CN87208770U - Expansion boom with suspension cable brace rod - Google Patents
Expansion boom with suspension cable brace rod Download PDFInfo
- Publication number
- CN87208770U CN87208770U CN 87208770 CN87208770U CN87208770U CN 87208770 U CN87208770 U CN 87208770U CN 87208770 CN87208770 CN 87208770 CN 87208770 U CN87208770 U CN 87208770U CN 87208770 U CN87208770 U CN 87208770U
- Authority
- CN
- China
- Prior art keywords
- strut
- suspension cable
- boom
- pulley
- arm
- 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.)
- Ceased
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- Jib Cranes (AREA)
Abstract
Disclosed is an expansion boom with the suspension cable brace rod. A plurality of mechanisms such as the suspension cable brace rod added on the boom and the stretching force function of the suspended cable during lifting work have the maximum internal force of the dangerous section of the boom reduced by above 20%, or the lifting performance of the boom is improved by above 20%.
Description
The utility model belongs to the parts of wheel type hydraulic hoisting crane.
The arm of wheel crane is broadly divided into two kinds of fundamental types at present.Both lattice girder posture and hydraulic telescopic type were two kinds.Its hydraulic telescopic type arm, cross-sectional plane mostly are box, weight is bigger, and when the lift heavy operation, structure is in the cantilever bending state, the internal force of plane of weakness is very big, distribution of stress is inhomogeneous, and the strength of material performance is not fully utilized, the lifting performance under the unit weight is lower, and is particularly lower down significantly.
For remedying the deficiency of above-mentioned arm, the utility model has increased mechanisms such as suspension cable strut on the basis that keeps hydraulic telescopic arm.Thereby improved the flexural loading state of telescopic boom.
According to design, the utility model comprises: telescopic boom, strut, suspension cable, strut oil cylinder, assembly pulley.
Provide most preferred embodiment of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1,3. strut is the broken line type latticed members, and 8. the top has one group of pulley.4. 9. 3. strut supported with the strut oil cylinder by hinge, is attached to telescopic boom fully and 2. forms geometrically stable system with telescopic boom on 2..Therefore strut can fall and moves with telescopic boom facing upward 2..Because strut adopts broken line type, when mode of operation is propped up, reach height as much as possible.Otherwise the complete machine height is low as far as possible in the time of also can making walking states.According to design, suspension cable is 7. shared with the steel clump rope that hoists.With steel rope with the strut assembly pulley 8., arm end assembly pulley 10., 1. the lifting hook pulley group be intertwined, thereby this steel rope is played hoist the combined action of lift heavy and suspension cable.Detour method as shown in Figure 2, steel rope is drawn by hoisting drum, via strut end pulley 1., order through arm end pulley and lifting hook pulley 2., 3., 4., 5., 6., 7., 8., to strut end pulley 9., then via pulley 10., (11), (12), (13), (14), at last steel cord ends is fixed in the arm end.
According to above-mentioned design, the utility model is owing to increased mechanism such as suspension cable strut, and the tension force effect of suspension cable when utilizing lift heavy work reduces more than 20% the maximum internal force of arm plane of weakness, can make the lifting performance of arm improve more than 20% in other words.
Claims (3)
1, a kind of arm extending type arm with the suspension cable strut, it comprise telescopic boom 2., strut 3., suspension cable 7., the strut oil cylinder 4., it is characterized in that 4. 9. 3. strut supported with the strut oil cylinder by hinge, be attached to telescopic boom 2. on, described suspension cable is 7. shared with raising line.
2, according to claim 1 with the telescopic hoist boom of suspension cable strut, it is characterized in that said strut 3., for 8. broken line type latticed members and top have one group of pulley.
3, according to claim 1 with the telescopic hoist boom of suspension cable strut, it is characterized in that said suspension cable is 7. shared with raising line, detour method as shown in Figure 2, steel rope is drawn by hoisting drum, via strut end pulley 1., order through arm end pulley and lifting hook pulley 2., 3., 4., 5., 6., 7., 8., to strut end pulley 9., then via pulley 10., (11), (12), (13), (14), at last steel cord ends is fixed in the arm end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208770 CN87208770U (en) | 1987-06-02 | 1987-06-02 | Expansion boom with suspension cable brace rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208770 CN87208770U (en) | 1987-06-02 | 1987-06-02 | Expansion boom with suspension cable brace rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87208770U true CN87208770U (en) | 1988-10-26 |
Family
ID=4823983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87208770 Ceased CN87208770U (en) | 1987-06-02 | 1987-06-02 | Expansion boom with suspension cable brace rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87208770U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345747C (en) * | 2003-04-08 | 2007-10-31 | 美国格若沃责任有限公司 | Tensioning system for a mobile telescopic crane |
| CN101618840B (en) * | 2008-06-30 | 2010-12-22 | 徐州重型机械有限公司 | Telescopic crane and superlift device thereof |
| CN101723260B (en) * | 2008-10-29 | 2012-01-18 | 徐州重型机械有限公司 | Superlift device for telescopic boom and telescopic boom type crane |
| CN110735454A (en) * | 2019-12-23 | 2020-01-31 | 龙口市全工工程机械制造厂 | Loading folding arm crane |
-
1987
- 1987-06-02 CN CN 87208770 patent/CN87208770U/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345747C (en) * | 2003-04-08 | 2007-10-31 | 美国格若沃责任有限公司 | Tensioning system for a mobile telescopic crane |
| CN101618840B (en) * | 2008-06-30 | 2010-12-22 | 徐州重型机械有限公司 | Telescopic crane and superlift device thereof |
| CN101723260B (en) * | 2008-10-29 | 2012-01-18 | 徐州重型机械有限公司 | Superlift device for telescopic boom and telescopic boom type crane |
| CN110735454A (en) * | 2019-12-23 | 2020-01-31 | 龙口市全工工程机械制造厂 | Loading folding arm crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |