CN2467488Y - Tension bar stress balancing apparatus for tower crane - Google Patents
Tension bar stress balancing apparatus for tower crane Download PDFInfo
- Publication number
- CN2467488Y CN2467488Y CN 01236168 CN01236168U CN2467488Y CN 2467488 Y CN2467488 Y CN 2467488Y CN 01236168 CN01236168 CN 01236168 CN 01236168 U CN01236168 U CN 01236168U CN 2467488 Y CN2467488 Y CN 2467488Y
- Authority
- CN
- China
- Prior art keywords
- tower crane
- bearing pin
- pull bar
- tension bar
- equalizing lever
- 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
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- Jib Cranes (AREA)
Abstract
The utility model relates to a tension bar stress balancing apparatus for a tower crane, which is a connecting device of a tower crane tension bar and tower crane top, and a short tension bar is connected with the top of the tower crane through a pin shaft. The utility model is characterized in that both ends of a short tension bar are welded with an ear plate with a pin shaft hole, the upper end of the ear plate is connected with the tower crane top, and the lower end of the ear plate is connected with a balancing lever, wherein, both ends of which are connected with the tower crane tension bar through the pin shaft. A pulley wheel for installation is connected with one end of the balancing lever through a short draw plate and the pin shaft. The utility model has the advantages of simple structure, reasonable structure, material saving and low cost. Simultaneously, the maximum tension of the tension bar of the tower crane is reduced, and the stress condition of a tension bar system is improved.
Description
The utility model relates to the connecting device of a kind of tower crane pull bar and cat head.Specifically, use this device after, can make the pulling force that is born between the tower crane pull bar, all the time uniform distribution.
In order to satisfy the building operation needs, tower crane has all strengthened the length of elevator boom rack, and outstanding the drawing of elevator boom rack generally all adopted two pull bars or three pull bars.So just make the elevator boom rack system form the statically indeterminate beam of three fulcrums or four fulcrums, in the carriage amplitude varying process, the tension variations of pull bar is very big, and the branch polarity of load is inhomogeneous between pull bar.And the selection in pull bar cross section is by the decision of the maxim of pulling force.
The purpose of this utility model is to overcome the shortcoming in the above-mentioned technology, proposes a kind of balancing device that can make the tension uniform distribution of hoisting crane pull bar, is installed in the junction of hoisting crane pull bar upper end and cat head.This device has been simplified the structure of hoisting crane tie system, makes it to become statically determinate system.Therefore can guarantee the Drawbar Pull uniform distribution of hoisting crane, the maximum pull of pull bar reduces significantly when making tower crane amplitude variation.
The utility model is realized by following technical scheme: two ends are welded with the short rod (or arm-tie) of otic placode, and the upper end otic placode is connected the top of tower crane by bearing pin, and the lower end otic placode is connected with equalizing lever by bearing pin.The equalizing lever two ends link to each other with the hoisting crane pull bar with bearing pin.One end of equalizing lever is connected the pulley that the lifting pull bar uses constantly with little arm-tie with bearing pin.When hoisting crane has three pull bars, end at equalizing lever connects a lower pulling plate by bearing pin, the lower pulling plate lower end connects little equalizing lever, the other end of little equalizing lever two ends and equalizing lever is connected with three pull bars of crane arm respectively with bearing pin, the pulley that the lifting pull bar is used is connected with compensating bar one end by short arm-tie and bearing pin.
The utility model has the advantages that: simple and reasonable for structure, saving in material, reduction cost, make the pull bar Force Calculation simple simultaneously, improved the force-bearing situation of tie system, reduced the maximum pull of pull bar.
Two embodiment of accompanying drawings
Fig. 1 is the structural representation of the tower crane pull bar stress balance device of two pull bars.
Short rod 3 is linked to each other with the cat head of tower crane with bearing pin 1 by otic placode 2, and 6 is compensating bar, and 7 is the hoisting crane pull bar.The pulley 4 that usefulness is installed is connected with compensating bar with bearing pin by little arm-tie 5.
Fig. 2 is the structural representation of the tension bar stress balancing apparatus for tower crane of three pull bars
Arm-tie 8 upper ends are connected with cat head with bearing pin 1, and the lower end is connected with equalizing brake lever with bearing pin. 9 Be lower pulling plate, 10 is little balanced lever.
Claims (4)
1, a kind of tower crane pull bar stress balance device is connected the top of tower crane by a short rod by bearing pin, it is characterized in that being welded with at the two ends of short rod the otic placode of band pin shaft hole.The upper end otic placode of short rod is connected with the tower item by bearing pin, and the lower end otic placode of short rod is connected with equalizing lever by bearing pin.The pull bar that connects tower crane at the two ends of equalizing lever respectively by bearing pin.
2, according to the described tower crane pull bar of claim 1 stress balance device, it is characterized in that an end of equalizing lever, connect short arm-tie with bearing pin, the pulley that uses when the lifting pull bar is housed in the upper end of short arm-tie.
3, according to the described tower crane pull bar of claim 2 stress balance device, it is characterized in that connecting lower pulling plate by bearing pin at equalizing lever one end, the lower end of lower pulling plate connects little equalizing lever with bearing pin, and the two ends of little equalizing lever and the other end of equalizing lever are connected the pull bar of tower crane respectively by bearing pin.
4, according to the described tower crane pull bar of claim 1 stress balance device, it is characterized in that the also available arm-tie of short rod replaces, equalizing lever is connected cat head by arm-tie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01236168 CN2467488Y (en) | 2001-03-26 | 2001-03-26 | Tension bar stress balancing apparatus for tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01236168 CN2467488Y (en) | 2001-03-26 | 2001-03-26 | Tension bar stress balancing apparatus for tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2467488Y true CN2467488Y (en) | 2001-12-26 |
Family
ID=33649179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01236168 Expired - Fee Related CN2467488Y (en) | 2001-03-26 | 2001-03-26 | Tension bar stress balancing apparatus for tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2467488Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317195A (en) * | 2009-02-11 | 2012-01-11 | V&M德国有限公司 | Be used for lashing and reinforce the pull bar of jib boom |
-
2001
- 2001-03-26 CN CN 01236168 patent/CN2467488Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317195A (en) * | 2009-02-11 | 2012-01-11 | V&M德国有限公司 | Be used for lashing and reinforce the pull bar of jib boom |
| CN102317195B (en) * | 2009-02-11 | 2013-07-31 | V&M德国有限公司 | Traction rod for bracing a crane jib |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |