JP2011016662A - Telescopic jib for crane, especially for mobile crane - Google Patents
Telescopic jib for crane, especially for mobile crane Download PDFInfo
- Publication number
- JP2011016662A JP2011016662A JP2010154722A JP2010154722A JP2011016662A JP 2011016662 A JP2011016662 A JP 2011016662A JP 2010154722 A JP2010154722 A JP 2010154722A JP 2010154722 A JP2010154722 A JP 2010154722A JP 2011016662 A JP2011016662 A JP 2011016662A
- Authority
- JP
- Japan
- Prior art keywords
- jib
- half shell
- crane
- stretchable
- plate material
- 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 abstract description 22
- 239000013067 intermediate product Substances 0.000 claims abstract description 6
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 230000003187 abdominal effect Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Images
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
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
-
- 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
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Metal Rolling (AREA)
Abstract
Description
本発明は、クレーン用、特に移動式クレーン用の伸縮ジブ関するものである。この伸縮ジブは、主ジブを備え、この主ジブは、1つの基礎ボックスと、その中で入れ子式に進入及び進出可能な複数の伸縮ジブ部分とを有する。前記基礎ボックスと前記伸縮ジブ部分が、異形材から成り、前記基礎ボックスと前記伸縮ジブ部分が、板材から作製されている。前記基礎ボックスと前記伸縮ジブ部分のそれぞれが、上側の半形シェルと下側の半形シェルとを有し、前記上側の半形シェル及び下側の半形シェルの相対向する脚部が、互いに溶接されている。 The present invention relates to a telescopic jib for a crane, particularly a mobile crane. The telescopic jib includes a main jib, which has a base box and a plurality of telescopic jib portions that can be nested and advanced therein. The foundation box and the stretchable jib portion are made of a deformed material, and the foundation box and the stretchable jib portion are made of a plate material. Each of the foundation box and the telescopic jib portion has an upper half shell and a lower half shell, and the opposing legs of the upper half shell and the lower half shell are: Welded together.
このような伸縮ジブが特許文献1または特許文献2により公知である。 Such a stretchable jib is known from Patent Document 1 or Patent Document 2.
重量を最適化して異なる負荷を受容できるようにするために、上側シェルの肉厚は、一般に、下側シェルの肉厚よりも薄くなっている。 In order to optimize weight and accept different loads, the thickness of the upper shell is generally thinner than the thickness of the lower shell.
これに関連して触れておくなら、しばしば標準肉厚について述べられるが、これは、板材の圧延時にしばしば起こる完全には避けることのできない僅かな厚さ変動が、横方向でも縦方向でもここでは考慮されないことを意味する。 In this context, it is often mentioned about the standard wall thickness, which is the slight thickness variation that is often unavoidable that often occurs when rolling a sheet, but here both in the horizontal and longitudinal directions. Means not considered.
最大負荷の領域に対する肉厚設計が、ジブ重量を本質的に決定することになる。その場合、全体として当然に、総重量は、追求するジブ長さ、従って伸縮ジブ部分の所要数によっても決まる。最大限変更可能なジブ重量、ジブ全長及び変更可能なジブ高さに関する諸々の制限は、最大軸荷重、通行高さ及び最大全長を規定する道路交通許可令によって明らかとなる。 The wall thickness design for the area of maximum load will essentially determine the jib weight. In that case, as a whole, naturally the total weight also depends on the jib length sought and thus the required number of telescopic jib parts. Limitations on maximum changeable jib weight, jib length and changeable jib height are revealed by road traffic permit regulations that specify maximum axle load, traffic height and maximum length.
この理由から、ジブの重量を極力僅かなものに抑え、利用可能な構造空間内で高い異形材剛性を達成するように努められている。 For this reason, efforts have been made to minimize the weight of the jib and to achieve high profile rigidity within the available structural space.
これに関して、特許文献1で提案されているのは、下側シェルをサンドイッチ方式で製造することであり、詳細には、下側シェルを、相互に離間した2つの比較的薄い板材と、それらの間に設けられて空隙を完全にまたは部分的に満たす充填材とから製造することである。 In this regard, Patent Document 1 proposes that the lower shell is manufactured in a sandwich manner, and more specifically, the lower shell is divided into two relatively thin plates separated from each other, and their It is produced from a filler provided in between to completely or partially fill the void.
それとは別に、板材をいわゆる標準肉厚で製造し、次に、この板材に対して局所的に板材片または薄板を溶接することが公知である。しかしながら、この技術の欠点として、溶接部の領域において材料変化または組織変化が生じることがあり、これらの変化が、全体として強度に不利に影響する。 Apart from that, it is known to produce a plate with a so-called standard wall thickness and then locally weld a plate piece or sheet to this plate. However, a disadvantage of this technique is that material changes or structural changes can occur in the area of the weld, and these changes adversely affect the strength as a whole.
さらに、溶接時に入り込む応力によって溶接歪みが生じる。この溶接歪みは、箱を引き続き矯正処理することによって再び取り除く必要がある。この矯正処理は、それ自体が応力を発生させ、寸法を不安定にすることがある。これにより、引き続き行われる組立過程のときや、組立て後の運転のときに、不均一な接触パターン及び摩耗パターンが表面化する。 Furthermore, welding distortion occurs due to stress entering during welding. This weld distortion must be removed again by subsequent straightening of the box. This straightening process itself generates stress and can cause dimensional instability. As a result, the non-uniform contact pattern and wear pattern are surfaced during the subsequent assembly process or during operation after assembly.
そこで本発明の目的は、製造が比較的簡単で、寸法が一層安定し歪みが少なく、しかも、重量が低減しつつも高い負荷能力を求める、伸縮ジブに対して提起される要求を満足するクレーン用伸縮ジブを提供することである。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is a crane that satisfies the requirements posed for a telescopic jib that is relatively simple to manufacture, that is more dimensionally stable, less distorted, and that requires high load capacity while reducing weight. It is to provide a telescopic jib for use.
この課題は、本発明のクレーン用、特に移動式クレーン用の伸縮ジブによって解決される。本発明の伸縮ジブは、主ジブを備え、前記主ジブは、1つの基礎ボックスと、そのなかで入れ子式に進入及び進出可能な複数の伸縮ジブ部分とを有し、前記基礎ボックスと前記伸縮ジブ部分が、異形材から成り、前記基礎ボックスと前記伸縮ジブ部分が、板材から作製されており、前記基礎ボックスと前記伸縮ジブ部分のそれぞれが、上側の半形シェルと下側の半形シェルとを有し、前記上側の半形シェル及び下側の半形シェルの相対向する脚部が、互いに溶接されており、前記基礎ボックス及び前記伸縮ジブ部分用の前記板材は、圧延で製造時に局所的に強化された板材から形成されている。 This problem is solved by the telescopic jib for the crane of the present invention, particularly for a mobile crane. The telescopic jib of the present invention includes a main jib, and the main jib includes one foundation box and a plurality of telescopic jib portions that can be nested and advanced therein, and the foundation box and the telescopic jib. The jib portion is made of a profile material, and the foundation box and the stretchable jib portion are made of a plate material, and the foundation box and the stretchable jib portion are respectively composed of an upper half shell and a lower half shell. And the opposite half of the upper half shell and the lower half shell are welded to each other, and the base material for the base box and the telescopic jib portion is manufactured by rolling. It is formed from locally strengthened plate material.
中間製品を製造するときの圧延の際に局所的に強化した部分を意識的に生成すると、そのことの利点として、材料の組織が変化せず、つまり、応力パターンを補償された均質な材料から生じさせることができる。こうして、その都度局所的に必要となる肉厚を計算すること、例えば、強化部の溶接によって引き起こされる材料弱化及び付加的な重量増を考慮することがもはや必要でなくなる。一方で、負荷能力と肉厚との依存関係が一層簡単に具現することができ、他方で、全体として重量の節約ができる。 Consciously creating locally strengthened parts during rolling when manufacturing intermediate products has the advantage that the material structure does not change, i.e. from homogeneous materials with compensated stress patterns. Can be generated. Thus, it is no longer necessary to calculate the wall thickness required locally each time, for example taking into account material weakening and additional weight gain caused by welding of the reinforcement. On the other hand, the dependency between load capacity and wall thickness can be realized more easily, and on the other hand, weight can be saved as a whole.
他の利点としては、対応する中間製品(板材)が製造業者から完成品として提供され、手間をかけて独自の異形材の縁と局所的に強化した部分とを追加的に溶接することを省くことができる。 Another advantage is that the corresponding intermediate product (plate) is provided as a finished product by the manufacturer, saving the additional effort of welding the unique profile edges and locally strengthened parts. be able to.
以下、本発明が説明され、略示した実施例について、しかも対応して形成された半形シェルについて説明される。 In the following, the invention will be described, with reference to the exemplary embodiments shown and the half-shells formed correspondingly.
図から明らかなように、シェルが異なる肉厚を有する。強化部1、5は、ここでは脚部の末端領域、いわゆる腹部の領域に形成されている。強化部3は、頂部領域、いわゆる上側の弦状領域と、下側の弦状領域とに形成されている。中間領域は、通常の肉厚、つまり標準肉厚を有する。
As is apparent from the figure, the shells have different wall thicknesses. Here, the reinforcing portions 1 and 5 are formed in the end region of the leg portion, that is, the so-called abdominal region. The reinforcing
図面には、通常の横断面形状が示されている。しかしながら、本発明はこれに限定されているのではなく、シェルが、長方形の横断面である場合にも同様に利用することができる。 The drawing shows a typical cross-sectional shape. However, the present invention is not limited to this, and can be similarly used when the shell has a rectangular cross section.
冒頭で既に触れたように、異なる板材厚は、主に、事前に製造された板材を冷間圧延することによって生成される。ロールは、所望する肉厚に対応するように離反及び接近するようになっている。実務において、この板材は、テーラードロールドブランク(TRB)と称される。局所的に強化された板材を製造する際に、溝付きロールを利用することも可能である。 As already mentioned at the beginning, different plate thicknesses are generated mainly by cold rolling pre-manufactured plate. The rolls are separated and approached to correspond to the desired wall thickness. In practice, this plate is called tailored rolled blank (TRB). It is also possible to utilize a grooved roll when producing locally strengthened plate material.
Claims (4)
前記基礎ボックス及び前記伸縮ジブ部分用の前記中間製品または前記板材は、圧延で製造時に局所的に強化された板材から形成されていることを特徴とする伸縮ジブ。 Telescopic jib for a crane, in particular a mobile crane, the telescopic jib comprising a main jib, said main jib being capable of entering and advancing telescopically in one foundation box and in the foundation box A plurality of stretchable jib portions, wherein the foundation box and the stretchable jib portion are made of a deformed material, and the foundation box and the stretchable jib portion are made of an intermediate product or a plate material, the foundation box and the Each of the telescopic jib portions has an upper half shell and a lower half shell, and the opposing leg portions of the upper half shell and the lower half shell are welded to each other.
The stretchable jib characterized in that the intermediate product or the plate material for the base box and the stretchable jib portion is formed from a plate material locally strengthened during production by rolling.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202009009143.0 | 2009-07-07 | ||
DE200920009143 DE202009009143U1 (en) | 2009-07-07 | 2009-07-07 | Telescopic boom for cranes, in particular mobile cranes |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011016662A true JP2011016662A (en) | 2011-01-27 |
JP5902882B2 JP5902882B2 (en) | 2016-04-13 |
Family
ID=41051980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010154722A Active JP5902882B2 (en) | 2009-07-07 | 2010-07-07 | Telescopic jib for cranes, especially for mobile cranes |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP5902882B2 (en) |
BE (1) | BE1019742A3 (en) |
DE (2) | DE202009009143U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102408062A (en) * | 2011-09-20 | 2012-04-11 | 徐州重型机械有限公司 | Supporting leg and applied crane thereof |
CN102837161A (en) * | 2012-09-04 | 2012-12-26 | 南阳二机石油装备(集团)有限公司 | Manufacturing method and positioning and clamping device of telescopic boom body of crane |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202010006624U1 (en) | 2010-05-10 | 2010-08-05 | Manitowoc Crane Group France Sas | Crane jib, in particular mobile crane jib, with prestressed tension elements |
US9290363B2 (en) | 2011-07-21 | 2016-03-22 | Manitowoc Crane Companies, Llc | Tailor welded panel beam for construction machine and method of manufacturing |
DE102012001184B4 (en) * | 2012-01-24 | 2015-02-12 | Böcker AG | Crane with a telescopic mast system |
DE102015122395A1 (en) | 2015-12-21 | 2017-06-22 | GEDIA Gebrüder Dingerkus GmbH | Process for the production of cold and / or hot formed components substantially of metal and / or sheet metal and cold and / or hot formed component substantially of metal and / or sheet metal |
DE102015122396A1 (en) | 2015-12-21 | 2017-06-22 | GEDIA Gebrüder Dingerkus GmbH | Process for producing a composite component / composite product and composite component / composite product |
DE102015122410A1 (en) | 2015-12-21 | 2017-06-22 | GEDIA Gebrüder Dingerkus GmbH | Process for the production of components with finished areas mainly of metal as well as a component with finished areas |
DE102016112748A1 (en) | 2016-07-12 | 2018-01-18 | Schwing Gmbh | Large manipulator with weight-optimized articulated mast |
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JPS58187280A (en) * | 1982-04-24 | 1983-11-01 | Kyoritsu Kinzoku Kogyo Kk | Welding method and its base material |
JPS6165087U (en) * | 1984-10-02 | 1986-05-02 | ||
JPH0735494U (en) * | 1993-12-13 | 1995-07-04 | 株式会社アイチコーポレーション | Telescopic boom |
JPH07292771A (en) * | 1994-01-24 | 1995-11-07 | Daiwa House Ind Co Ltd | Column-beam connective structure and method therefor |
JP2006021877A (en) * | 2004-07-08 | 2006-01-26 | Tadano Ltd | Telescopic boom |
JP2007508177A (en) * | 2003-10-08 | 2007-04-05 | ベール ゲーエムベーハー ウント コー カーゲー | Use of components, especially hybrid components and components for vehicle lateral supports |
Family Cites Families (3)
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DE19711975B4 (en) | 1997-03-12 | 2006-09-07 | Terex-Demag Gmbh & Co. Kg | Telescopic boom for mobile cranes |
DE10030190A1 (en) * | 1999-06-22 | 2001-05-31 | Atecs Mannesmann Ag | Telescopic boom for vehicle cranes has telescopic arms with profiled shell made from profiled sheet metal with varying nominal wall thickness adapted to load but with constant internal hollow dimensions |
DE19948830B4 (en) | 1999-10-06 | 2005-11-24 | Terex-Demag Gmbh & Co. Kg | Telescopic boom for cranes |
-
2009
- 2009-07-07 DE DE200920009143 patent/DE202009009143U1/en not_active Expired - Lifetime
-
2010
- 2010-06-29 BE BE2010/0383A patent/BE1019742A3/en not_active IP Right Cessation
- 2010-07-02 DE DE102010026253A patent/DE102010026253A1/en not_active Withdrawn
- 2010-07-07 JP JP2010154722A patent/JP5902882B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS58187280A (en) * | 1982-04-24 | 1983-11-01 | Kyoritsu Kinzoku Kogyo Kk | Welding method and its base material |
JPS6165087U (en) * | 1984-10-02 | 1986-05-02 | ||
JPH0735494U (en) * | 1993-12-13 | 1995-07-04 | 株式会社アイチコーポレーション | Telescopic boom |
JPH07292771A (en) * | 1994-01-24 | 1995-11-07 | Daiwa House Ind Co Ltd | Column-beam connective structure and method therefor |
JP2007508177A (en) * | 2003-10-08 | 2007-04-05 | ベール ゲーエムベーハー ウント コー カーゲー | Use of components, especially hybrid components and components for vehicle lateral supports |
JP2006021877A (en) * | 2004-07-08 | 2006-01-26 | Tadano Ltd | Telescopic boom |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102408062A (en) * | 2011-09-20 | 2012-04-11 | 徐州重型机械有限公司 | Supporting leg and applied crane thereof |
CN102837161A (en) * | 2012-09-04 | 2012-12-26 | 南阳二机石油装备(集团)有限公司 | Manufacturing method and positioning and clamping device of telescopic boom body of crane |
CN102837161B (en) * | 2012-09-04 | 2015-04-22 | 南阳二机石油装备(集团)有限公司 | Manufacturing method and positioning and clamping device of telescopic boom body of crane |
Also Published As
Publication number | Publication date |
---|---|
DE202009009143U1 (en) | 2009-09-03 |
JP5902882B2 (en) | 2016-04-13 |
DE102010026253A1 (en) | 2011-01-13 |
BE1019742A3 (en) | 2012-12-04 |
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