CN205945338U

CN205945338U - Bearing inner cup, bearing group and rotating machinery equipment

Info

Publication number: CN205945338U
Application number: CN201620693463.5U
Authority: CN
Inventors: 张伟; 郝木兰; 吴玉红
Original assignee: Siemens Electrical Drives Ltd
Current assignee: Siemens Electrical Drives Ltd
Priority date: 2016-06-30
Filing date: 2016-06-30
Publication date: 2017-02-08
Anticipated expiration: 2026-06-30

Abstract

The utility model discloses a bearing inner cup, bearing group and rotating machinery equipment. Wherein, the bearing inner cup has: first counterface, its ultrasion vibration sysytem with the bearing room cooperatees to through screw spare with the ultrasion vibration sysytem of bearing room is connected, with the second counterface, its terminal surface with the bearing inner race of bearing closely cooperates, just the second counterface with frictional force between bearing inner race's the terminal surface can prevent bearing inner race is rotatory. The utility model provides a technical scheme can satisfy under the condition of certain fit clearance, prevents that bearing inner race from producing circular motion, and then reduces the wearing and tearing of bearing room to improve bearing life.

Description

Internal bearing cover, bearing group and rotating machinery

Technical field

The utility model is related to mechanical transmission fields, particularly a kind of internal bearing cover, bearing group and rotating machinery.

Background technology

In mechanical transmission fields, the axle that is made up of bearing, axle, bearing chamber, internal bearing cover, bearing end cover and associated component Holding group is a conventional assembly.Under normal circumstances, the cooperation between bearing outer ring and bearing chamber will not tension, therefore in bearing In the course of work, bearing outer ring may produce circumferencial direction motion under Dynamic Loading, and relative motion can lead to bearing Room or the abrasion of bearing outer ring, and then affect the service life of bearing.

For this reason, those skilled in the art are striving to find solution.

Utility model content

In view of this, the utility model one side proposes a kind of internal bearing cover, on the other hand proposes a kind of bearing group And rotating machinery, in order in the case of meeting certain fit clearance, to prevent bearing outer ring from producing circular motion, and then drop The abrasion of low bearing chamber, and improve bearing service life.

Internal bearing cover in a kind of bearing group proposing in the utility model, described bearing group also includes bearing and bearing Room, described internal bearing cover has：First counterface, it is matched with the installation end face of described bearing chamber, and passes through screw element It is connected with the installation end face of described bearing chamber；With the second counterface, it is tight with the end face of the bearing outer ring of described bearing Cooperation, and the frictional force between described second counterface and the end face of described bearing outer ring can stop described bearing outer ring rotation Turn.

In one embodiment, described second counterface has the roughness of setting.

In one embodiment, the described roughness setting is as Rz63.

In one embodiment, have between one between described first counterface and the installation end face of described bearing chamber Gap.

In one embodiment, the width in described gap is 0.1mm.

A kind of bearing group proposing in the utility model, including：The internal bearing cover of any of the above-described kind of implementation.

A kind of rotating machinery proposing in the utility model, including：Above-mentioned bearing group；Or, any of the above-described kind The internal bearing cover of implementation.

In one embodiment, described rotating machinery is motor or reductor.

Can be seen that from such scheme and be connected by screw with bearing chamber due to the utility model middle (center) bearing inner cap, because This internal bearing cover will not rotate, and using tight fit, such second counterface and axle between internal bearing cover and bearing Frictional force between the end face of bearing outer-ring just can stop bearing outer ring from rotating.

Further, by increasing the roughness of the end face that internal bearing cover is contacted with bearing outer ring, can increase further Itself frictional force and bearing outer ring between, thus ensure that bearing outer ring will not rotate further.

Additionally, by arranging certain gap between internal bearing cover and bearing chamber, control bearing can be further facilitated Tight fit between inner cap and bearing outer ring, makes it easy to realize and installs.

Brief description

Preferred embodiment of the present utility model will be described in detail by referring to accompanying drawing below, make the ordinary skill people of this area Member becomes apparent from above and other feature and advantage of the present utility model, in accompanying drawing：

Fig. 1 is a kind of structural representation of bearing group in the utility model embodiment.

Fig. 2 is the partial sectional view of the internal bearing cover in bearing group shown in Fig. 1.

Wherein, reference is as follows：

Label	Implication
		1	Axle
2	Bearing
		21	The end face of bearing outer ring
3	Bearing chamber
		31	End face is installed
4	Internal bearing cover
		41	First counterface
42	Second counterface
		5	Bearing end cover
6	Disc
		7	Snap ring

Specific embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, by the following examples to the utility model Further describe.

Fig. 1 is a kind of structural representation of bearing group in the utility model embodiment.Fig. 2 is in bearing group shown in Fig. 1 The partial sectional view of internal bearing cover.

In conjunction with shown in Fig. 1 and Fig. 2, the bearing group in the utility model embodiment includes：Axle 1, bearing 2, bearing chamber 3, axle Hold inner cap 4, bearing end cover 5.Additionally, bearing group generally also includes disc 6, snap ring 7 and sealing ring (not shown) etc..

Wherein, bearing 2 is sleeved on axle 1.

Bearing chamber 3 and the bearing outer ring interference fits of bearing 2.Certainly, it is likely to coordinate using gap in some applications.

Internal bearing cover 4 is located at the inner side of bearing 2, has the first counterface 41 and the second counterface 42 thereon.Wherein, First counterface 41 is matched with the installation end face 31 of bearing chamber 3, and the installation end face of the first counterface 41 and bearing chamber 3 31 can (in figure only shows the installation site of screw, not shown specific screw by center line c by several screw elements Part) connect.This screw element can be screw, or bolt and nut etc..The end face of the bearing outer ring of the second counterface 42 and bearing 2 21 tight fits, so that the frictional force between the second counterface 42 and the end face 21 of bearing outer ring can stop described bearing Outer ring rotates.

In order to improve the frictional force between the second counterface 42 and the end face 21 of bearing outer ring, it is possible to increase the second abutting end The roughness in face.For example, the roughness of the second counterface 42 can be Rz63 etc..

Additionally, being fitted close with the end face 21 of the bearing outer ring of bearing 2 to meet the second counterface 42, in processing the During one counterface 41, can have a case that a gap according to the first counterface 41 and installing of bearing chamber 3 between end face 31 It is processed.For example, the width in this gap can be 0.1mm etc..

Bearing end cover 5 is located at the outside of bearing 2.

Disc 6 is used for providing lubricant grease to bearing 2.

Snap ring 7 is used for bearing 2 and disc 6 are positioned.

Sealing ring is used for bearing end cover 5 is sealed, and prevents dust etc. from entering in bearing group.

Above-mentioned bearing group is only one of the utility model example, and in other implementations, bearing group can also have Other structure ways of realization, are not defined to its concrete structure herein.

A kind of rotating machinery is also provided, it may include above-mentioned internal bearing cover 4 or bag in the utility model embodiment Include above-mentioned bearing group.This rotating machinery can be motor, reductor etc..Under normal circumstances, the bearing in the present embodiment Group can be located at the drive end of rotating machinery.

The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all this Within the spirit of utility model and principle, any modification, equivalent substitution and improvement made etc., should be included in the utility model Protection domain within.

Claims

1. the internal bearing cover (4) in a kind of bearing group, described bearing group also includes bearing (2) and bearing chamber (3), and its feature exists In described internal bearing cover (4) has：

First counterface (41), it is matched with the installation end face (31) of described bearing chamber (3), and by screw element with described The installation end face (31) of bearing chamber (3) is connected；With

Second counterface (42), it is fitted close with the end face (21) of the bearing outer ring of described bearing (2), and described second joins Close the frictional force between end face (42) and the end face (21) of described bearing outer ring and can stop described bearing outer ring rotation.

2. internal bearing cover according to claim 1 is it is characterised in that described second counterface (42) has the thick of setting Rugosity.

3. internal bearing cover according to claim 2 is it is characterised in that the described roughness setting is as Rz63.

4. internal bearing cover according to any one of claim 1 to 3 is it is characterised in that described first counterface (41) And the installation end face (31) of described bearing chamber (3) between, there is a gap.

5. internal bearing cover according to claim 4 is it is characterised in that the width in described gap is 0.1mm.

6. a kind of bearing group is it is characterised in that include：Internal bearing cover (4) as any one of claim 1 to 5.

7. a kind of rotating machinery is it is characterised in that include：Bearing group as claimed in claim 6；Or, such as right will Seek the internal bearing cover (4) any one of 1 to 5.

8. rotating machinery according to claim 7 is it is characterised in that described rotating machinery is motor or deceleration Machine.