CN201140971Y - Supporting leg structure for crane - Google Patents
Supporting leg structure for crane Download PDFInfo
- Publication number
- CN201140971Y CN201140971Y CNU2007200650344U CN200720065034U CN201140971Y CN 201140971 Y CN201140971 Y CN 201140971Y CN U2007200650344 U CNU2007200650344 U CN U2007200650344U CN 200720065034 U CN200720065034 U CN 200720065034U CN 201140971 Y CN201140971 Y CN 201140971Y
- Authority
- CN
- China
- Prior art keywords
- leg
- supporting leg
- supporting legs
- crane
- movable supporting
- 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
- 238000009434 installation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
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- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
Abstract
The utility model discloses a leg structure of a crane, which comprises a fixed leg (1) and a moveable leg (4), an upper base plate (2) is arranged on the front end at the inner side of an upper cover board of the fixed leg (1), a lower base plate (3) is disposed at the bottom part of the fixed leg (1), and the tail end of a bottom plate of the moveable leg (4) is just positioned on the lower base plate (3) when extending fully. The leg structure has advantages of reasonable structure and good force bearing, and can effectively solve the up-wrap leg problem of the leg structure of the crane, and the leg structure is applied to cranes of various tonnages with simple structure, convenient installation and good force bearing.
Description
Technical field
The utility model relates to a kind of leg structure, particularly relates to a kind of hoisting crane leg structure.
Background technology
Along with growing in intensity of car hosit market competition, also just more and more higher to the technical requirements of car hosit, the raising of crane loading ability just requires the corresponding increase of hoisting crane supporting leg span to satisfy the requirement of crane loading stability.Under car load width unmodified situation, it is shorter and shorter that the lap of splice of telescopic outrigger just becomes, stressed increasing, in this case, use conventional leg structure form, stretch entirely under the situation at supporting leg since assembly clearance and supporting leg stress deformation, movable supporting legs will be toward upwarping, from after see and just form " M " shape.Therefore, design a kind of new leg structure form, eliminate the problem that upwarps when the hoisting crane movable supporting legs is stretched operating mode entirely, improve the stress form of supporting leg, the service life of improving supporting leg, particularly important.
The utility model content
Technical problem to be solved in the utility model provides a kind of rational in infrastructure, and is stressed better, can effectively solve the hoisting crane leg structure that supporting leg upwarps.
In order to solve the problems of the technologies described above, the hoisting crane leg structure that the utility model provides, comprise fixed supporting leg and movable supporting legs, the inboard front end of described fixed supporting leg upper cover plate is provided with upper padding plate, be provided with lower bolster in described fixed supporting leg bottom, its base plate end just was positioned on the described lower bolster when described movable supporting legs was stretched entirely.
Adopt the hoisting crane leg structure of technique scheme, before and after the control fixed supporting leg cabinets cavity backing plate be the lower plane of upper padding plate of the inboard front end of upper cover plate to the level height size between the last plane of the lower bolster of fixed supporting leg central floor panel, require the height dimension little 1 ∽ 2mm of this height dimension than movable supporting legs.Version routinely, movable supporting legs can not be assembled in the fixed supporting leg like this.The utility model leg structure can be assembled to corresponding position in the fixed supporting leg to movable supporting legs.And solved the problem that upwarps when movable supporting legs is stretched entirely.In addition, this version has greatly improved for stressed the comparing also with original design of fixed supporting leg.
The utility model has solved following problem:
1. eliminate fixed supporting leg and movable supporting legs assembling gap afterwards.The level height size that goes up between lower bolster before and after the fixed supporting leg inner chamber of the present utility model is littler than the height dimension of movable supporting legs, has eliminated fixed supporting leg and movable supporting legs assembling gap afterwards.According to the amount of having a down dip of the deflection design activity supporting leg of supporting leg itself, movable supporting legs is stretched entirely can the maintenance level after stressed.
2. because the stressed back of movable supporting legs becomes horizontal, improved the supporting leg stressing conditions.
3. assembling easily.The movable supporting legs afterbody makes oblique type into by straight type, and the bevel altitude size in the fixed supporting leg casing between the backing plate of front and back is bigger than the height dimension of movable supporting legs. and movable supporting legs just can be packed in the fixed supporting leg casing sideling smoothly.
In sum, the utility model is a kind of rational in infrastructure, and is stressed better, can effectively solve the hoisting crane leg structure that supporting leg upwarps, and is applicable to the hoisting crane of various tonnages, and simple in structure, easy for installation, stressed good.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is a movable supporting legs structural representation of the present utility model;
Fig. 3 is the utility model assembling design sketch.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 and Fig. 2, respectively be provided with a upper padding plate 2 at the inboard front end the right and left of the upper cover plate of fixed supporting leg 1, also respectively there is a lower bolster 3 left and right sides on fixed supporting leg 1 bottom, and its base plate end just was positioned on the lower bolster 3 when movable supporting legs 4 was stretched entirely.
Referring to Fig. 1 and Fig. 2, height dimension between upper padding plate 2 and the lower bolster 3 is h1, the last height dimension of movable supporting legs 4 is h2, traditional design h2＜h1, but the utility model adds after upper padding plate 2 and the lower bolster 3, also can realize normal assembling under the situation of h2＞h1, and concrete size must be by calculating, h2=h1+ σ, the just assembling maximum activity supporting leg of fixed supporting leg size.Generally speaking, h2 is greater than h11 ∽ 2mm, i.e. σ=1 ∽ 2mm.
Referring to Fig. 3, adopt said method design-calculated fixed supporting leg to be: earlier vertical oil cylinder 5 to be assembled with movable supporting legs 4 with its installation method of movable supporting legs, with driving movable supporting legs 4 is lifted by crane with vertical oil cylinder 5 and movable supporting legs 4 to be inclined upwardly pack into 1 li of fixed supporting leg, like this in the process that movable supporting legs 4 stretches out, movable supporting legs 4 is downward-sloping all the time, after movable supporting legs 4 reaches the position, the afterbody lower end of movable supporting legs 4 just is positioned on the lower bolster 3, after vertical oil cylinder 5 reached the position, movable supporting legs became horizontality under the effect of crane and weight like this.
Claims (1)
- A kind of hoisting crane leg structure, comprise fixed supporting leg (1) and movable supporting legs (4), it is characterized in that: the inboard front end of described fixed supporting leg (1) upper cover plate is provided with upper padding plate (2), be provided with lower bolster (3) in described fixed supporting leg (1) bottom, described movable supporting legs (4) just is positioned on the described lower bolster (3) its base plate end when stretching entirely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200650344U CN201140971Y (en) | 2007-11-12 | 2007-11-12 | Supporting leg structure for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200650344U CN201140971Y (en) | 2007-11-12 | 2007-11-12 | Supporting leg structure for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201140971Y true CN201140971Y (en) | 2008-10-29 |
Family
ID=40068684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200650344U Expired - Fee Related CN201140971Y (en) | 2007-11-12 | 2007-11-12 | Supporting leg structure for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201140971Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670977B (en) * | 2009-09-30 | 2011-04-27 | 长沙中联重工科技发展股份有限公司 | Landing-lag gap adjusting device |
| CN102408062A (en) * | 2011-09-20 | 2012-04-11 | 徐州重型机械有限公司 | Supporting leg and applied crane thereof |
-
2007
- 2007-11-12 CN CNU2007200650344U patent/CN201140971Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670977B (en) * | 2009-09-30 | 2011-04-27 | 长沙中联重工科技发展股份有限公司 | Landing-lag gap adjusting device |
| CN102408062A (en) * | 2011-09-20 | 2012-04-11 | 徐州重型机械有限公司 | Supporting leg and applied crane thereof |
| CN102408062B (en) * | 2011-09-20 | 2014-07-16 | 徐州重型机械有限公司 | Supporting leg and applied crane thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOL Free format text: FORMER NAME: CHANG SHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 410007 Hunan province Changsha Furong Road three No. 613 Puyuan branch Patentee after: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Address before: 410007 Hunan province Changsha Furong Road three No. 613 Puyuan branch Patentee before: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20151112 |
|
| EXPY | Termination of patent right or utility model |