CN201944115U

CN201944115U - Cylinder roller bearing capable of bearing two-way axial force

Info

Publication number: CN201944115U
Application number: CN2011200785136U
Authority: CN
Inventors: 李慧; 黎伟; 汪久根
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2011-03-23
Filing date: 2011-03-23
Publication date: 2011-08-24
Anticipated expiration: 2021-03-23

Abstract

The utility discloses a cylinder roller bearing capable of bearing a two-way axial force, which comprises an inner ring of the cylinder roller bearing, a cylinder roller and an outer ring of the cylinder roller bearing. Retaining edges avoiding axial movements of the cylinder roller are arranged on an outer cylindrical surface of the inner ring and an inner cylindrical surface of the outer ring of the cylinder roller bearing. The outer ring of the cylinder roller bearing is formed by two rings to be integrated through a connection of an internal thread and an external thread along an axial direction, and the two rings are provided with a stopping edge respectively. Because the outer ring of the cylinder roller bearing is formed by two parts with the stopping edges, and the inner ring is provided with a double retaining edges, the bearing can bear the two-way axial force, and the bearing capacity is lager. With a combination type of a threaded connection, the cylinder roller bearing capable of bearing the two-way axial force is improved on the basis of a traditional cylinder roller bearing. The structure is simple, and the manufacture is easy. A nominal contact angle of the cylinder roller bearing is 0, the roller and a rolling way are in line contact, and the bearing capacity is large. A centrifugal force has slight effects on the cylinder roller bearing when the cylinder roller bearing is slewed, so that the working limiting speed is higher.

Description

A kind of roller bearing that bears bi-directional axial power

Technical field

The utility model relates to a kind of roller bearing, especially relates to a kind of roller bearing that bears bi-directional axial power.

Background technique

Roller bearing is known in the art, and when axle revolution work, meetings such as gear on the axle and worm screw produce radial force and axial force simultaneously to bearing, and this sometimes axial force is two-way.Because the roller bearing roller is that line contacts with raceway, can bear big radial load, can also bear larger axis sometimes to load, and limit speed is higher.Now the more common bearing radial force simultaneously and the bearing of bi-directional axial power have crossing cylinder roller bearing, tapered roller bearing and angular contact ball bearing etc. on the market, but since the roller of crossing cylinder roller bearing intersect install have that cost is higher, manufacture difficulty greatly and problem such as limit speed is low.The end face of tapered roller bearing is lubricated relatively poor, allows rotating speed lower.Angular contact ball bearing is the contact of name point, and bearing capacity is lower.General roller bearing can not bear bi-directional axial load.In view of the foregoing, will have a kind ofly be easy to make, simple in structure, limit speed is high and bearing load obvious results bearing.

Summary of the invention

The purpose of this utility model is to provide a kind of roller bearing that bears bi-directional axial power, change the problem that traditional bearing bears the multiaxis loading poor effect simultaneously, in the hope of obtain a kind ofly to be easy to make, simple in structure, limit speed is high and bearing load obvious results bearing.

The technical solution adopted in the utility model is:

A kind of roller bearing that bears bi-directional axial power comprises roller bearing inner ring, cylindrical roller and roller bearing outer ring; Roller bearing inner ring external cylindrical surface and roller bearing outer ring inner cylindrical surface all are provided with and prevent the axially movable rib of cylindrical roller; And the roller bearing outer ring is connected vertically with internal and external screw thread by two annulus and is combined into one, and described two annulus respectively have a rib.

In the described roller bearing outer ring of forming by two annulus, the axial Extreme breadth L of tapped annulus is 2 ~ 4:1 with the ratio of the axial minimum width l of tapped annulus, be L=(2 ~ 4) * l, and the internal and external threads equal in length on two annulus of composition roller bearing outer ring.

The beneficial effect that the utlity model has is:

1, the roller bearing outer ring is combined by two-part of band rib, and inner ring has two ribs, and bearing just can bear two-way axial force like this, and bearing capacity is bigger.

2, the roller bearing that can bear bi-directional axial power is improved on the basis of traditional roller bearing, and is simple in structure with the thread connecting mode combination, is easy to make.

3, the roller bearing nominal contact angle is 0 °, and roller is that line contacts with raceway, and bearing capacity is strong; Centrifugal force is little to its influence during revolution, so the operating limit rotating speed is higher.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the part enlarged view that is threaded in the structural representation of the present utility model.

Fig. 3 is a solid of rotation moving direction schematic representation in the roller bearing of the present utility model.

Among the figure: 1, be with externally threaded roller bearing outer ring, 2, tapped roller bearing outer ring, 3, the roller bearing inner ring, 4, cylindrical roller.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

As shown in Figure 1, the utility model comprises roller bearing inner ring 3, cylindrical roller 4 and roller bearing outer ring.Roller bearing inner ring 3 external cylindrical surfaces and roller bearing outer ring inner cylindrical surface all are provided with and prevent the axially movable rib of cylindrical roller; And the roller bearing outer ring is combined into one by being with externally threaded roller bearing outer ring 1 to be connected vertically with tapped roller bearing outer ring 2 usefulness internal and external screw threads, and respectively there is a rib described externally threaded roller bearing outer ring 1 and the tapped roller bearing outer ring 2 of being with.

As shown in Figure 1 and Figure 2, in the described roller bearing outer ring of forming by two annulus, the axial Extreme breadth L of tapped annulus is 2 ~ 4:1 with the ratio of the axial minimum width l of tapped annulus, be L=(2 ~ 4) * l, and the internal and external threads equal in length on two annulus of composition roller bearing outer ring.

The utility model is an example with roller bearing N1024: the outer ring outer diameter D is 215mm, the inner ring inner diameter d is 120mm, bearing width B is 40mm, on this bearing basis, improve, the roller bearing outer ring is by being with in externally threaded roller bearing outer ring 1 and tapped roller bearing outer ring 2 usefulness, outside thread connects vertically and is combined into one, in the described roller bearing outer ring of forming by two annulus, the axial Extreme breadth L of tapped annulus is 2:1 with the ratio of the axial minimum width l of tapped annulus, be L=2 * l, l=10mm, L=20mm, and the internal and external threads equal in length on two annulus of composition roller bearing outer ring; Roller bearing inner ring 3 also has two ribs, and bearing just can bear two-way axial force like this, and bearing capacity is bigger.New roller bearing is that the threaded outer ring of two-part is combined into the outer ring of new roller bearing with thread connecting mode, and V thread screw p gets 2mm, and is simple in structure, is easy to make.The roller bearing nominal contact angle is 0 °, and cylindrical roller is that line contacts with raceway, and centrifugal force is little to its influence during revolution, so the operating limit rotating speed is higher.In Fig. 3, suppose that axle and roller bearing inner ring 3 gyratory directions are for clockwise, cylindrical roller 4 gyratory directions are counterclockwise, under frictional force action, be with 1 gyratory directions in externally threaded roller bearing outer ring for clockwise, identical with roller bearing inner ring 3 gyratory directions, because of generally using thread rotary orientation to be dextrorotation, screw thread is screwed.When axle turns round work in the other direction, only need to change the Bearing Installation direction and get final product.

Above-mentioned embodiment is used for the utility model of explaining; rather than the utility model limited; in the protection domain of spirit of the present utility model and claim, any modification and change to the utility model is made all fall into protection domain of the present utility model.

Claims

1. the roller bearing that can bear bi-directional axial power comprises roller bearing inner ring, cylindrical roller and roller bearing outer ring; It is characterized in that: roller bearing inner ring external cylindrical surface and roller bearing outer ring inner cylindrical surface all are provided with and prevent the axially movable rib of cylindrical roller; And the roller bearing outer ring is connected vertically with internal and external screw thread by two annulus and is combined into one, and described two annulus respectively have a rib.

2. according to a kind of roller bearing that bears bi-directional axial power described in the claim 1, it is characterized in that: in the described roller bearing outer ring of forming by two annulus, the axial Extreme breadth L of tapped annulus is 2 ~ 4:1 with the ratio of the axial minimum width l of tapped annulus, be L=(2 ~ 4) * l, and the internal and external threads equal in length on two annulus of composition roller bearing outer ring.