WO2008047471A1 - Grue à bras - Google Patents
Grue à bras Download PDFInfo
- Publication number
- WO2008047471A1 WO2008047471A1 PCT/JP2007/001119 JP2007001119W WO2008047471A1 WO 2008047471 A1 WO2008047471 A1 WO 2008047471A1 JP 2007001119 W JP2007001119 W JP 2007001119W WO 2008047471 A1 WO2008047471 A1 WO 2008047471A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hoisting
- jib
- wire rope
- tip
- link
- Prior art date
Links
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
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
-
- 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
- B66C23/06—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 with jibs mounted for jibbing or luffing movements
-
- 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
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
Definitions
- the present invention relates to a jib crane used for transporting heavy objects.
- Some jib cranes are installed at shipyards and are used for transporting heavy objects.
- This type of jib crane has a swivel provided above it and an overhang from the swivel.
- Patent Document 1 showing a climbing crane as a jib crane.
- the jib is pivoted at the base of the swivel and can be raised or lowered by pulling or pulling the hoisting wire rope.
- a lifting tool such as a hook is hung from the tip of the jib via a hoisting wire rope, and a suspended load is hung on the hoisting tool, and the hoisting wire rope is wound and fed out.
- a hanging work that is, a cargo handling work is performed.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-130870
- the displacement of the hanging position and the dragging of the suspended load described above are mainly used for shipyards.
- it has a great adverse effect on the centering of heavy objects, which not only deteriorates the centering efficiency, but is not preferable from the viewpoint of ensuring the safety of work.
- the present invention has been made based on the above-described circumstances, and an object of the present invention is to provide a jib crane capable of improving work efficiency and sufficiently ensuring work safety. There is.
- the present invention comprises a jib pivotally supported on a swivel base and a hoisting drum around which a hoisting wire rope is wound.
- the hoisting tool is hung on the hoisting wire rope fed from the hoisting drum through the tip of the jib, while the hoisting wire rope is fixed to the swivel side and the hoisting wire rope against the hoisting drum is fixed.
- a hoisting device that lifts and lowers the hoisting tool by winding and unwinding, and a hoisting drum on which a hoisting wire rope is wound on a swivel base, and the jib is hung on the hoisting wire rope fed from the hoisting drum.
- the jib crane comprising the hoisting device that fixes the tip of the hoisting wire rope to the swivel side and raises and lowers the jib by pulling in and pulling out the hoisting wire rope with respect to the hoisting drum.
- Is equipped with a conversion device that is provided on the swivel base and converts the load applied to the hoisting wire rope into the drawing-in of the pulling-in wire rope during the handling operation.
- the conversion device is a link in which a base end is rotatably supported on the swivel base side, and a leading end of a hoisting wire and an undulating wire rope are connected to each of the tip ends.
- a link that can be rotated in one direction when transmitted through the hoisting wire rope, and a stopper that is provided on the swivel base and restricts the rotation of the link in the other direction when it comes into contact with the link.
- the undulating wire rope suspends the middle part of the jib as seen in the longitudinal direction of the jib, and in this case, the amount of sinking of the jib tip due to the bending of the jib is suppressed.
- the jib crane of the present invention can be used to lift or lower the suspended load even when the tip of the jib is tilted forward due to the bending or when the forward tilt is eliminated during the handling operation.
- the position will not be undesirably displaced. Therefore, even if the suspended load is a heavy load in shipbuilding work, centering of the heavy load is facilitated and a significant improvement in the centering efficiency is achieved. It will also be excellent.
- FIG. 1 is a side view of a traveling type jib crane.
- FIG. 2 is a view showing winding of a hoisting wire rope.
- FIG. 3 is a view showing winding of the undulating wire rope.
- FIG. 4 is a side view showing a conversion device of an example.
- FIG. 5 Shows the vicinity of the tip of the hoisting and undulating wire rope, (a) is an arrow view from Va direction in Fig. 4, (b) is an arrow view from Vb direction in Fig. 4 .
- FIG. 6 is a diagram for explaining the function of the conversion device of FIG.
- FIG. 1 shows a traveling type jib crane, and this jib crane includes a traveling body 2.
- This traveling body 2 has a plurality of legs 4, and these legs 4 are placed on a pair of rails 8 via wheels 6. Therefore, the traveling body 2 can travel along the rail 8.
- a portal frame 10 is constructed on the traveling body 2, and a turntable 12 is disposed on the portal frame 10.
- This swivel base 12 can be swiveled in a horizontal plane.
- a jib 14 extends from the front of the swivel base 1 2, and the base end of the jib 14 is supported on the swivel base 12 side through a pivot 15 so as to be raised and lowered.
- An upper frame 16 called a so-called A-shaped frame is erected on the swivel base 12 and the hoisting drum 18 of the hoisting device and the hoisting drum 20 of the hoisting device are respectively provided. Has been placed. A pair of hoisting wire openings 22 are wound around the hoisting drum 18, and a pair of hoisting wire ropes 24 are also wound around the hoisting drum 20. Note that the base ends of the hoisting wire rope 22 and the undulating wire rope 24 are fixed to the corresponding drums 18, 20.
- a tip sheave row 30 for the hoisting wire rope 2 2 is disposed at the tip of the jib 14, and the undulating wire is located in the middle of the jib 14 as viewed in the longitudinal direction.
- Suspension sheave row 3 2 for rope 2 4 is arranged As is apparent from FIG.
- the hoisting wire rope 2 2 from the hoisting drum 1 8 is led to the tip sheave row 30 through the top sheave row 2 6, and the hook 3 4 is lifted up and down by a plurality of elevating sheave rows 3 6 and then reciprocated a plurality of times between the tip sheave row 30 and the top sheave row 2 6 It returns toward the base 1 2, and its tip is fixed to the swivel base 1 2 side via the conversion device 3 8. Therefore, when the winding wire rope 2 2 is wound and unwound as the winding drum 18 rotates, the hook 3 4 moves up and down.
- the undulating wire rope 24 from the undulating drum 20 is led to the suspended sheave row 3 2 via the topsive row 28, and the topsive row 2 After reciprocating several times between 8 and the suspension sheave row 3 2, the top sheave row 2 8 returns to the swivel base 1 2, and the tip of them returns to the swivel base via the conversion device 3 8. 1 It is fixed on the 2 side. Accordingly, when the hoisting rope 24 is retracted or pulled out with the rotation of the hoisting drum 20, the jib 14 can rotate around the pivot 15 at the base end, that is, can be raised or lowered.
- FIGS. 4 and 5 specifically show the periphery of the tips of the hoisting wire rope 22 and the undulating wire rope 24.
- Connecting metal fittings 40 are respectively attached to the ends of the hoisting wire ropes 22, and these connecting metal fittings 40 are connected to the hoisting equalizer 42.
- the hoisting equalizer 4 2 is substantially U-shaped, and extends upward from both upper corners of the base 4 4, which forms a downward triangular shape. It has a pair of arms 4 6 a and 4 6 b. The base ends of these arms 46 are rotatably connected to the bases 44, and the tips of the winding ropes 22 are connected to the tips of the arms 46 via connecting fittings 40, respectively. Yes.
- one arm 4 6 a is divided in the longitudinal direction, and these divided portions are connected to each other via a load cell 48.
- the load cell 48 is a load sensor that detects a load applied to the hoisting wire rope 2 2.
- a rotatable connecting bracket 50 projects from the lower portion of the base 44, and the connecting bracket 50 is connected to the conversion device 38 described above.
- the ends of the pair of undulating wire ropes 24 are also connected to the above-described connecting metal fitting 40, hoisting equalizer 42, and connecting metal fitting 50, respectively. It is connected to the conversion device 3 8 through the same connecting metal 5 2, undulating equalizer 5 4 and connecting metal 5 5.
- the conversion device 3 8 includes a bearing bracket 5 6, and this bearing bracket 5 6 is erected from the swivel frame 5 8 of the swivel base 1 2 and fixed to the swivel frame 5 8. ing.
- the base end of the V-shaped link 6 2 is rotatably supported on the bearing bracket 56 via a pivot pin 60, and is wound around the distal ends of both link arms 6 2a and 6 2b of the V-shaped link 62.
- the upper and undulating equalizers 4 2 and 5 4 are connected to each other in a freely rotatable manner. Therefore, the ends of the hoisting wire rope 22 and the undulating wire rope 24 are fixed to the turntable 12 side via the V-shaped link 62.
- the bearing bracket 5 6 is provided with a stopper 6 4, which is connected to the link arm 6 of the V-shaped link 6 2 when the V-shaped link 6 2 is in the state shown in FIG. 2 Abuts against a, preventing V-link 6 2 from rotating clockwise as seen in FIG. That is, since the undulating wire rope 24 is suspended by the jib 14, tension is constantly applied to the undulating wire rope 24, and this tension rotates the V-shaped link 62 in the clockwise direction as viewed in FIG. 4. As a result, the V-shaped link 6 2 is held in a state in which the link arm 6 2 a on the hoisting wire rope 22 side is in contact with the stopper 64.
- reference numeral 66 denotes a steady-state fitting for the hoisting equalizer 42, and this steady-state fitting 66 is provided upright from the revolving frame 58.
- the jib 14 receives the load of the suspended load W via the hoisting wire rope 2 2, and the jib 14 is bent due to this load, The tip sinks as shown by the two-dot chain line in FIG.
- the jib 14 has an undulation angle ⁇ inclined upward and the conversion device 3 8 described above is not provided, the lifting position of the suspended load W indicated by the two-dot chain line is the ground cutting position. It will be displaced in front of the jib 14 rather than the solid load W that should be on the vertical line at
- Such an increase in the undulation angle 0 causes the tip of the jib 14 to be displaced toward the base end, so that the displacement of the suspended load W due to the above-described sinking is compensated, and the suspended load W is lifted. The position is maintained on the vertical line at the ground cutting position.
- the effective length of the link arm 6 2 b is determined in consideration of the amount of bending of the jib 14 described above, that is, the amount of sinking of its tip. Yes.
- the undulating wire rope 2 4 hangs not the tip of the jib 14 but the central part thereof, the amount of subsidence at the tip of the jib 14 can be kept small. Greatly contributes to the downsizing of products.
- the present invention is not limited to a traveling type jib crane, but can be similarly applied to other types of jib cranes such as a climbing crane.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020097009902A KR101358696B1 (ko) | 2006-10-17 | 2007-10-16 | 지브 크레인 |
CN2007800389342A CN101528584B (zh) | 2006-10-17 | 2007-10-16 | 悬臂起重机 |
US12/444,805 US8141725B2 (en) | 2006-10-17 | 2007-10-16 | Jib crane |
DE112007002434T DE112007002434B4 (de) | 2006-10-17 | 2007-10-16 | Auslegerkran |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006282532A JP5043397B2 (ja) | 2006-10-17 | 2006-10-17 | ジブクレーン |
JP2006-282532 | 2006-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008047471A1 true WO2008047471A1 (fr) | 2008-04-24 |
Family
ID=39313727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/001119 WO2008047471A1 (fr) | 2006-10-17 | 2007-10-16 | Grue à bras |
Country Status (7)
Country | Link |
---|---|
US (1) | US8141725B2 (ja) |
JP (1) | JP5043397B2 (ja) |
KR (1) | KR101358696B1 (ja) |
CN (1) | CN101528584B (ja) |
DE (1) | DE112007002434B4 (ja) |
TW (1) | TWI389837B (ja) |
WO (1) | WO2008047471A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW201124333A (en) * | 2010-01-11 | 2011-07-16 | tian-ming Zhang | Crane. |
CN102530737A (zh) * | 2012-02-24 | 2012-07-04 | 叶楚中 | 风力发电机自升安装技术 |
CN103287996B (zh) * | 2012-04-16 | 2014-11-05 | 上海振华重工(集团)股份有限公司 | 门座式起重机及其四连杆系统 |
CN103613010A (zh) * | 2013-11-22 | 2014-03-05 | 中联重科股份有限公司 | 动臂塔式起重机 |
CN110869308B (zh) * | 2017-07-18 | 2021-02-02 | 株式会社多田野 | 起重机车 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52135150A (en) * | 1976-05-07 | 1977-11-11 | Ishikawajima Harima Heavy Ind Co Ltd | Anti-oscillation control apparatus of jib crane |
JP2002053289A (ja) * | 2000-08-09 | 2002-02-19 | Ishikawajima Harima Heavy Ind Co Ltd | ジブクレーン |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU933621A1 (ru) | 1980-07-15 | 1982-06-07 | Центральное Конструкторское Бюро "Строймаш" Министерства Строительного,Дорожного И Коммунального Машиностроения Ссср | Башенный кран |
NO153330C (no) | 1982-12-06 | 1986-02-26 | Hydraulik Brattvaag As | Anordning ved kran. |
US4579234A (en) | 1984-03-16 | 1986-04-01 | American Hoist & Derrick Company | Self-erecting mobile crane |
SU1572988A1 (ru) | 1986-09-03 | 1990-06-23 | Ленинградское производственное объединение подъемно-транспортного оборудования им.С.М.Кирова | Портальный кран |
DE4042003A1 (de) * | 1990-12-22 | 1991-07-11 | Eberswalde Kranbau Gmbh | Hubseilfuehrung fuer auslegerkrane |
CN2250345Y (zh) * | 1996-04-23 | 1997-03-26 | 赵金君 | 一种新型液压履带起重布管机 |
CN2345522Y (zh) * | 1998-12-07 | 1999-10-27 | 黄信芝 | 自装自升式平衡吊 |
JP4511657B2 (ja) | 1999-11-08 | 2010-07-28 | Ihi運搬機械株式会社 | クライミングクレーンの支持方法及び装置 |
TW533186B (en) * | 2000-08-09 | 2003-05-21 | Ishikawajima Harima Heavy Ind | Jib crane |
-
2006
- 2006-10-17 JP JP2006282532A patent/JP5043397B2/ja active Active
-
2007
- 2007-10-05 TW TW096137560A patent/TWI389837B/zh active
- 2007-10-16 WO PCT/JP2007/001119 patent/WO2008047471A1/ja active Application Filing
- 2007-10-16 US US12/444,805 patent/US8141725B2/en active Active
- 2007-10-16 DE DE112007002434T patent/DE112007002434B4/de active Active
- 2007-10-16 CN CN2007800389342A patent/CN101528584B/zh active Active
- 2007-10-16 KR KR1020097009902A patent/KR101358696B1/ko active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52135150A (en) * | 1976-05-07 | 1977-11-11 | Ishikawajima Harima Heavy Ind Co Ltd | Anti-oscillation control apparatus of jib crane |
JP2002053289A (ja) * | 2000-08-09 | 2002-02-19 | Ishikawajima Harima Heavy Ind Co Ltd | ジブクレーン |
Also Published As
Publication number | Publication date |
---|---|
DE112007002434T5 (de) | 2009-09-17 |
JP2008100781A (ja) | 2008-05-01 |
CN101528584A (zh) | 2009-09-09 |
KR20090080968A (ko) | 2009-07-27 |
DE112007002434B4 (de) | 2012-02-23 |
US8141725B2 (en) | 2012-03-27 |
KR101358696B1 (ko) | 2014-02-07 |
TW200829505A (en) | 2008-07-16 |
TWI389837B (zh) | 2013-03-21 |
JP5043397B2 (ja) | 2012-10-10 |
CN101528584B (zh) | 2011-07-27 |
US20100072157A1 (en) | 2010-03-25 |
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