CN202429925U - Tower crane - Google Patents
Tower crane Download PDFInfo
- Publication number
- CN202429925U CN202429925U CN2011204653827U CN201120465382U CN202429925U CN 202429925 U CN202429925 U CN 202429925U CN 2011204653827 U CN2011204653827 U CN 2011204653827U CN 201120465382 U CN201120465382 U CN 201120465382U CN 202429925 U CN202429925 U CN 202429925U
- Authority
- CN
- China
- Prior art keywords
- tower crane
- wind shield
- air baffle
- web member
- shaped bolt
- 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 tower crane. The tower crane is characterized in that a wind shield (1) is fixedly arranged on a web member (6) in a jib boom (2) by a U-shaped bolt connector pair (5); and a steel framework (4) is arranged below the wind shield (1). The windward area of the jib boom (2) of the wind shield (1) is greater than that of a balance arm (3); and a drill hole is formed in the wind shield (1) at each web member (6) and is connected with the jib boom (2). The U-shaped bolt connector pair (5) is formed by connecting a U-shaped bolt (7), a nut (8), a spring washer (9) and a flat gasket (10); and the U-shaped bolt (7) and the flat gasket (10) are mutually matched with the drill holes in the wind shield (1). The tower crane disclosed by the utility model has the beneficial effects of simple structure and easiness in manufacture; and when wind speed is higher, the possibilities that overrunning collapse of the tower crane and the breaking-off of the jib boom occur are reduced.
Description
Technical field
The utility model relates to a kind of tower crane.
Background technology
Consider to receive the wind-force factor affecting, tower crane requires the equilibrium arm wind area should be not less than the crane arm wind area when design.But according to its actual conditions, the crane arm installation length may be less than design length during owing to installation, and its wind area also reduces immediately.When the tower crane that shortens boom length is installed, when it received windage, crane arm can not be rocked to downwind with the wind, caused whole tower crane topside wind area to increase, and windage increases; Crane arm also receives windage.When wind speed is big, very easily causes tower crane and topple and collapse and safety misadventures such as crane arm fractures.
The utility model content
The purpose of the utility model provides a kind of tower crane.
The utility model is that the technical scheme that its technical matters of solution is taked is:
A kind of tower crane is characterized in that: the U-bolt auxiliary connection is fixed on air baffle on the web member in the crane arm.
Steel frame is laid in described air baffle below.
The wind area of the crane arm of described air baffle is greater than the equilibrium arm wind area, every web member place, and the air baffle drilling links to each other with crane arm.
Described U-bolt auxiliary connection is connected into by U-bolt, nut, bullet packing ring, flat shim, and boring is mated each other on U-bolt, flat shim and the air baffle.
The beneficial effect of the utility model is: simple in structure, be easy to make, and when wind speed is big, is difficult for causing tower crane and topples and collapse and crane arm fractures.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified:
Fig. 1 is the constructional drawing of the utility model;
Fig. 2 is the reinforcement steel frame scheme drawing of the utility model;
Fig. 3 is that the air baffle of the utility model is connected scheme drawing with web member;
Fig. 4 is the U-bolt auxiliary connection scheme drawing of the utility model.
Among the figure: 1. air baffle, 2. crane arm, 3. equilibrium arm, 4. steel frame, 5.U type bolted connection is secondary, 6. web member, 7.U type bolt, 8. nut 9. plays packing ring, 10. flat shim.
The specific embodiment
A kind of tower crane is characterized in that: U-bolt auxiliary connection 5 is fixed on air baffle 1 on the web member 6 in the crane arm 2.
The wind area of the crane arm 2 of described air baffle 1 is greater than equilibrium arm 3 wind areas, every web member 6 places, and air baffle 1 drilling links to each other with crane arm 2.
Described U-bolt auxiliary connection 5 is connected into by U-bolt 7, nut 8, bullet packing ring 9, flat shim 10, and boring is mated each other on U-bolt 7, flat shim 10 and the air baffle 1.
Claims (4)
1. tower crane, it is characterized in that: U-bolt auxiliary connection (5) is fixed on air baffle (1) on the web member (6) in the crane arm (2).
2. tower crane according to claim 1 is characterized in that: steel frame (4) is laid in described air baffle (1) below.
3. tower crane according to claim 1 and 2; It is characterized in that: the wind area of the crane arm (2) of described air baffle (1) is greater than equilibrium arm (3) wind area; Every web member (6) is located, and air baffle (1) drilling links to each other with crane arm (2).
4. tower crane according to claim 1; It is characterized in that: described U-bolt auxiliary connection (5) is connected into by U-bolt (7), nut (8), bullet packing ring (9), flat shim (10), and U-bolt (7), flat shim (10) are gone up boring with air baffle (1) and mated each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204653827U CN202429925U (en) | 2011-11-22 | 2011-11-22 | Tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204653827U CN202429925U (en) | 2011-11-22 | 2011-11-22 | Tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202429925U true CN202429925U (en) | 2012-09-12 |
Family
ID=46779391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204653827U Expired - Fee Related CN202429925U (en) | 2011-11-22 | 2011-11-22 | Tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202429925U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3064465A1 (en) * | 2015-03-04 | 2016-09-07 | Gru Comedil s.r.l. | Jib device for a crane comprising a sail unit, crane and method for operating the crane |
| CN115959584A (en) * | 2023-02-28 | 2023-04-14 | 徐州建机工程机械有限公司 | Inverted triangle jib loading boom sail structure |
-
2011
- 2011-11-22 CN CN2011204653827U patent/CN202429925U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3064465A1 (en) * | 2015-03-04 | 2016-09-07 | Gru Comedil s.r.l. | Jib device for a crane comprising a sail unit, crane and method for operating the crane |
| CN115959584A (en) * | 2023-02-28 | 2023-04-14 | 徐州建机工程机械有限公司 | Inverted triangle jib loading boom sail structure |
| CN115959584B (en) * | 2023-02-28 | 2023-11-10 | 徐州建机工程机械有限公司 | Inverted triangle crane boom sail structure |
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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: 20120912 Termination date: 20141122 |
|
| EXPY | Termination of patent right or utility model |