CN202900275U - High reliability rocker arm of coal mining machine - Google Patents
High reliability rocker arm of coal mining machine Download PDFInfo
- Publication number
- CN202900275U CN202900275U CN 201220518531 CN201220518531U CN202900275U CN 202900275 U CN202900275 U CN 202900275U CN 201220518531 CN201220518531 CN 201220518531 CN 201220518531 U CN201220518531 U CN 201220518531U CN 202900275 U CN202900275 U CN 202900275U
- Authority
- CN
- China
- Prior art keywords
- bearing
- planetary mechanism
- double
- roller bearing
- mining machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a high reliability rocker arm of a coal mining machine which comprises a shell, a straight gear train, a planetary mechanism and a rotary drum, wherein the planetary mechanism comprises a first support bearing arranged at the coal wall side, and a second support bearing arranged at the mined-out side; a cylindrical roller bearing is adopted by the first support bearing, and the first support bearing is used for bearing part of the radial force of the planetary mechanism instead of axial force; a double-row tapered roller bearing is adopted by the second support bearing, and the second support bearing is used for bearing part of the radial force and all the axial force of the planetary mechanism; and the radial force of the planetary mechanism born by the second support bearing is smaller than that born by the first support bearing. According to the high reliability rocker arm of the coal mining machine, the cylindrical roller bearing is adopted by the support bearing at the coal wall side, and the double-row tapered roller bearing is adopted by the support bearing at the mined-out side, so that the problem that the service life of the support bearing at the coal wall side of the planetary mechanism is not enough can be solved; and furthermore, the length of the planetary mechanism is effectively shortened, so that the problem of structural design of the high-power thin coal seam coal mining machine can be solved.
Description
Technical field
The utility model belongs to coal mine machinery equipment technology field, relates to a kind of coal-winning machine, relates in particular to a kind of rocker arm of coal mining machine of high reliability.
Background technology
China's girdle complex geologic conditions, work plane tomography, dirt band stone are intricate.For so that low seam mining machinery has high reliability, low seam mining machinery is more and more to high-power low seam mining machinery development.The low seam mining machinery fuselage is short, and the space is little, and along with the power that transmits and the increase of moment of torsion, the layout of transmission system becomes and has certain difficulty.
Increase along with rocker arm of coal mining machine power, the particularly increase of rocking arm clipping force, to guarantee simultaneously in limited girdle space that (rocking arm planetary mechanism diameter need be controlled in the certain size for the cutting capacity of rocking arm and effect of loading coal, so that cylinder has certain loading blade, reach certain effect of loading coal; Planetary mechanism length need to be controlled in the certain size, installs rear littlely from the transporter size so that have the cylinder of one fixed width, reaches certain effect of loading coal) so that design difficulty increases greatly.Simultaneously, the complexity of China's girdle condition (broken such as roof, roof pressure is large, needs to adopt shallow section dark cylinder could satisfy) will be designed the rocking arm (planetary mechanism) that mates with shallow section dark cylinder, has then more increased design difficulty.
See also Fig. 1, (the another kind of common structure of existing rocking arm planetary mechanism is that the two ends of planetary mechanism are respectively supported by a single-row tapered roller bearing to Fig. 1, need to adjust end play by the mode of adjusting pad by the assembler when this structure is installed for existing coal cutter rocker arm planet mechanism common structure.The bigger than normal or less than normal of gap will cause two single-row tapered roller bearing life-spans to be greatly affected, and often owing to there is not the assembling technician of specialty, the planetary mechanism of rocking arm is generally on the low side application life when each large colliery use and maintenance of China is installed; Along with the needs of efficient high reliability exploitation, the development of coal-winning machine technology, the tendency of Fig. 1 structure generally is partial in the industry in the design of coal cutter rocker arm planet mechanism).Shown in Figure 1, rocking arm is comprised of housing 1, straight-tooth train 2, planetary mechanism 3, cylinder 4; Planetary mechanism 3 forms by adopting sky side bearing 31, rib side bearing 32, planet carrier 33 etc.; Planet carrier 33 is by rib side bearing 32 and adopt 31 supports of sky side bearing.Because this existing structure rib side bearing 32 adopts double-row conical bearing, should bear most of radial load of rocking arm and bear again whole axial forces, so this double-row conical bearing life-span is generally on the low side; Especially in the planetary mechanism of girdle high-power coal cutter rocking arm: the planetary mechanism length requirement is short, the requirement of planetary mechanism diameter is little, brings very large difficulty for the structure design of planetary mechanism.
Problem for high-power low seam mining machinery rocking arm planetary mechanism arrangement exists need to find a kind of novel structure to solve the Structure Designing Problem of planetary mechanism.
The utility model content
Technical problem to be solved in the utility model is: a kind of rocker arm of coal mining machine of high reliability is provided, can prolongs the planetary mechanism rib side spring bearing life-span.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of rocker arm of coal mining machine of high reliability, described rocking arm comprise housing, straight-tooth train, planetary mechanism, cylinder; Described planetary mechanism comprises the first spring bearing of being arranged at the rib side, is arranged at the second spring bearing of adopting the sky side; Described the first spring bearing adopts cylinder roller bearing or spheric roller bearing, bears the part radial load of planetary mechanism and does not bear axial force; Described the second spring bearing adopts double-row conical bearing, bears the part radial load and whole axial forces of planetary mechanism; The second spring bearing bears the radial load of planetary mechanism is born planetary mechanism less than the first spring bearing radial load.
As a kind of preferred version of the present utility model, described the first spring bearing adopts full-complement cylinder roller bearing or non-full-complement cylinder roller bearing.
As a kind of preferred version of the present utility model, described housing comprises partition wall, shell hole; The straight-tooth train comprises the 3rd bearing; Planetary mechanism comprises that double-row conical bearing, cylinder roller bearing, planet carrier, bearing support, seal receptacle, side stretch, gland, transition rings, little gland; Described planet carrier is stretched transmission of power to cylinder by the side; One end of planet carrier is connected with double-row conical bearing through thin cover, and double-row conical bearing is connected with the shell hole by transition rings, gland; The other end of planet carrier is connected with cylinder roller bearing, and cylinder roller bearing is connected with bearing support, and bearing support is connected to housing through ring gear by screw.
As a kind of preferred version of the present utility model, by the first screw that inner ring group and the planet carrier of double-row conical bearing is fastening by little gland, thin cover, by the second screw that the outer ring group of double-row conical bearing is mutually fastening by gland, transition rings, by the 3rd screw that outer ring group and the rocking arm housing of transition rings, gland, double-row conical bearing is fastening; Stretch by the 4th screw by the side cylinder roller bearing inner ring and planet carrier is fastening, by the 5th screw that cylinder roller bearing outer ring and rocking arm housing is fastening by seal receptacle, bearing support.
The beneficial effects of the utility model are: the rocker arm of coal mining machine of the high reliability that the utility model proposes, rib side spring bearing adopts cylinder roller bearing, adopt sky side spring bearing and adopt double-row conical bearing, solved the problem of planetary mechanism rib side spring bearing life-span deficiency; Effectively shorten again simultaneously the length of planetary mechanism, solved the Structure Designing Problem of girdle high-power coal cutter.
Description of drawings
Fig. 1 is the structural representation of existing rocker arm of coal mining machine.
Fig. 2 is the structural representation of the utility model rocker arm of coal mining machine.
The specific embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 2, the utility model has disclosed a kind of rocker arm of coal mining machine of high reliability, comprising: housing 1, straight-tooth train 2, planetary mechanism 3, cylinder 4.
Described housing 1 comprises partition wall 11, shell hole 12; Straight-tooth train 2 comprises the 3rd bearing 21.Planetary mechanism 3 comprises that double-row conical bearing 31 ', cylinder roller bearing 32 ', planet carrier 33, bearing support 34, seal receptacle 35, side stretch 36, gland 37, transition rings 38, little gland 39.Described cylinder roller bearing 32 ' adopts full-complement cylinder roller bearing or non-full-complement cylinder roller bearing, can certainly adopt spheric roller bearing to replace described cylinder roller bearing 32 '.
In addition, for prevent bearing inner race or outer ring because of impact etc. former thereby cause with its separately mating parts relatively rotate, the solution that the utility model is taked is: by screw that the inner ring (group) of double-row conical bearing 31 ' is fastening with planet carrier 33 by little gland 39, thin cover 331, by screw that the outer ring group of double-row conical bearing 31 ' is mutually fastening by gland 37, transition rings 38, by screw that outer ring group and the rocking arm housing 1 of transition rings 38, gland 37, double-row conical bearing 31 ' is fastening; Stretch by the side 36 by screw that cylinder roller bearing 32 ' inner ring and planet carrier 33 is fastening, by screw that cylinder roller bearing 32 ' outer ring and rocking arm housing 1 is fastening by seal receptacle 35, bearing support 34.
Because the partition wall 21 of common rocking arm housing has certain thickness, the attenuate of partition wall 21 is that the setting of double-row conical bearing 31 ' provides certain axial space; Because the layout of double-row conical bearing 31 ', the bearing 21 of straight-tooth train 2 is arranged in the planet carrier 33.
The utility model is because the bearing arrangement characteristics, cylinder roller bearing 32 ' is short than rib side bearing among Fig. 1 32, thereby can effectively shorten the length (length A ' than length A short) of planetary mechanism 3, at identical cylinder deeply during long B, cylinder end face and body clearance are with regard to little (clearance C ' little than clearance C), so that the utility model rocking arm has better effect of loading coal; Cylinder roller bearing 32 ' is thick than rib side bearing 32, has larger supporting capacity, so that the utility model rocking arm has higher reliability.
In sum, the rocker arm of coal mining machine of the high reliability that the utility model proposes, rib side spring bearing adopts cylinder roller bearing, adopts sky side spring bearing and adopts double-row conical bearing, has solved the problem of planetary mechanism rib side spring bearing life-span deficiency; Effectively shorten again simultaneously the length of planetary mechanism, solved the Structure Designing Problem of girdle high-power coal cutter.
Here description of the present utility model and application is illustrative, is not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that in the situation that does not break away from spirit of the present utility model or substantive characteristics, and the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.In the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (4)
1. the rocker arm of coal mining machine of a high reliability is characterized in that, described rocking arm comprises housing, straight-tooth train, planetary mechanism, cylinder;
Described planetary mechanism comprises the first spring bearing of being arranged at the rib side, is arranged at the second spring bearing of adopting the sky side;
Described the first spring bearing adopts cylinder roller bearing or spheric roller bearing, bears the part radial load of planetary mechanism and does not bear axial force;
Described the second spring bearing adopts double-row conical bearing, bears the part radial load and whole axial forces of planetary mechanism; The second spring bearing bears the radial load of planetary mechanism is born planetary mechanism less than the first spring bearing radial load.
2. the rocker arm of coal mining machine of high reliability according to claim 1 is characterized in that:
Described the first spring bearing adopts full-complement cylinder roller bearing or non-full-complement cylinder roller bearing.
3. the rocker arm of coal mining machine of high reliability according to claim 1 is characterized in that:
Described housing comprises partition wall, shell hole; The straight-tooth train comprises the 3rd bearing; Planetary mechanism comprises that double-row conical bearing, cylinder roller bearing, planet carrier, bearing support, seal receptacle, side stretch, gland, transition rings, little gland;
Described planet carrier is stretched transmission of power to cylinder by the side; One end of planet carrier is connected with double-row conical bearing through thin cover, and double-row conical bearing is connected with the shell hole by transition rings, gland; The other end of planet carrier is connected with cylinder roller bearing, and cylinder roller bearing is connected with bearing support, and bearing support is connected to housing through ring gear by screw.
4. the rocker arm of coal mining machine of high reliability according to claim 3 is characterized in that:
By the first screw that inner ring group and the planet carrier of double-row conical bearing is fastening by little gland, thin cover, by the second screw that the outer ring group of double-row conical bearing is mutually fastening by gland, transition rings, by the 3rd screw that outer ring group and the rocking arm housing of transition rings, gland, double-row conical bearing is fastening; Stretch by the 4th screw by the side cylinder roller bearing inner ring and planet carrier is fastening, by the 5th screw that cylinder roller bearing outer ring and rocking arm housing is fastening by seal receptacle, bearing support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220518531 CN202900275U (en) | 2012-10-10 | 2012-10-10 | High reliability rocker arm of coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220518531 CN202900275U (en) | 2012-10-10 | 2012-10-10 | High reliability rocker arm of coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900275U true CN202900275U (en) | 2013-04-24 |
Family
ID=48120958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220518531 Expired - Fee Related CN202900275U (en) | 2012-10-10 | 2012-10-10 | High reliability rocker arm of coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900275U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343734A (en) * | 2017-01-02 | 2018-07-31 | 美闻达传动设备有限公司 | For planetary planetary gear carrier |
| CN109488294A (en) * | 2019-01-04 | 2019-03-19 | 天地科技股份有限公司上海分公司 | Mars Miner cutting mechanism with big slewing range |
-
2012
- 2012-10-10 CN CN 201220518531 patent/CN202900275U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343734A (en) * | 2017-01-02 | 2018-07-31 | 美闻达传动设备有限公司 | For planetary planetary gear carrier |
| CN109488294A (en) * | 2019-01-04 | 2019-03-19 | 天地科技股份有限公司上海分公司 | Mars Miner cutting mechanism with big slewing range |
| CN109488294B (en) * | 2019-01-04 | 2024-01-26 | 天地科技股份有限公司上海分公司 | Mining machine cutting mechanism with large speed change range |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10954784B2 (en) | Shearer cutting unit with double-speed rollers | |
| CN202360735U (en) | Planetary reduction gear | |
| CN202900275U (en) | High reliability rocker arm of coal mining machine | |
| CN207229586U (en) | A kind of orientable engineering bearing of self-lubricating | |
| CN103657773B (en) | A kind of roller bearing formula eccentric sleeve mechanism | |
| CN202106255U (en) | Roll grinder rotary jacking block | |
| CN103244117B (en) | Coal mining machine rocker arm with telescopic slotting mechanism | |
| CN201786262U (en) | Two-stage radial rubber seal roller bit | |
| CN203888910U (en) | Support chain wheel | |
| CN202900273U (en) | Coal cutter rocker arm with internal planet carrier connecting splines | |
| CN202851829U (en) | Double planet speed reducer of coal cutter tractive portion | |
| CN202545567U (en) | Full-complement cylindrical roller bearing with retainer | |
| CN202251846U (en) | Support structure of reducer output shaft | |
| CN201651051U (en) | Composite rolling bearing | |
| CN202326701U (en) | Self-positioning outer-teeth four-point contact ball type slewing bearing | |
| CN202969426U (en) | Connection mechanism for bucket rods and scraper bucket | |
| CN204223690U (en) | A kind of spiral slag extracting machine of structural development | |
| CN205534135U (en) | Poor planetary gear reducer's of few tooth that gradually bursts at seams inner support structure | |
| CN205315517U (en) | Bearing connection structure among speed change mechanism | |
| CN203868107U (en) | Full complement cylindrical roller idler wheel bearing of coal mining machine | |
| CN205315529U (en) | Constant speed drive shaft ball cage assembly that greasy property is good | |
| CN204533217U (en) | Automatic transmission case separated type radial bearing | |
| CN202451154U (en) | Coal cutter | |
| CN217002985U (en) | Speed reducer double-lubrication mechanism of coal mill powder concentrator | |
| CN204647045U (en) | Rzeppa universal joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20131010 |