EP2041018A1 - Use of a bush in the correction of tower elements of a tower crane - Google Patents
Use of a bush in the correction of tower elements of a tower craneInfo
- Publication number
- EP2041018A1 EP2041018A1 EP07786089A EP07786089A EP2041018A1 EP 2041018 A1 EP2041018 A1 EP 2041018A1 EP 07786089 A EP07786089 A EP 07786089A EP 07786089 A EP07786089 A EP 07786089A EP 2041018 A1 EP2041018 A1 EP 2041018A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tower
- elements
- pin
- openings
- tower crane
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 2
- 229910001149 41xx steel Inorganic materials 0.000 description 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
- B66C23/28—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
- B66C23/283—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements
- B66C23/286—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements with locking devices
Definitions
- the invention relates to the use of a socket in the connection of tower filempnt.pn a tower crane.
- Tower cranes comprise a crane base from which a tower extends upwards. At an upper portion of the tower usually a boom and possibly a counter-jib is attached. Tower cranes are known for example from the patent DE 35 10 116 C2.
- the tower of a tower crane usually comprises several tower elements (also referred to as "tower shots") .
- the tower elements can be 4.5m long and 2.5t heavy, for example is thereby made possible that the ends of the corner posts of the tower elements each have pins or sleeves for pin receptacle, which can be inserted into one another during assembly.
- the pins and the sleeves for receiving the pins can thereby aligned with one another, continuous and substantially cylindrical, In each case a substantially cylindrical bolt is fitted in.
- a tower element can only have sleeves at its one end and only pins at the other end.
- the openings (bores) in the spigots and pods of the tower elements may become larger (beat) over time due to the strong forces acting on them and the constantly changing stress, until finally the permissible tolerance limit is reached.
- the invention has for its object to connect tower elements with different sized holes and thereby avoid the disadvantages of the known solutions.
- Claim 4 relates to a tower crane, in which a socket is used according to claim 1. Further embodiments are the subject matter of the subclaims or described below.
- the bushing preferably has as inner diameter (within the tolerance limits) the diameter of the openings in the sleeves of one tower element (with the smaller holes) and as outer diameter the diameter of the openings in the pins of the other tower element (with the larger openings).
- the bushing is preferably made of a high quality material, most advantageously of the same material as the bolt used, preferably high quality steel such as alloy 42 CrMo 4.
- the sleeve preferably has at one end to an outwardly projecting collar against which Moving too far into the hole insures. The bush is pushed into the pin with the larger opening.
- the socket can be removed again after years, it can be knocked out by means of a simple tool.
- the turrets of the turret are always at the top, while the sleeves are located at the bottom and are pushed over the pins of the bottom tower element.
- the invention also provides a method of repairing a worn opening in the journal of a tower element of a tower crane, in which the opening in the journal is drilled so as to obtain a cylindrical shape of increased diameter, and then a bush in the Opening is pushed, whose inner diameter corresponds to the original inner diameter of the opening.
- the solution according to the invention has the advantage that welding is completely eliminated.
- Figure 1 shows the cross section through a portion of pin and sleeve of two interconnected tower elements.
- the sleeve 1 is shown a corner post of a tower element, which is pushed over the pin 2 of another tower element.
- the cylindrical opening 3 in the pin 2 has a larger diameter than the openings 4a, 4b in the sleeve 1.
- a cylindrical bushing 5 is inserted, whose outer diameter corresponds to the diameter of the opening 3 of the pin 2 and whose Inner diameter of the openings 4a, 4b of the sleeve 1 corresponds.
- the bush 5 has on the side of the opening 4 a circumferential collar 6.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006033594A DE102006033594B3 (en) | 2006-07-18 | 2006-07-18 | Use of a socket in the connection of tower elements of a tower crane |
PCT/EP2007/006287 WO2008009399A1 (en) | 2006-07-18 | 2007-07-16 | Use of a bush in the connection of tower elements of a tower crane |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2041018A1 true EP2041018A1 (en) | 2009-04-01 |
EP2041018B1 EP2041018B1 (en) | 2010-08-04 |
Family
ID=38556324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07786089A Active EP2041018B1 (en) | 2006-07-18 | 2007-07-16 | Use of a bush in the correction of tower elements of a tower crane |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2041018B1 (en) |
AT (1) | ATE476392T1 (en) |
DE (2) | DE102006033594B3 (en) |
WO (1) | WO2008009399A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114408770A (en) * | 2022-01-13 | 2022-04-29 | 中联重科建筑起重机械有限责任公司 | Standard knot device and tower crane |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1169226A (en) * | 1966-02-01 | 1969-10-29 | Richier Sa | Improvements in or relating to Towers or Beams |
DE2351177A1 (en) * | 1973-10-11 | 1975-04-24 | Liebherr Hans Dr Ing E H | TOWER JOINT |
SU887440A1 (en) * | 1979-11-02 | 1981-12-07 | Механический Завод Управления Капитального Ремонта Ленгорисполкома | Device for matching three-dimensional tower crane sections |
FR2680813B1 (en) * | 1991-08-30 | 1995-10-20 | Potain Sa | REMOVABLE ASSEMBLY DEVICE FOR METAL FRAME ELEMENTS. |
-
2006
- 2006-07-18 DE DE102006033594A patent/DE102006033594B3/en not_active Expired - Fee Related
-
2007
- 2007-07-16 EP EP07786089A patent/EP2041018B1/en active Active
- 2007-07-16 DE DE502007004661T patent/DE502007004661D1/en active Active
- 2007-07-16 WO PCT/EP2007/006287 patent/WO2008009399A1/en active Application Filing
- 2007-07-16 AT AT07786089T patent/ATE476392T1/en active
Non-Patent Citations (1)
Title |
---|
See references of WO2008009399A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE476392T1 (en) | 2010-08-15 |
WO2008009399A1 (en) | 2008-01-24 |
EP2041018B1 (en) | 2010-08-04 |
DE102006033594B3 (en) | 2008-01-24 |
DE502007004661D1 (en) | 2010-09-16 |
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