CN204689472U - A kind of crane arm - Google Patents
A kind of crane arm Download PDFInfo
- Publication number
- CN204689472U CN204689472U CN201520445533.0U CN201520445533U CN204689472U CN 204689472 U CN204689472 U CN 204689472U CN 201520445533 U CN201520445533 U CN 201520445533U CN 204689472 U CN204689472 U CN 204689472U
- Authority
- CN
- China
- Prior art keywords
- arm
- telescoping boom
- main arm
- slideway
- roller
- 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 discloses a kind of crane arm, comprise main arm and telescoping boom, described telescoping boom is positioned at described main arm, inside described main arm, upper and lower two sides are fixedly installed some elastic components, each described elastic component other end is provided with roller, described telescoping boom arranged outside has slideway, and described roller is positioned at described slideway.This crane arm is arranged in slideway by roller and ensures that telescoping boom is flexible stable, also can stable operation when ensureing that between main arm and telescoping boom, spacing changes by arranging elastic component, make work more stable, be converted to friction of rolling by the cliding friction of general arm, service life extends.
Description
Technical field
The utility model belongs to hoisting crane technical field, specifically a kind of crane arm.
Background technology
Hoisting crane is the machine that building field is conventional, traditional crane arm comprises main arm and telescoping boom, telescoping boom can realize flexible in main arm by hydraulic cylinder extension, in order to reduce friction between main arm and telescoping boom, generally there is nylon block in the arranged outside of telescoping boom, the wearing and tearing between arm are reduced by the friction inside nylon block and main arm, the steel bar that general arm is all arch by two pieces of cross sections is welded, therefore deformation occur in welding process often causes arm to bend distortion, thus make the working accuracy of arm very low, the interior outside of arm all can be uneven.Now in order to make telescoping boom to stretch in main arm normally, the thickness of nylon block must be reduced, nylon block can just can by the minimum place of main arm inside, and can upwarp at the telescoping boom of main arm inside after the weight that dangles on telescoping boom, make the nylon block of the most inner top side of telescoping boom being close to main arm upper inner face inflexibly all the time, and all the other nylon blocks contact with the medial surface of main arm hardly, thus the wearing and tearing of that block nylon block are very fast, life-span falls sharply, and make the noise when telescoping boom stretches very large because main arm is inner uneven.
Summary of the invention
The utility model is not enough for prior art, and provide a kind of crane arm, this crane arm processing request is low, long service life.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of crane arm, comprise main arm and telescoping boom, described telescoping boom is positioned at described main arm, inside described main arm, upper and lower two sides are fixedly installed some elastic components, each described elastic component other end is provided with roller, and described telescoping boom arranged outside has slideway, and described roller is positioned at described slideway.This crane arm is arranged in slideway by roller and ensures that telescoping boom is flexible stable, also can stable operation when ensureing that between main arm and telescoping boom, spacing changes by arranging elastic component, make work more stable, be converted to friction of rolling by the cliding friction of general arm, service life extends.
In technique scheme, preferably, the some described elastic component on the upside of described main arm is shortened to the back-end gradually by front end, and the some described elastic component on the downside of described main arm is elongated gradually to the back-end by front end.Because arm front end can hang weight, telescoping boom front end can relatively main arm downward-sloping, be therefore arranged to this structure and roller better coordinated with slideway.
The utility model compared with prior art, there is following beneficial effect: this crane arm is arranged in slideway by roller and ensures that telescoping boom is flexible stable, also can stable operation when ensureing that between main arm and telescoping boom, spacing changes by arranging elastic component, make work more stable, be converted to friction of rolling by the cliding friction of general arm, service life extends.
Accompanying drawing explanation
Fig. 1 is the side cross sectional views of the utility model embodiment.
Fig. 2 is the cross section structure schematic diagram of the utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described in further detail: see Fig. 1 to Fig. 2, a kind of crane arm, comprise main arm 1 and telescoping boom 2, described telescoping boom 2 is positioned at described main arm 1, inside described main arm 1, upper and lower two sides are fixedly installed some elastic components 3, each described elastic component 3 other end is provided with roller 4, and described telescoping boom 2 arranged outside has slideway 21, and described roller 4 is positioned at described slideway 21.This crane arm is arranged in slideway by roller and ensures that telescoping boom is flexible stable, also can stable operation when ensureing that between main arm and telescoping boom, spacing changes by arranging elastic component, make work more stable, be converted to friction of rolling by the cliding friction of general arm, service life extends.
Some described elastic component 3 on the upside of described main arm 1 is shortened to the back-end gradually by front end, and the some described elastic component 3 on the downside of described main arm 1 is elongated gradually to the back-end by front end.Because arm front end can hang weight, telescoping boom front end can relatively main arm downward-sloping, be therefore arranged to this structure and roller better coordinated with slideway.
Claims (2)
1. a crane arm, comprise main arm (1) and telescoping boom (2), described telescoping boom (2) is positioned at described main arm (1), it is characterized in that: upper and lower two sides are fixedly installed some elastic components (3) in described main arm (1) inner side, each described elastic component (3) other end is provided with roller (4), described telescoping boom (2) arranged outside has slideway (21), and described roller (4) is positioned at described slideway (21).
2. a kind of crane arm as claimed in claim 1, it is characterized in that: the some described elastic component (3) of described main arm (1) upside is shortened to the back-end gradually by front end, the some described elastic component (3) of described main arm (1) downside is elongated gradually to the back-end by front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520445533.0U CN204689472U (en) | 2015-06-26 | 2015-06-26 | A kind of crane arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520445533.0U CN204689472U (en) | 2015-06-26 | 2015-06-26 | A kind of crane arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204689472U true CN204689472U (en) | 2015-10-07 |
Family
ID=54229787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520445533.0U Expired - Fee Related CN204689472U (en) | 2015-06-26 | 2015-06-26 | A kind of crane arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204689472U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109250653A (en) * | 2018-09-10 | 2019-01-22 | 广东东源新地股份有限公司 | A kind of logistics transportation easing gear and its application method |
-
2015
- 2015-06-26 CN CN201520445533.0U patent/CN204689472U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109250653A (en) * | 2018-09-10 | 2019-01-22 | 广东东源新地股份有限公司 | A kind of logistics transportation easing gear and its application method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160626 |