CN203104181U - Motor bearing structure of coal mine heading machine - Google Patents
Motor bearing structure of coal mine heading machine Download PDFInfo
- Publication number
- CN203104181U CN203104181U CN 201220643421 CN201220643421U CN203104181U CN 203104181 U CN203104181 U CN 203104181U CN 201220643421 CN201220643421 CN 201220643421 CN 201220643421 U CN201220643421 U CN 201220643421U CN 203104181 U CN203104181 U CN 203104181U
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- main shaft
- electric machine
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Abstract
The utility model relates to a motor bearing structure of a coal mine heading machine. The motor bearing structure comprises a motor main shaft, a front end cap, a rear end cap, a front end bearing and a rear end bearing, wherein the front end cap and the rear end cap are respectively connected with a bearing outer cover and a bearing inner cover by bolts, the front end bearing and the rear end bearing are mounted between the bearing outer cover and the bearing inner cover, the front end bearing adopts a four-point contact ball bearing, and the rear end bearing adopts a column bearing. According to the structure, the four-point contact ball bearing is used at the front end of the motor, so that axial loads in two directions can be borne, and the motor of the heading machine can work normally in the conditions with large inclination.
Description
Technical field
The utility model belongs to technical field of motors, is a kind of coal mine development machine motor bearings structure.
Background technology
In coal in China industry standard MT/T477-2011 " YBU series development machine flame-proof type threephase asynchronous ", require motor upwards to be 74 ° with development machine working arm and body horizontal plane, be 32 ° downwards, use under the bear rotor deadweight condition.Not only want can bearing radial force for the bearing arrangement of motor like this, also want to bear comprise self rotor gravity and axial magnetic pull axial force.In order to satisfy above-mentioned working condition requirement, available technology adopting be the deep groove ball bearing structure, deep groove ball bearing is simple in structure, can bear radial load under high-speed rotating conditions, also can bear two-way axial load.But work as motor under the operating mode of maximum inclination angle, the contact angle of deep groove ball bearing has almost reached the limit, therefore, and the poor effect of carrying radial load.
The utility model content
The purpose of this utility model is to overcome shortcoming of the prior art, provides a kind of and can satisfy the development machine working condition requirement, supports reliably, prolongs the bearing coal mine development machine motor bearings structure in useful life.
The technical scheme of being taked is for achieving the above object: this structure comprises electric machine main shaft, forward and backward end cap and front and back ends bearing, wherein, forward and backward end cap is connected with internal bearing cover with its bearing end cover by bolt respectively, the front and back ends bearing is housed respectively between bearing end cover and the internal bearing cover, preceding end bearing adopts four-point contact ball, and rear end bearing adopts axis of a cylinder to hold.
The outside of end bearing is provided with jam nut and thrust washer before described.
Described bearing end cover is inboard to be provided with outside framework oil seal with the electric machine main shaft connecting portion, and the bearing end cover outside is provided with the axial plane oil sealing with the electric machine main shaft connecting portion.
Described internal bearing cover and electric machine main shaft connecting portion are provided with oil sealing.
According to the coal mine development machine motor bearings structure that such scheme is made, its beneficial effect is:
1,, thereby can bear the axial load that acts on both direction owing to adopted four-point contact ball.
2, the contact angle of four-point contact ball is about 35 °, is mainly used in and bears axial load, is fit to the development machine motor under big angle of inclination operating mode, runs well.
3, the inner ring of four-point contact ball is a split type structure, can make bearing put into more steel ball, and therefore very high load capacity is arranged, and especially is fit to the unsettled operating mode of development machine motor load.
4, be provided with oil sealing at internal bearing cover and electric machine main shaft connecting portion, can guarantee the good lubrication of bearing working face like this, improve the support situation of bearing, prolong the useful life of bearing.
5, bearing is the design of divergence type, and mounting means is simple and direct.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of preceding end bearing among Fig. 1.
Embodiment
Referring to Fig. 1, coal mine development machine motor bearings structure of the present utility model comprises electric machine main shaft 1, forward and backward end cap 5a, 5b and front and back ends bearing 2a, 2b, wherein, forward and backward end cap 5a, 5b are connected with internal bearing cover 3a, 3b with its bearing end cover 4a, 4b by bolt respectively, front and back ends bearing 2a, 2b are housed respectively between bearing end cover 4a, 4b and internal bearing cover 3a, the 3b, preceding end bearing 2a adopts the four-point contact ball (see figure 2), and rear end bearing 7 adopts axiss of a cylinder to hold.Be provided with jam nut 6 and thrust washer 7 in the outside of preceding end bearing 2a.The inboard of described bearing end cover 4a and electric machine main shaft 1 connecting portion are provided with outside framework oil seal 9, and the outside of bearing end cover 4a and electric machine main shaft 1 connecting portion are provided with axial plane oil sealing 8.Described internal bearing cover 3a and electric machine main shaft 1 connecting portion are provided with oil sealing 10, can guarantee the good lubrication of bearing working face like this, improve the support situation of bearing, prolong the useful life of bearing.
In the utility model, the four-point contact ball that preceding end bearing 2a uses is radially single-row angular contact ball bearing, belongs to the category of angular contact ball bearing.Can bear the axial load that acts on both direction.The radial load that can bear is certain percentage of axial load, and based on axial load.And the contact angle of four-point contact ball is about 35 °, is mainly used in and bears axial load, is fit to the development machine motor under big angle of inclination operating mode, runs well.Simultaneously, the inner ring of four-point contact ball is a split type structure, can make bearing put into more steel ball, and therefore very high load capacity is arranged, and especially is fit to the unsettled operating mode of development machine motor load.Preceding end bearing 2a adopts the design (see figure 2) of divergence type, and promptly the bearing inner race 14 of bearing outer ring 11 company steel ball 12, retainer 13 and two subdivisions can be distinguished independent installation.When Bearing Installation, earlier bearing inner race 14 is installed on the electric machine main shaft 1, end face is close to the shaft shoulder, again bearing outer ring 11 is installed together with steel ball 12 and retainer 13, also half subdivision of bearing inner race 14 can be installed, second half subdivision is installed again, is used jam nut 6 and stop washer 7 then bearing inner race 14 lockings.After installing end cap, use bearing end cover 4a connection bearing inner cap 3a that bearing outer ring 11 is fixing, such mounting means is very simple and direct.
Claims (1)
1. coal mine development machine motor bearings structure, comprise electric machine main shaft, forward and backward end cap and front and back ends bearing, it is characterized in that: forward and backward end cap is connected with internal bearing cover with its bearing end cover by bolt respectively, the front and back ends bearing is housed respectively between bearing end cover and the internal bearing cover, preceding end bearing adopts four-point contact ball, rear end bearing adopts axis of a cylinder to hold, and the outside of described preceding end bearing is provided with jam nut and thrust washer
,Described bearing end cover is inboard to be provided with outside framework oil seal with the electric machine main shaft connecting portion, and the bearing end cover outside is provided with the axial plane oil sealing with the electric machine main shaft connecting portion, and described internal bearing cover and electric machine main shaft connecting portion are provided with oil sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220643421 CN203104181U (en) | 2012-11-29 | 2012-11-29 | Motor bearing structure of coal mine heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220643421 CN203104181U (en) | 2012-11-29 | 2012-11-29 | Motor bearing structure of coal mine heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203104181U true CN203104181U (en) | 2013-07-31 |
Family
ID=48855557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220643421 Expired - Lifetime CN203104181U (en) | 2012-11-29 | 2012-11-29 | Motor bearing structure of coal mine heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203104181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329876A (en) * | 2015-07-06 | 2017-01-11 | 上海鸣志电器股份有限公司 | High axial bearing stepping linear motor |
-
2012
- 2012-11-29 CN CN 201220643421 patent/CN203104181U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329876A (en) * | 2015-07-06 | 2017-01-11 | 上海鸣志电器股份有限公司 | High axial bearing stepping linear motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
|
| CX01 | Expiry of patent term |