabber is less than the diameter of rolling element.

In a preferred embodiment of the present invention, the inner rolling ring and the outer rolling ring are at least sandwiched with three rolling elements, and the rolling elements are circumferentially and uniformly distributed.

In a preferred embodiment of the present invention, the central shaft of the rolling element is cylindrical, the rolling element is mounted in the holder, and the rolling element passes through the upper and lower sides of the holder through the central shaft.

In a preferred embodiment of the present invention, it further comprises that both sides of the central axis of the rolling element protrude into a hemispherical shape, the rolling element is installed in the holder, and the rolling element is embedded in both upper and lower sides of the holder through the central axis.

The present invention further provides a through hole provided at the center of the rolling element, a pin is inserted into the through hole, and the rolling element is mounted in the holder by the pin.

In a preferred embodiment of the present invention, the inner race is formed in a groove shape, and the rolling elements are formed in a protrusion shape to be engaged with the inner race.

In a preferred embodiment of the present invention, the inner race is formed in a convex shape, and the rolling element is formed in a concave shape to be engaged with the inner race.

In a preferred embodiment of the present invention, the holder is a split structure.

In a preferred embodiment of the present invention, the holder is a one-piece structure.

The utility model has the advantages that:

the utility model discloses a rolling element structure of rolling element structure replacement ball formula of disc type, the diameter of increase rolling element, under the same condition of input rotational speed, the utility model discloses a rolling element structure is little than the rotational speed of the rolling element structure of traditional ball formula, and the wearing and tearing of rolling element and raceway when can reducing the high-speed operation of bearing on the one hand slow down the increase of radial play to prolong the life of bearing, on the other hand can reduce the sound pressure level of raceway sound when the bearing operates, thereby reduce the running noise of bearing.

Drawings

FIG. 1 is a schematic structural view of a conventional bearing;

fig. 2 is a schematic perspective view of the bearing structure of the present invention;

fig. 3 is a schematic sectional structure view of the bearing structure of the present invention;

FIG. 4 is a schematic diagram of the rolling element structure of the present invention;

fig. 5 is a schematic view of the mandrel structure of the present invention;

fig. 6 is a schematic structural diagram of the split type retainer of the present invention;

fig. 7 is a schematic structural view of the integrated retainer of the present invention;

fig. 8 is a schematic view of the assembly structure of the bearing structure of the present invention.

The reference numbers in the figures illustrate: 1. a mandrel; 2. a rolling body; 3. a holder; 4. an inner rolling ring; 5. an outer rolling ring; 6. an adapter; 7. and a bearing seat.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 2-3, an embodiment of the bearing structure of the present invention, including dabber 1, rolling element 2 and holder 3, the inner wall of dabber 1 outer wall and holder 3 forms interior rolling ring 4 and outer rolling ring 5 structure respectively, rolling element 2 presss from both sides and establishes between interior rolling ring 4 and outer rolling ring 5, rolling element 2 is disc structure, rolling element 2 includes the center pin, the rolling element uses the center pin as the axle center rotation, the shaft hole diameter of dabber 1 is less than the diameter of rolling element 2.

In this embodiment, the diameter of the rolling element 2 is d1, the diameter of the shaft hole of the mandrel 1 is d2, and the relationship between the diameter d1 of the rolling element 2 and the diameter d2 of the shaft hole of the mandrel 1 is:

d1＝N*d2

if the relative rotational speed of the cage 3 and the mandrel 1 is set to n1, the rotational speed n of the rolling elements 2 is:

n＝n1/N

when N is 2, that is, the diameter of the rolling element 2 is 2 times the diameter of the shaft hole of the mandrel 1, the rotating speed of the rolling element 2 is only half of the relative rotating speed of the cage 3 and the mandrel 1, and as the diameter of the rolling element 2 increases, the rotating speed of the rolling element 2 is smaller relative to the relative rotating speed of the cage 3 and the mandrel 1, so that when the structure allows, the diameter of the rolling element 2 is increased as much as possible, the rotating speed of the rolling element 2 is further reduced, and when the speed of the rolling element 2 is reduced: the abrasion between the rolling body 2 and the raceway can be reduced when the bearing runs at a high speed, and the increase of radial play is slowed down, so that the service life of the bearing is prolonged; and the sound pressure level of the raceway sound during the bearing operation can be reduced, so that the operation noise of the bearing is reduced.

Specifically, in order that the rolling elements 2 can support the mandrel 1, at least three rolling elements 2 are clamped between the inner rolling ring 3 and the outer rolling ring 4, the rolling elements 2 are circumferentially and uniformly distributed, the three rolling elements 2 are connected to form an equilateral triangle structure, the mandrel 1 is an equilateral triangle inscribed circle, the mandrel 1 is supported and fixed through the stability of the triangle, and in other embodiments, the number of the rolling elements 2 can be increased according to requirements.

Referring to fig. 4, the rolling elements 2 can be connected and fixed to the cage 3 in various forms, wherein in fig. 4(a), a central axis of the rolling elements 2 is cylindrical, and the rolling elements 2 penetrate through the upper and lower sides of the cage through the central axis and are mounted in the cage 3; in fig. 4(b), both sides of the central axis of the rolling element 2 protrude into a hemispherical shape, and the rolling element 2 is embedded in the upper and lower sides of the retainer 3 through the central axis and is installed in the retainer 3; in fig. 4(c), the rolling element 2 has no central shaft structure, a through hole is arranged in the center of the rolling element 2, a pin penetrates through the through hole, and the rolling element 2 is installed in the retainer 3 through the pin.

Referring to fig. 5, the mandrel 1 and the rolling elements 2 are matched in two forms, wherein in fig. 5(a), the inner rolling ring 4 on the outer side of the mandrel 1 is in a groove shape, the outer periphery of the rolling elements 2 is in a convex shape matched with the inner rolling ring 4, and the radian of the groove is the same as that of the convex; in fig. 5(b), the inner race 4 is convex, the outer periphery of the rolling element 2 is concave in shape matching with the inner race 4, and the radian of the concave is the same as that of the convex.

Referring to fig. 6, the retainer 3 is a split structure, the retainer 3 is fixedly connected by an upper structure and a lower structure through bolts, and the retainer 3 can be opened and closed, so that the mandrel 1 and the rolling elements 2 in the retainer 3 can be conveniently replaced.

Referring to fig. 7, the holder 3 is of an integrated structure, and the structure of the holder 3 is more stable.

Referring to fig. 8, the bearing structure in this embodiment is installed on the bearing seat 7 through the adaptor 6, so that the bearing structure has many applicable scenes, is flexible and convenient to install and use, can be applied to a scene of bearing a radial load and a scene of bearing an axial load, and can keep the axial position fixed by only effectively fixing a single side of the retainer 3 when being assembled with the bearing seat 7.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides a bearing structure, its characterized in that, includes dabber, rolling element and holder, the inner wall of dabber outer wall and holder forms interior rolling ring and outer rolling ring structure respectively, the rolling element presss from both sides and establishes between interior rolling ring and the outer rolling ring, the rolling element is disc structure, the shaft hole diameter of dabber is less than the diameter of rolling element.

2. The bearing structure according to claim 1, wherein at least three rolling elements are interposed between the inner race and the outer race, and a plurality of the rolling elements are uniformly distributed in a circumferential direction.

3. The bearing structure according to claim 1, wherein the central axis of the rolling element is cylindrical, the rolling element is mounted in the cage, and the rolling element passes through the central axis on both upper and lower sides of the cage.

4. The bearing structure according to claim 1, wherein the rolling bodies protrude in a hemispherical shape on both sides of a central axis thereof, the rolling bodies are mounted in the cage, and the rolling bodies are fitted on both upper and lower sides of the cage through the central axis.

5. The bearing structure according to claim 1, wherein a through hole is provided in the center of the rolling element, a pin is inserted into the through hole, and the rolling element is mounted in the cage by the pin.

6. The bearing structure according to claim 1, wherein the inner race is groove-shaped, and the rolling elements are protrusion-shaped to engage with the inner race.

7. The bearing structure according to claim 1, wherein the inner race is convex, and the rolling elements are concave in cooperation with the inner race.

8. The bearing structure of claim 1 wherein the cage is a split structure.

9. The bearing structure of claim 1 wherein the cage is a one-piece structure.