CN102674168B - Reinforced boom and crane with reinforced boom - Google Patents
Reinforced boom and crane with reinforced boom Download PDFInfo
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- CN102674168B CN102674168B CN201110062601.1A CN201110062601A CN102674168B CN 102674168 B CN102674168 B CN 102674168B CN 201110062601 A CN201110062601 A CN 201110062601A CN 102674168 B CN102674168 B CN 102674168B
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Abstract
The invention discloses a reinforced boom, which comprises a bottom boom section, a top boom section and at least one middle boom section which is arranged between the bottom boom section and the top boom section. Each middle boom section is of a truss-type structure and comprises main chord members and web members. Each main chord member comprises at least two chord members which are arranged in parallel. The reinforced boom not only has enough bearing capacity, but also can satisfy the requirement on transportation size and provides favorable conditions for the development of ultra-large cranes. The invention additionally discloses a crane with the reinforced boom.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to the jib of hoisting crane.The invention still further relates to the hoisting crane being provided with described jib.
Background technology
At present, for meeting the lifting demand to oversized equipment in the Larger Engineering Projects such as domestic petroleum, petrochemical industry, nuclear power, wind-powered electricity generation, iron and steel, hoisting crane more and more develops to ultra-large type, its lifting altitude is higher, work range is larger, load-carrying ability is stronger, meanwhile, bring series of problems also to the processes such as design, production, transportation, installation and use.
Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 1 is the jib structure schematic diagram of existing crawler crane; Fig. 2 is the birds-eye view of jib shown in Fig. 1; Fig. 3 is the structural representation of the single-unit intermediate arm of jib shown in Fig. 1; Fig. 4 is the end view of intermediate arm shown in Fig. 3.
As shown in the figure, jib is one of important component of hoisting crane, the jib of crawler crane generally adopts the truss structure be made up of main chord 4 and web member 5, comprise coxopodite arm 1, intermediate arm 2, epimerite arm 3, adopt pinned connection between each joint, realize different brachium combinations by the quantity increasing and decreasing intermediate arm 2, consider the comfort feature of assembling and different operating mode needs, intermediate arm length L is general longer, as 6m, 9m or 12m.
From the viewpoint of stressed, jib belongs to bi-axial bending moment, namely when hoisting crane hangs the work of carrying, jib all bears the effect of axial force and moment of flexure in luffing plane and plane of rotation, therefore from telescopic boom section analysis, needs enough sectional areas, to ensure telescopic boom section intensity, thus the effect of opposing axial force, need enough section width B and height H to ensure the moment of inertia in two planes, thus the effect of resist torque.In order to improve the load-carrying capacity of jib, the most effective way is exactly the sectional dimension increasing jib, and the limitation in height of transport vehicle and culvert of passing by one's way seriously governs the increase in cross section.
In order to realize the lifting of super-tonnage equipment, present stage mainly contains following several solution:
The first scheme, adopts multi-machine collaborative operation, namely lifts by crane with the middle-size and small-size hoisting crane of multiple stage simultaneously, jointly complete the lifting task of oversized equipment.In this case, require very high to the synchronism of multiple stage hoisting crane, because every platform hoisting crane is all furnished with independent control system, add the problem of load distribution, the Safety Pre degree of on-the-spot multi-machine collaborative operation is difficult to ensure, danger is very large; And in this case, can only play 60% ~ 80% of crane loading ability, performance utilization rate is low.
First scheme, uses various nonstandard type hoisting crane, namely simple in order to obtain large load-carrying ability, and custom-designed hoisting crane, usual this hoisting crane is arranged on circuit orbit, and super-starting balance weight maintains static, and has superpower hoisting moment, but car load can only centered by super-starting balance weight, turn round luffing in orbit, can not be with and carry walking, and this hoisting crane can only be assembled at the construction field (site), the assembly and disassembly cycle is long, affects construction speed.In addition, the requirement for bearing capacity of circuit orbit to ground is high, usually needs to carry out special processing to ground in advance, thus the additional expense outside amount paid.
The third scheme, a large amount of utilization splits assembly technique, and the parts one being exceeded transportation request split into several widgets, then are got up by assembly connection.Such as, build-up type jib in existing scheme, splits by the main chord of jib and web member, to meet transportation request, again web member and main chord is assembled into one by bearing pin after transition is in place.Under normal circumstances, large-tonnage jib length can reach more than 100 meter, the web member site assembly of hundreds of root, its degree of difficulty is well imagined, and greatly increase assembling cycle, reduce service efficiency, the application of a large amount of assembly technique simultaneously also can bring the increase of production difficulty and design cost.
Therefore, how ensureing that jib had both had enough load-carrying capacitys, can meet transportation clearance requirement again, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
The first object of the present invention is to provide a kind of heavier-duty jib.This jib had both had enough load-carrying capacitys, can meet transportation clearance requirement again, for hoisting crane provides advantage to ultra-large type development.
The second object of the present invention is to provide a kind of hoisting crane being provided with above-mentioned jib.
In order to realize above-mentioned first object, the invention provides a kind of heavier-duty jib, comprise coxopodite arm, epimerite arm and at least one joint intermediate arm between described coxopodite arm and epimerite arm, each described intermediate arm is truss structure, comprise main chord and the web member between main chord, each described main chord comprises at least two chord members be arranged in parallel respectively.
Preferably, each described main chord comprises two chord members be arranged in parallel respectively, and described chord member broad ways on cross-sectional plane is transversely arranged.
Preferably, each described main chord comprises two chord members be arranged in parallel respectively, and described chord member on cross-sectional plane along short transverse longitudinal arrangement.
Preferably, each described main chord comprises three chord members be arranged in parallel respectively, wherein the first chord member is positioned at corner point on cross-sectional plane, the second chord member and described first chord member along short transverse longitudinal arrangement, the 3rd chord member and described first chord member broad ways transversely arranged.
Preferably, each described main chord comprises four chord members be arranged in parallel respectively, and described chord member broad ways on cross-sectional plane divides two row transversely arranged.
Preferably, be welded to connect by floor between the chord member of each described main chord.
Preferably, by bolt or pinned connection between the intermediate arm that described coxopodite arm is adjacent, between intermediate arm and between the intermediate arm that is adjacent of epimerite arm.
Preferably, the chord member of each described main chord rounded on cross-sectional plane, square or rectangle.
In order to realize above-mentioned second object, present invention also offers a kind of hoisting crane, comprise assembly of getting off, super-starting balance weight, jib and surpassed mast, the coxopodite arm of described jib and the turntable of described assembly of getting off are hinged, and described jib is specially the heavier-duty jib described in above-mentioned any one.
Preferably, super-tonnage crawler crane or wheel-mounted crane is specially.
The present invention breaks through traditional design mode, provide a kind of heavier-duty jib structure, described jib adopts combined type main chord, namely each main chord is respectively by two, three, four even more chord members combine, an existing main chord is replaced with this, by the specification of combined type main chord and the optimal combination of telescopic boom section size, under the prerequisite meeting transportation clearance requirement, greatly can improve the load-carrying capacity of jib, single chord member specification simultaneously in combined type main chord, reduce than an existing main chord specification, its blanking difficulty of processing reduces greatly.In addition, compared with existing build-up type jib, it is produced and assembly difficulty reduces greatly, and assembling and Practical Performance improve greatly.
In a kind of detailed description of the invention, described jib adopts high strength exploitation between respectively saving, and its weight alleviates greatly, and between respectively saving when being more beneficial to jib work, the transmission of load, meets the strained condition of component reality; And adopting pinned connection, technology maturation is stablized, and can improve efficiency of assembling.
Hoisting crane provided by the present invention is provided with above-mentioned heavier-duty jib, and because above-mentioned heavier-duty jib has above-mentioned technique effect, the hoisting crane with this heavier-duty jib also should possess corresponding technique effect.
Accompanying drawing explanation
Fig. 1 is the jib structure schematic diagram of existing crawler crane;
Fig. 2 is the birds-eye view of jib shown in Fig. 1;
Fig. 3 is the structural representation of the single-unit intermediate arm of jib shown in Fig. 1;
Fig. 4 is the end view of intermediate arm shown in Fig. 3;
Fig. 5 is the structural representation of the first detailed description of the invention of heavier-duty jib provided by the present invention;
Fig. 6 is the birds-eye view of the jib of heavier-duty shown in Fig. 5;
Fig. 7 is the A-A view of the jib of heavier-duty shown in Fig. 5;
Fig. 8 is the schematic cross-section of the second detailed description of the invention of heavier-duty jib provided by the present invention;
Fig. 9 is the schematic cross-section of the third detailed description of the invention of heavier-duty jib provided by the present invention;
Figure 10 is the schematic cross-section of the 4th kind of detailed description of the invention of heavier-duty jib provided by the present invention;
Figure 11 is the structural representation of a kind of detailed description of the invention of hoisting crane provided by the present invention.
In Fig. 1 to Fig. 4:
1. coxopodite arm 2. intermediate arm 3. epimerite arm 4. main chord 5. web member
In Fig. 5 to Figure 11:
10. coxopodite arm 20. intermediate arm 20-1. main chord 20-1-1. first chord member 20-1-2. second chord member 20-1-3. the 3rd chord member 20-2. web member 20-2-1. upper and lower web member about 20-2-2. web member 30. epimerite arm 40. assembly 50. super-starting balance weight 60. jib of getting off 70. has surpassed mast
Detailed description of the invention
Core of the present invention is to provide a kind of heavier-duty jib.This jib had both had enough load-carrying capacitys, can meet transportation clearance requirement again, for hoisting crane provides advantage to ultra-large type development.
Another core of the present invention is to provide a kind of hoisting crane being provided with above-mentioned jib.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
" upper and lower, left and right " herein etc. represent that the term in orientation is the position relationship based on accompanying drawing, are for convenience of description, should be understood as the absolute limit to protection domain.In addition, terms such as " first, second " is herein only for convenience of description, to distinguish the different constituent elementss with same names, does not represent successively or primary-slave relation.
Please refer to Fig. 5, Fig. 6, Fig. 5 is the structural representation of the first detailed description of the invention of heavier-duty jib provided by the present invention; Fig. 6 is the birds-eye view of the jib of heavier-duty shown in Fig. 5.
In the first detailed description of the invention, integral type jib provided by the invention belongs to truss structure, and primarily of parts compositions such as coxopodite arm 10, more piece intermediate arm 20 and epimerite arms 30, the cross sectional dimensions of each intermediate arm 20 is equal.
Each intermediate arm 20 forms by main chord 20-1 and the some web member 20-2 between main chord, wherein, first intermediate arm, the second intermediate arm, the 3rd intermediate arm, the 4th intermediate arm are rectangular on cross-sectional plane, have identical aerial cross sectional size, coxopodite arm 10, epimerite arm 30 are four chord member space trusses of variable section.
The main chord end of above-mentioned coxopodite arm 10, intermediate arm 20 and epimerite arm 30 is equipped with butt flange, between any two after flange docking, by high strength exploitation, its weight alleviates greatly, between respectively saving when being more beneficial to jib work, the transmission of load, meets the strained condition of component reality.Certainly, except being connected with bolt by flange arrangement, can also be connected between each joint arm by bearing pin, compared with connecting with bolt, the technology maturation of pinned connection is stable, can improve efficiency of assembling.
Please refer to Fig. 7, Fig. 7 is the A-A view of the jib of heavier-duty shown in Fig. 5.
As shown in the figure, the chord member that each main chord 20-1 of this heavier-duty jib is arranged in parallel by two is respectively composited, and two chord members broad ways on cross-sectional plane is transversely arranged, and is welded to connect by horizontal floor, because chord member quantity increases, therefore load-carrying capacity also significantly promotes thereupon.
Because main chord contains two chord members, therefore the layout of web member 20-2 also needs to make adjustment, and specifically has following two kinds of modes:
The first is that the two ends of the upper and lower web member 20-2-1 of intermediate arm (web member namely in horizontal surface) are connected with the second chord member 20-1-2 of main chord 20-1, and the two ends of left and right web member 20-2-2 (web member namely in upright plane) are connected with the first chord member 20-1-1 of main chord 20-1, maximum cross sectional dimensions can be obtained like this.
The second is that the two ends of the upper and lower web member 20-2-1 of intermediate arm are connected with the second chord member 20-1-2 of main chord 20-1, and left and right web member is divided into two-layer, the two ends of ground floor are connected with the first chord member 20-1-1, the two ends of the second layer are connected with the second chord member 20-1-2, owing to there is two-layer web member, therefore structural strength and load-carrying capacity are higher than a kind of mode, but too much web member not only can increase manufacture difficulty and material cost, and it is excessive that jib can be caused to conduct oneself with dignity, therefore, comprehensively, first kind of way is more suitable.
In addition, not only can be connected by floor between chord member, suitable spacing also can be kept only to be connected by link at two ends.
Please refer to Fig. 8, Fig. 8 is the schematic cross-section of the second detailed description of the invention of heavier-duty jib provided by the present invention.
As shown in the figure, identical with the first detailed description of the invention above-mentioned, each main chord 20-1 of this heavier-duty jib also comprises two chord members be arranged in parallel respectively, difference is just, two chord members along short transverse longitudinal arrangement, and to be welded to connect by longitudinal floor, because chord member quantity increases on cross-sectional plane, therefore load-carrying capacity also significantly promotes thereupon, and the arrangement of its web member specifically can with reference to description above.
Please refer to Fig. 9, Fig. 9 is the schematic cross-section of the third detailed description of the invention of heavier-duty jib provided by the present invention.
As shown in the figure, each main chord 20-1 of this heavier-duty jib comprises three chord members be arranged in parallel respectively, and wherein the first chord member 20-1-1 is positioned at corner point on cross-sectional plane; Second chord member 20-1-2 and the first chord member 20-1-1 along short transverse longitudinal arrangement, and is welded to connect by longitudinal floor; 3rd chord member 20-1-3 and the first chord member 20-1-1 broad ways transversely arranged, and to be welded to connect by horizontal floor; Be welded to connect by oblique floor between second chord member 20-1-2 and the 3rd chord member 20-1-3.
The two ends of intermediate arm left and right web member 20-2-2 are connected with the second chord member 20-1-2, and the two ends of upper and lower web member 20-2-1 are connected with the 3rd chord member 20-1-3, and the circle center line connecting of three strings bar is triangular in shape, has very firmly stability.
Please refer to Figure 10, Figure 10 is the schematic cross-section of the 4th kind of detailed description of the invention of heavier-duty jib provided by the present invention.
As shown in the figure, each main chord 20-1 of this heavier-duty jib comprises four chord members be arranged in parallel respectively, and four chord members broad ways on cross-sectional plane divides two row transversely arranged (also can be understood as longitudinal arrangement in two separate ranks), the left and right web member of intermediate arm and upper and lower web member, specifically can with reference to descriptions above all between the chord member of outside.
The chord member of each main chord of above-mentioned intermediate arm adopts solid drawn pipe manufacture, can be pipe, square tube, rectangular tube or other shape tube, and wherein round chord member part opposing flexion capabilities is strong, air draught is little, and the transmission of rod member joint power is more stable.
Certainly, except intermediate arm 20, coxopodite arm 10 and epimerite arm 30 also can be strengthened by same mode, due to the four chord member space trusses that coxopodite arm 10 and epimerite arm 30 are variable section, therefore on concrete structure, understand some trickle change, those skilled in the art can design according to practical structures.
From telescopic boom section analysis, by the specification of combined type main chord and the optimal combination of telescopic boom section size, under the prerequisite meeting transportation clearance requirement, greatly can improve the load-carrying capacity of jib, single chord member specification simultaneously in combined type main chord, reduce than an existing main chord specification, its blanking difficulty of processing reduces greatly.In addition, compared with existing build-up type jib, it is produced and assembly difficulty reduces greatly, and assembling and Practical Performance improve greatly.
Here it should be noted that, the present invention is to provide the jib that a kind of main chord has many chord members to be composited, the actual size of its each chord member is relevant to factors such as hoisting crane rated load, nominal loads, and designer can calculate accurately according to jib design cycle and control, and is not specifically limited here.
In addition, herein the quantity of jib intermediate arm is not also limited, according to the difference of crane load ability, can increase further or reduce.
The complex method of above-mentioned four kinds of main chords is only preferred version, and its concrete structure is not limited thereto, and can make pointed adjustment on this basis according to actual conditions, thus obtains different heavier-duty jibs.Because mode in the cards is more, be save length, casehistory no longer one by one herein.
Please refer to Figure 11, Figure 11 is the structural representation of a kind of detailed description of the invention of hoisting crane provided by the present invention.
Except above-mentioned integral type jib, present invention also offers a kind of hoisting crane, comprise assembly 40 of getting off, super-starting balance weight 50, jib 60 and surpassed mast 70, coxopodite arm and the described turntable of getting off assembly 40 of described jib 60 are hinged, described jib 60 specifically adopts heavier-duty jib structure mentioned above, can realize hoisting, luffing, revolution and band carry the whole action of walking, at utmost embody its Practical Performance, all the other structures refer to prior art, repeat no more herein.
Above-mentioned hoisting crane is specifically as follows super-tonnage crane, adopt crawler belt or rubber-tyred running gear that technology maturation is stable, not only controller performance and safety performance can effectively be ensured, and grounding pressure is little, ground environment comformability is extremely strong, can not increase extra design and use expense.
Above hoisting crane provided by the present invention and heavier-duty jib are described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands core concept of the present invention for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1. a heavier-duty jib, comprise coxopodite arm, epimerite arm and at least one joint intermediate arm between described coxopodite arm and epimerite arm, each described intermediate arm is truss structure, comprise main chord and the web member between main chord, it is characterized in that, each described main chord comprises three chord members be arranged in parallel respectively, wherein the first chord member is positioned at corner point on cross-sectional plane, second chord member and described first chord member along short transverse longitudinal arrangement, the 3rd chord member and described first chord member broad ways transversely arranged.
2. heavier-duty jib according to claim 1, is characterized in that, is welded to connect between the chord member of each described main chord by floor.
3. heavier-duty jib according to claim 2, is characterized in that, by bolt or pinned connection between the intermediate arm that described coxopodite arm is adjacent, between intermediate arm and between the intermediate arm that is adjacent of epimerite arm.
4. heavier-duty jib according to claim 3, is characterized in that, chord member rounded or rectangle on cross-sectional plane of each described main chord.
5. a heavier-duty jib, comprise coxopodite arm, epimerite arm and at least one joint intermediate arm between described coxopodite arm and epimerite arm, each described intermediate arm is truss structure, comprise main chord and the web member between main chord, it is characterized in that, each described main chord comprises four chord members be arranged in parallel respectively, and described chord member broad ways on cross-sectional plane divides two row transversely arranged.
6. heavier-duty jib according to claim 5, is characterized in that, is welded to connect between the chord member of each described main chord by floor.
7. heavier-duty jib according to claim 6, is characterized in that, by bolt or pinned connection between the intermediate arm that described coxopodite arm is adjacent, between intermediate arm and between the intermediate arm that is adjacent of epimerite arm.
8. heavier-duty jib according to claim 7, is characterized in that, chord member rounded or rectangle on cross-sectional plane of each described main chord.
9. a hoisting crane, comprise assembly of getting off, super-starting balance weight, jib and surpassed mast, the coxopodite arm of described jib and the turntable of described assembly of getting off are hinged, and it is characterized in that, described jib is specially the heavier-duty jib described in any one of the claims 1 to 8.
10. hoisting crane according to claim 9, is characterized in that, is specially super-tonnage crawler crane or wheel-mounted crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110062601.1A CN102674168B (en) | 2011-03-15 | 2011-03-15 | Reinforced boom and crane with reinforced boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110062601.1A CN102674168B (en) | 2011-03-15 | 2011-03-15 | Reinforced boom and crane with reinforced boom |
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| Publication Number | Publication Date |
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| CN102674168A CN102674168A (en) | 2012-09-19 |
| CN102674168B true CN102674168B (en) | 2015-04-22 |
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| CN201110062601.1A Active CN102674168B (en) | 2011-03-15 | 2011-03-15 | Reinforced boom and crane with reinforced boom |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105705453B (en) * | 2013-11-08 | 2018-06-05 | 伊特里克公司 | Crane boom segment for assembling a crane boom and method for assembling a crane boom |
| CN104988898A (en) * | 2015-07-10 | 2015-10-21 | 杨崇庆 | Cantilever crane device for track type dynamic compactor |
| CN105600688A (en) * | 2015-11-17 | 2016-05-25 | 徐工集团工程机械股份有限公司 | Jib and crane |
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| CN201999659U (en) * | 2011-03-15 | 2011-10-05 | 徐工集团工程机械股份有限公司建设机械分公司 | Strengthened jib support and crane with same |
| CN102249161A (en) * | 2010-05-21 | 2011-11-23 | 上海三一科技有限公司 | Multi-main-chord arm support for crane |
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| FR2556377B1 (en) * | 1983-12-07 | 1986-10-24 | Bouygues Sa | BRIDGE MESH, BRIDGE TRUNK COMPRISING SUCH LATTICE AND METHOD FOR CONSTRUCTING THE BRIDGE |
| US8037658B2 (en) * | 2009-01-08 | 2011-10-18 | Kundel Industries, Inc. | Structural members for forming various composite structures |
| JP2010254398A (en) * | 2009-04-22 | 2010-11-11 | Kobe Steel Ltd | Lattice boom of crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3249238A (en) * | 1964-02-14 | 1966-05-03 | Bucyrus Erie Co | Boom comprised of sections of differing cross section having aligned elastic centers |
| CN201211999Y (en) * | 2008-02-04 | 2009-03-25 | 苏州江南嘉捷电梯股份有限公司 | Large span escalator truss and large span escalator formed thereby |
| CN201619972U (en) * | 2009-12-15 | 2010-11-03 | 大连益利亚工程机械有限公司 | Caterpillar crane provided with caterpillar type super-hoisting counterweight car |
| CN102249161A (en) * | 2010-05-21 | 2011-11-23 | 上海三一科技有限公司 | Multi-main-chord arm support for crane |
| CN201999659U (en) * | 2011-03-15 | 2011-10-05 | 徐工集团工程机械股份有限公司建设机械分公司 | Strengthened jib support and crane with same |
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