CN204344673U - A kind of excavator pivoting support - Google Patents
A kind of excavator pivoting support Download PDFInfo
- Publication number
- CN204344673U CN204344673U CN201420736666.9U CN201420736666U CN204344673U CN 204344673 U CN204344673 U CN 204344673U CN 201420736666 U CN201420736666 U CN 201420736666U CN 204344673 U CN204344673 U CN 204344673U
- Authority
- CN
- China
- Prior art keywords
- steel ball
- spacing block
- pivoting support
- seepage hole
- oil seepage
- 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
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Abstract
The utility model relates to a kind of excavator pivoting support, and this pivoting support comprises inner ring and outer ring, and wherein, outer ring sleeve, outside inner ring, is provided with rolling element between outer ring and inner ring; It is characterized in that: described rolling element comprises steel ball, spacing block and lubricating grease, steel ball and spacing block consecutive intervals arrange, and lubricating grease is between steel ball and spacing block; The left and right sides of each spacing block is provided with the groove of spherical shape, and two, left and right groove is communicated with by oil seepage hole, and oil seepage hole is positioned at the relative place of left and right groove top, wherein: the radius size A of two grooves in left and right meets mathematical expression: A=SR; The radius size B of oil seepage hole meets mathematical expression: 1.5mm≤B≤4mm; Wherein, SR is the radius of steel ball, and unit is mm.After adopting such structure, the long service life of this pivoting support, simultaneously smooth running, flexibly.
Description
Technical field
The utility model relates to pivoting support field, is specifically related to a kind of excavator pivoting support.
Background technique
Pivoting support is applied very extensive in modern industry, and being called as in " joint of machine ", is need between two articles to do relative rotation motion, needs again the necessary important transmission part of machinery bearing axial force, radial force, tilting moment simultaneously.Along with developing rapidly of machinery industry, pivoting support is widely used in industries such as ship equipment, engineering machinery, light industry and machinery, metallurgical machinery, medical machinery, industrial machineries.
As steel ball and the spacing block of pivoting support product " heart " part, its cooperate degree supporting isolation each other determines behaviour in service and the working life of pivoting support product.In prior art, between the surface of contact of spacing block and steel ball, spacing block part is provided with 4 oil seepage holes, provides feed channel fast as the lubricating grease of demand between adjacent steel ball.Due to pivoting support forward in actual use and antiport, cause rolling element (steel ball+spacing block) not evenly can arrange under desirable gap condition.In rolling element (steel ball+spacing block) arrangement region comparatively closely, the bad situation be engaged is there is in spacing block oil seepage hole by with steel ball, the surface friction drag between steel ball and spacing block is made to become large, even there is the clamping stagnation situation of steel ball and spacing block, thus cause that the running of pivoting support is unstable and working life is low.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of excavator pivoting support, the long service life of this pivoting support, simultaneously smooth running, flexibly.
For solving the problems of the technologies described above, a kind of excavator pivoting support that the utility model provides, this pivoting support comprises inner ring, Stamping Steel Ribbon, oil nozzle and outer ring, and wherein, outer ring sleeve, outside inner ring, is provided with rolling element between outer ring and inner ring; It is characterized in that: described rolling element comprises steel ball, spacing block and lubricating grease, steel ball and spacing block consecutive intervals arrange, and lubricating grease is between steel ball and spacing block; The left and right sides of each spacing block is provided with the groove of spherical shape, and two, left and right groove is communicated with by oil seepage hole, and oil seepage hole is positioned at the relative place of left and right groove top, wherein:
The radius size A of two grooves in left and right meets mathematical expression: A=SR; The radius size B of oil seepage hole meets mathematical expression: 1.5mm≤B≤4mm;
Wherein, SR is the radius of steel ball, and unit is mm.
The radius size B of described oil seepage hole increases along with the increase of steel ball radius SR.
After adopting such structure, because the radius size of two grooves in left and right is equal with the radius of steel ball, then, under comparatively tight situation arranged by steel ball and spacing block, also there will not be spacing block to the occlusion condition of steel ball; Simultaneously, the oil seepage hole of spacing block keeps clear, and between adjacent steel ball, the lubricating grease of demand obtains supply fast, and the friction for steel ball and inside and outside circle provides lubricates guarantee reliably, make pivoting support operating mode in operation process steady, and improve the working life of pivoting support.
Accompanying drawing explanation
Fig. 1 is the plan view of spacing block in prior art.
Fig. 2 is the sectional view of spacing block in prior art.
Fig. 3 is the structural representation of the utility model excavator pivoting support.
Fig. 4 is the structural representation of the rolling element of the utility model pivoting support.
Fig. 5 is the structural representation of the spacing block of the utility model pivoting support.
Embodiment
In order to better understand the improvement that the utility model is made relative to prior art, before embodiment of the present utility model is described in detail, first the prior art mentioned in background technique is described with reference to the accompanying drawings.
Fig. 1 and Fig. 2 shows the main structure of spacing block in prior art.Spacing block 9 is provided with 4 oil seepage holes 14, is that the lubricating grease 10 of adjacent steel ball 11 demands provides feed channel fast.Due to pivoting support forward in actual use and antiport, cause rolling element 8 (steel ball 11 and spacing block 9) not evenly can arrange under desirable gap condition.In rolling element 8 (steel ball 11 and spacing block 9) arrangement region comparatively closely, the bad situation be engaged is there is in oil seepage hole 14 by with steel ball 11, the surface friction drag between steel ball 11 and spacing block 9 is made to become large, even there is the clamping stagnation situation of steel ball 11 and spacing block 9, thus cause that the running of pivoting support is unstable and working life is low.
A kind of digger revolving supporting as shown in Figure 3, composition graphs 4 and Fig. 5, this pivoting support comprises inner ring 7 and outer ring 2, outer ring 2 is enclosed within outside inner ring 7, ring raceway 5 is included between the fitting surface of outer ring 2 and inner ring 7, rolling element 8 is distributed with in ring raceway 5, the annular groove 3 be positioned at outside ring raceway 5 is also included between the fitting surface of outer ring 2 and inner ring 7, the ring-shaped rubber Stamping Steel Ribbon 4 matched is provided with in annular groove 3, the outside of outer ring 2 includes the oil nozzle 1 with pipeline, the inwall of inner ring 7 is provided with gear ring 6, it is domatic that the upper and lower end face of gear ring 6 is respectively provided with a circular slanting, the lower end surface of inner ring 7 upper-end surface and outer ring 2 is respectively provided with a step.Rolling element 8 comprises steel ball 11, spacing block 9 and lubricating grease 10, and steel ball 11 and spacing block 9 consecutive intervals arrange, and lubricating grease 10 is between steel ball 11 and spacing block 9; The left and right sides of each spacing block 9 is provided with the groove of spherical shape, groove is made up of two-part, be respectively outer groove 12 and inner groovy 13, outer groove 12 is concentric with inner groovy 13, two grooves 12,13 in left and right are communicated with by oil seepage hole 14, and oil seepage hole 14 is positioned at left and right groove 12, the place that 13 tops are relative, wherein:
The radius size A of two grooves 12,13 in left and right meets mathematical expression: A=SR; The radius size B of oil seepage hole 14 meets mathematical expression: 1.5mm≤B≤4mm; Wherein, SR is the radius of steel ball 11, and unit is mm.
In the utility model, the radius size B of described oil seepage hole 14 increases along with the increase of steel ball 11 radius SR.
The beneficial effects of the utility model are: because the radius size of two, left and right groove 12,13 is equal with the radius of steel ball 11, then, under steel ball 11 and spacing block 9 arrange comparatively tight situation, also there will not be the occlusion condition of spacing block 9 pairs of steel balls 11; Simultaneously, the oil seepage hole 14 of spacing block 9 keeps clear, the lubricating grease 10 of adjacent steel ball 11 demands obtains supply fast, for steel ball 11 and inside and outside circle 7, the friction of 2 provides lubricates guarantee reliably, make pivoting support operating mode in operation process steady, and improve the working life of pivoting support.
Above the utility model and mode of execution thereof are described, but the utility model is not limited to above-mentioned mode of execution, in the ken that one skilled in the relevant art possesses, can also make a variety of changes when not departing from the utility model and creating aim.
Claims (2)
1. an excavator pivoting support, this pivoting support comprises inner ring, Stamping Steel Ribbon, oil nozzle and outer ring, and wherein, outer ring sleeve, outside inner ring, is provided with rolling element between outer ring and inner ring; It is characterized in that: described rolling element comprises steel ball, spacing block and lubricating grease, steel ball and spacing block consecutive intervals arrange, and lubricating grease is between steel ball and spacing block; The left and right sides of each spacing block is provided with the groove of spherical shape, and two, left and right groove is communicated with by oil seepage hole, and oil seepage hole is positioned at the relative place of left and right groove top, wherein:
The radius size A of two grooves in left and right meets mathematical expression: A=SR; The radius size B of oil seepage hole meets mathematical expression: 1.5mm≤B≤4mm;
Wherein, SR is the radius of steel ball, and unit is mm.
2. a kind of excavator pivoting support according to claim 1, is characterized in that: the radius size B of described oil seepage hole increases along with the increase of steel ball radius SR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736666.9U CN204344673U (en) | 2014-11-28 | 2014-11-28 | A kind of excavator pivoting support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736666.9U CN204344673U (en) | 2014-11-28 | 2014-11-28 | A kind of excavator pivoting support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204344673U true CN204344673U (en) | 2015-05-20 |
Family
ID=53227944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420736666.9U Expired - Fee Related CN204344673U (en) | 2014-11-28 | 2014-11-28 | A kind of excavator pivoting support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204344673U (en) |
-
2014
- 2014-11-28 CN CN201420736666.9U patent/CN204344673U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20161128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |