CN201373024Y

CN201373024Y - High-speed bearing

Info

Publication number: CN201373024Y
Application number: CN200920106079U
Authority: CN
Inventors: 石正铎; 冯家任
Original assignee: BEIJING MING ZHENG WEI YUAN (MZWY) MOTOR TECHNOLOGIES Ltd
Current assignee: NANTONG DAREN MOTOR INC.
Priority date: 2009-03-11
Filing date: 2009-03-11
Publication date: 2009-12-30
Anticipated expiration: 2019-03-11

Abstract

The utility model provides a high-speed bearing which comprises at least more than two grades of bearings; an outer seat ring of a primary bearing is also used as an inner seat ring of a secondary bearing; and the high-speed bearing is formed by extending superposition and combination along the radial or axial direction of the bearing or by mixing. By a method which leads the outer seat ring of an inner-ring bearing to have the functions of both the inner seat ring and the outer seat ring, the high-speed bearing improves the limit speed thereof. Compared with the existing high-speed bearing, the high-speed bearing has the advantages of simple structure, wide application scope and low cost.

Description

A kind of high-speed bearing

Technical field

The utility model relates to bearing, particularly a kind of high-speed bearing.

Background technique

Existing bearing is divided into rolling bearing and sliding bearing according to structure.Because bearing is influenced by structure, material, lubricated matter and lubricating system, its velocity limit is against thousands of between 1～20,000 rev/min greatly.Along with the progress of modern science and technology, produce and the field of scientific practice and the increasing of the degree of depth, constantly challenge to bearing at a high speed.Though the appearance of magnetic suspension bearing is arranged, because its complex structure, accommodation is little, effects limit such as cost height its use.

Summary of the invention

The purpose of this utility model is the defective at above-mentioned prior art, and a kind of high-speed bearing is provided, and has advantage simple in structure, applied widely, that cost is low.

The technological scheme taked of the utility model is to achieve these goals: a kind of high-speed bearing, comprise the bearing that contains inner and outer race, described high-speed bearing comprises the bearing that two-stage is above at least, be by the double inner race of making secondary bearing of the outer race of one-level bearing, successively along described bearing radially, axially or axial-radial mix and extend, stack combinations forms.Its running principle is the outer race double as inner race with bearing, and as required with this outer inner race one weight of condition, double and multiple, and its velocity limit is also with one-level, and two-stage and multistage broadening have improved its velocity limit.

Described bearing is rolling bearing or sliding bearing.

Described bearing is ball bearing or roller bearing.

Described bearing is style of opening, dust cover type or seal ring type.

The beneficial effects of the utility model are: compared to existing technology, the way of outer race function in the utility model has concurrently by the outer race with bearing, improve its velocity limit, so have advantage simple in structure, applied widely, that cost is low, satisfy the needs of production and scientific research, and can improve constantly the limit of its speed-adaptive according to actual needs with condition.

Description of drawings

As Fig. 1 a is the radially schematic representation of one-level extension of ball bearing described in the utility model;

As Fig. 1 b is the radially schematic representation of secondary extension of ball bearing described in the utility model;

As Fig. 1 c is the schematic representation of ball bearing described in the utility model one-level extension vertically;

As Fig. 1 d is the schematic representation of ball bearing described in the utility model secondary extension vertically;

As Fig. 1 e is that ball bearing described in the utility model reaches the radially schematic representation of each one-level extension respectively vertically;

As Fig. 2 a is the radially schematic representation of one-level extension of roller bearing described in the utility model;

As Fig. 2 b is the radially schematic representation of secondary extension of roller bearing described in the utility model;

As Fig. 2 c is the schematic representation of roller bearing described in the utility model one-level extension vertically;

As Fig. 2 d is the schematic representation of roller bearing described in the utility model secondary extension vertically;

As Fig. 2 e is that roller bearing described in the utility model reaches the radially schematic representation of each one-level extension respectively vertically.

Among the figure: the inner race of 1 first order ball bearing, 1.1 first order ball bearings, the outer race of 1.2 first ball bearings, the outer race of 2 second level ball bearings, 2.2 second level ball bearings.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and instantiation, but not as to qualification of the present utility model.

A kind of high-speed bearing as shown in Figure 1a is the ball bearing that extends of one-level radially.It comprises first order ball bearing 1 and second level ball bearing 2, and the outer race 1.2 double inner races of making second level ball bearing 2 that concrete is by first order ball bearing form along the radially stack combinations of described high-speed bearing.

Its expansion speed principle is: referring to Fig. 1 a, the inner race 1.1 of first order ball bearing and the outer race of first order ball bearing 1.2 are formed the one-level bearing, are established if its velocity limit is 1.5 ten thousand rev/mins; Equally, its velocity limit of secondary bearing that the outer race 1.2 of first order ball bearing and the outer race of second level ball bearing 2.2 are formed is 1.5 ten thousand rev/mins, and the velocity limit of the outer race 2.2 of the inner race 1.1 of composite balls bearing and composite balls bearing becomes 30,000 rev/mins so.That is to say that the progression of high-speed bearing increases velocity limit and also will superpose.

So the running principle of high-speed bearing is the secondary inner bearing ring of outer race double as with bearing, as required with this outer inner race one weight of condition, double and multiple, and its velocity limit is also with one-level, and two-stage and multistage broadening have improved its velocity limit.

The ball bearing that radially secondary shown in Fig. 1 b extends.The ball bearing of one-level extension vertically shown in Fig. 1 c.The ball bearing of secondary extension vertically shown in Fig. 1 d.Shown in Fig. 1 e, reach the radially ball bearing of each one-level extension respectively vertically.The roller bearing that extends of one-level radially shown in Fig. 2 a.The roller bearing that extends of secondary radially shown in Fig. 2 b.The roller bearing of one-level extension vertically shown in Fig. 2 c.The roller bearing of secondary extension vertically shown in Fig. 2 d.Shown in Fig. 2 e, reach the radially roller bearing of each one-level extension respectively vertically.They specifically all are by the double inner race of making adjacent bearing of the outer race of inner-ring bearing, successively along described bearing radially, axially or axial-radial mix and extend and form with adjacent bearing stack combinations.

Therefore the utility model can be any bearing, for example rolling bearing or sliding bearing, and ball bearing or roller bearing can also be the bearings of opening, dust cover type or seal ring type.

The way of outer race function in the utility model has concurrently by the outer race with bearing, improve its velocity limit, so have advantage simple in structure, applied widely, that cost is low, satisfy the needs of production and scientific research, and can improve constantly the limit of its speed-adaptive according to actual needs with condition.

Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.

Claims

1. high-speed bearing, it is characterized in that: described high-speed bearing comprises the bearing that two-stage is above at least, be by the double inner race of making secondary bearing of the outer race of one-level bearing, successively along described bearing radially, axially or axial-radial mix and extend stack combinations and form.

2. high-speed bearing according to claim 1 is characterized in that: described bearing is rolling bearing or sliding bearing.

3. high-speed bearing according to claim 1 is characterized in that: described bearing is ball bearing or roller bearing.

4. high-speed bearing according to claim 1 is characterized in that: described bearing is style of opening, dust cover type or seal ring type.