CN101793039B - Rotary device of hydraulic excavator for mine - Google Patents
Rotary device of hydraulic excavator for mine Download PDFInfo
- Publication number
- CN101793039B CN101793039B CN2009102639108A CN200910263910A CN101793039B CN 101793039 B CN101793039 B CN 101793039B CN 2009102639108 A CN2009102639108 A CN 2009102639108A CN 200910263910 A CN200910263910 A CN 200910263910A CN 101793039 B CN101793039 B CN 101793039B
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- Prior art keywords
- pivoting support
- rotary
- inner ring
- mine
- hydraulic excavator
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Abstract
The invention discloses a rotary device of a hydraulic excavator for mine, which relates to a transmission mechanism of a hydraulic excavator for mine and solves the problems that the rotary pinion shaft has large deflection, poor rigidity and short service life in the prior art. The rotary device comprises a rotary platform 2, a rotary support 4 and a rotary decelerator 5, wherein an outer ring 4-1 of the rotary support 4 is connected with the rotary platform 2 through a bolt 1 and an anti-loosening sleeve 8; and an inner ring 4-2 of the rotary support 4 is connected with a chassis 3. The rotary device is characterized in that the connection between the inner ring 4-2 of the rotary support 4 and the chassis 3 is threaded connection realized by machining a threaded hole on the inner ring 4-2 of the rotary support 4 and making the bolt 1 pass through the anti-loosening sleeve 8, a through hole of the chassis 3 and the inner ring 4-2 of the rotary support 4.
Description
Technical field
The present invention relates to mine excavator, particularly a kind of transmission mechanism of hydraulic excavator for mine.
Background technology
The slewing equipment of hydraulic excavator for mine is the important transmission mechanism of complete machine.The slewing equipment of prior art mainly is made up of internal-gear type pivoting support 4, rotary reducer 5, bolt 1, revolving dial 2, nut 6, packing ring 7, loose-proof sleeve 8 and revolution pinion shaft 9.The outer ring 4-1 of pivoting support 4 connects through bolt 1 and loose-proof sleeve 8 with revolving dial 2; The inner ring 4-2 of pivoting support 4 is through passing through bolt 1, loose-proof sleeve 8, nut 6, packing ring 7, connecting with underframe 3.Packing ring 6 and nut 7 are installed in the centre of the inner ring 4-2 and the revolving dial 2 of pivoting support 4.The operating principle of the slewing equipment of hydraulic excavator for mine is: the inner ring 4-2 of pivoting support 4 connects through bolt 1 with underframe 3 and fixes with the chassis of hydraulic excavator for mine; The internal tooth engagement of the pinion of revolution pinion shaft 9 and pivoting support 4; During the hydraulic crawler excavator revolution, the outer ring 4-1 and the revolving dial 2 of rotary reducer 5, revolution pinion shaft 9, pivoting support 4 turn round together.
The slewing equipment of the hydraulic excavator for mine of prior art; The inner ring 4-2 of its pivoting support 4 and the connecting hole of underframe 3 are unthreaded hole; Will pass through bolt, nut, packing ring and loose-proof sleeve connects; Because the inner ring 4-2 of pivoting support 4 and the coupling nut 6 of underframe 3 are mounted between pivoting support and the revolving dial lower cover, therefore, cause the length of revolution pinion shaft 9 longer.Revolution pinion shaft 9 is a cantilever construction, and long cantilevered axle causes amount of deflection big, poor rigidity, and the life-span is low.
Summary of the invention
The object of the invention is intended to overcome the shortcoming of prior art, and a kind of slewing equipment of hydraulic excavator for mine is provided, and it is big to solve prior art revolution pinion shaft amount of deflection, poor rigidity, the problem that the life-span is low.
The present invention is achieved in that
A kind of slewing equipment of hydraulic excavator for mine comprises: revolving dial, pivoting support and rotary reducer, and the outer ring of pivoting support connects through bolt and loose-proof sleeve with revolving dial; The inner ring of pivoting support connects with underframe, it is characterized in that: the inner ring of said pivoting support is a thread mill drilling on the inner ring of pivoting support with connecting of underframe, passes the thread connection of the through hole and the pivoting support inner ring of loose-proof sleeve and underframe with bolt.
The present invention compared with prior art; Owing on the inner ring of pivoting support, processed screwed hole; Replaced the connecting mode of the inner ring of pivoting support through bolt, loose-proof sleeve, packing ring, nut and underframe with thread connection; Reduce the length of revolution pinion shaft, shortened the height of pivoting support.Like this, not only reduced the amount of deflection of revolution pinion shaft, improved rigidity, gear meshing precision and reliability are improved, increased the life-span of revolution pinion shaft, and had advantages such as reasonable in design, easy for installation, practical.Simultaneously,, saved material, reduced cost owing to reduced the height of revolution pinion shaft and pivoting support.
Description of drawings
Fig. 1 is the hydraulic excavator for mine slew gear assembling sketch map of prior art;
Fig. 2 is the sectional view of the pivoting support of prior art;
Fig. 3 is the sketch map of the rotary reducer of prior art;
Fig. 4 is a structural representation of the present invention;
Fig. 5 is the sectional view of pivoting support of the present invention;
Fig. 6 is the sketch map of rotary reducer of the present invention.
Specify the present invention below in conjunction with accompanying drawing through preferred embodiment.
The specific embodiment
Like Fig. 4,5, shown in 6, a kind of slewing equipment of hydraulic excavator for mine comprises: revolving dial 2, pivoting support 4 and rotary reducer 5, and the outer ring 4-1 of pivoting support 4 connects through bolt 1 and loose-proof sleeve 8 with revolving dial 2; The inner ring 4-2 of pivoting support 4 is a thread mill drilling on the inner ring 4-2 of pivoting support 4 with connecting of underframe 3, passes the thread connection of the through hole and the pivoting support 4 inner ring 4-2 of loose-proof sleeve 8 and underframe 3 with bolt 1.
On the inner ring of pivoting support 4, processed screwed hole; Replaced the unthreaded hole and the nut 7 of pivoting support inner ring with screwed hole, saved assembly space, so can reduce to turn round the length of pinion shaft; Thereby reduced the amount of deflection of revolution pinion shaft, shortened the height of pivoting support.Like this, under the situation of amount of deflection that does not change pinion shaft and assurance transfer torque, can dwindle the diameter of revolution pinion shaft, reduce the appearance and size of rotary reducer; Under the situation of the diameter that does not change pinion shaft, can improve gear meshing precision and reliability, improve the life-span of revolution pinion shaft.
Claims (1)
1. the slewing equipment of a hydraulic excavator for mine comprises: revolving dial (2), pivoting support (4) and rotary reducer (5), and the outer ring (4-1) of pivoting support (4) connects through bolt (1) and loose-proof sleeve (8) with revolving dial (2); The inner ring (4-2) of pivoting support (4) connects with underframe (3); It is characterized in that: the inner ring (4-2) of said pivoting support (4) is to go up thread mill drilling, the thread connection of passing the through hole and pivoting support (4) inner ring (4-2) of loose-proof sleeve (8) and underframe (3) with bolt (1) at the inner ring (4-2) of pivoting support (4) with connecting of underframe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102639108A CN101793039B (en) | 2009-12-22 | 2009-12-22 | Rotary device of hydraulic excavator for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102639108A CN101793039B (en) | 2009-12-22 | 2009-12-22 | Rotary device of hydraulic excavator for mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101793039A CN101793039A (en) | 2010-08-04 |
| CN101793039B true CN101793039B (en) | 2012-02-29 |
Family
ID=42585937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102639108A Expired - Fee Related CN101793039B (en) | 2009-12-22 | 2009-12-22 | Rotary device of hydraulic excavator for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101793039B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031797B (en) * | 2010-12-22 | 2012-01-11 | 辽宁鑫丰矿电设备制造有限公司 | Mining hydraulic excavator |
| CN102839706B (en) * | 2012-09-27 | 2014-07-16 | 太原重工股份有限公司 | Platform on upper part of large mine hydraulic excavator |
| CN110593346A (en) * | 2019-09-20 | 2019-12-20 | 三一重机有限公司 | Digging machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2537740Y (en) * | 2002-04-09 | 2003-02-26 | 罗群雄 | Steering gear for digging machine shovel |
| CN1741932A (en) * | 2003-09-10 | 2006-03-01 | 日立建机株式会社 | Construction machine |
| JP2006205922A (en) * | 2005-01-28 | 2006-08-10 | Hitachi Constr Mach Co Ltd | Vehicle mounting type working machine |
| CN201003183Y (en) * | 2006-12-12 | 2008-01-09 | 广西柳工机械股份有限公司 | Hydraulic digger pedal angle regulation device |
-
2009
- 2009-12-22 CN CN2009102639108A patent/CN101793039B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2537740Y (en) * | 2002-04-09 | 2003-02-26 | 罗群雄 | Steering gear for digging machine shovel |
| CN1741932A (en) * | 2003-09-10 | 2006-03-01 | 日立建机株式会社 | Construction machine |
| JP2006205922A (en) * | 2005-01-28 | 2006-08-10 | Hitachi Constr Mach Co Ltd | Vehicle mounting type working machine |
| CN201003183Y (en) * | 2006-12-12 | 2008-01-09 | 广西柳工机械股份有限公司 | Hydraulic digger pedal angle regulation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101793039A (en) | 2010-08-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20211222 |