CN105600688A - Jib and crane - Google Patents
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- CN105600688A CN105600688A CN201510788785.8A CN201510788785A CN105600688A CN 105600688 A CN105600688 A CN 105600688A CN 201510788785 A CN201510788785 A CN 201510788785A CN 105600688 A CN105600688 A CN 105600688A
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Abstract
The invention discloses a jib and a crane. The jib comprises a jib main body and jib additional bodies; the jib main body is of a space truss structure, wherein at least one side face of the jib main body is detachably connected with one jib additional body; or, at least one side face of the jib main body is detachably connected with more than two stacked jib additional bodies. The jib additional bodies can be detachably connected with the jib main body; on a basis without changing the structure of the jib main body, the jib additional bodies can be increased according to the actual demand, to meet the requirements of hoisting equipment on the jib bearing capacity. Moreover, during transportation, the jib additional bodies can be detached with the jib main body and is transported alone according to the requirements of transportation size and transportation weight. Therefore, the jib of the embodiment not only can ensure the jib sufficient bearing capacity, but also can meet the requirements of transportation.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of jib and crane.
Background technology
Along with the fast development of international energy and chemical engineering construction field, modularization in engineering,Maximization and integrated lifting requirements improve constantly, and crane gear lifting capacity and hoisting moment are carriedGo out higher requirement. Jib is as the main bearing member of crane gear, the structure shape of himselfThe characteristic such as formula, bearing capacity directly affects serviceability and the lifting performance of complete machine.
As shown in Figure 1, the jib of crane gear of the prior art generally adopts by four main stringsThe truss structure that bar 111 and 112 weldings of some web members form. From stressed aspect, jibBelong to Bi--directional Compression--Flexure member, when crane gear hangs the work of carrying, jib is flat at the luffing of craneIn face and plane of rotation, all bear the effect of axial force and moment of flexure, therefore from jib cross-section analysis,Need enough sectional areas, to ensure jib cross-sectional strength, thus the effect of opposing axial force,As shown in Figure 2, need enough cross-sectional width B and height H to ensure in two planesThe moment of inertia, thereby the effect of opposing moment of flexure. In order to improve the bearing capacity of jib, need to increaseThe specification of main chord 111 and the sectional dimension of jib, and the restriction of the high speed width of road transportSeriously restrict the increase in its cross section, therefore should ensure the bearing capacity that jib is enough, againMeet transportation clearance requirement, how solving this becomes crane gear to contradiction and develops to ultra-large typeA key issue.
In order to strengthen the bearing capacity of crane gear jib self, available technology adopting two kindsTechnical scheme:
The first scheme is the sectional dimension that increases jib, improves material specification and material that jib is usedMatter.
First scheme is compound main chord formula jib as shown in Figure 3. Compound main chord formula armFrame adopts compound main chord 111. For example, as shown in Figure 4 and Figure 5, by two main chord shapesThe compound main chord 111 becoming replaces an original main chord; Or, as shown in Figure 6, byThe compound main chord 111 of three main chord formation replaces an original main chord; Again for example,As shown in Figure 7, the multiple full main chord 111 being formed by four main chords replaces an original masterChord member. In Fig. 3 to Fig. 7, between each compound main chord 111, pass through web member 112 or webDirectly be welded to connect the compound main chord formula jib that forms integral solder.
Although first scheme has solved the problem that improves jib bearing capacity to a certain extent,Can not meet transportation clearance requirement and can not carry out according to actual lifting condition but also existThe problem regulating. Be described as follows: sectional dimension and the material specification of jib are subject to transportation clearanceAnd the impossible unlimited increase of hauled weight restriction; Improve material and increase cost, to material selfHave relatively high expectations, and it is limited to the lifting of jib bearing capacity to improve material; Compound main chord formula jibVersion complexity, therefore processing technology is had relatively high expectations; Between each main chord, be an entirety,Therefore the quantity of main chord can not unconfinedly increase, thereby the bearing capacity of jib self promotesAlso very limited; Between each main chord of compound main chord formula jib, web member, be a welding integral,The weight of himself cannot lift demand and lifting condition regulates, the weight of self according to realityAmount cannot reach good mating with overall performance, even can make the hydraulic performance decline of complete machine.
Summary of the invention
The object of the present invention is to provide a kind of jib and crane, of the prior art to solveWhat jib existed can not only ensure the bearing capacity of jib but also meet the problem that transportation clearance requires.
To achieve these goals, a first aspect of the present invention provides a kind of jib, comprises jibMain body and jib episome, jib main body is space truss structure, wherein, jib main body is extremelyOn a few side, removably connect a jib episome; Or jib main body at leastOn a side, removably connect two above stacked jib episomes.
Further, jib episome is truss structural.
Further, the parallel sided of jib episome and corresponding connection.
Further, at least one side comprises that the luffing of the crane that is parallel to jib place is flatThe first side of face and/or perpendicular to the second side of luffing plane.
Further, jib episome is integral solder structure.
Further, integral solder structure comprise spaced two episome main chords and withTwo many episome web members that episome main chord is welded to connect.
Further, jib main body is integral solder structure, or described jib main body comprises thatMultiple split Welding Structures of this connection.
Further, jib main body comprises at least two splits extending longitudinally along jib main bodyWelding Structure, at least two split Welding Structures are removably connected to form space truss structure.
Further, jib main body comprises two split Welding Structures, two split Welding StructuresIn each split Welding Structure comprise main body main chord and be welded in accordingly on main body main chordMany main body web members, many main body web members comprise many connection web members, two splits welding knotStructure removably connects by connection web member separately and forms space truss structure.
Further, corresponding to one group between two of many connection web member on same main body main chordThe multiple connection web member of formation group, wherein, each connection web member group and corresponding main body main chordForm triangular structure.
Further, each split Welding Structure also comprises setting corresponding to described triangular structureMultiple connecting portions, each described connecting portion, described connecting portion is arranged at corresponding triangular structureThe bight being formed by connection web member group, two welded connection web members of split pass through separatelyConnecting portion removably connects.
Further, respectively connect between web member group and corresponding main body mobile jib string and form with this main bodyMain chord is the congruent triangular structure of right angle of right-angle side, or, respectively connect web member group and rightBetween the main body mobile jib string of answering, form the congruent isoceles triangle taking this main body main chord as baseShape structure.
Further, jib main body comprises two symmetrically arranged split Welding Structures.
Further, two split Welding Structures are positioned at the each connection abdomen on same side after connectingBar forms multiple K type structures that are arranged side by side or forms multiple X-type structures that are arranged side by side.
Another aspect of the present invention provides a kind of crane, comprises jib as above.
Based on jib provided by the invention, comprise jib main body and jib episome, jib main bodyFor space truss structure, wherein, at least one side of jib main body, removably connect oneIndividual jib episome; Or, at least one side of jib main body, removably connect twoStacked jib episome above. Jib episome is removably connected with jib main body, notChange on the basis of this body structure of jib main body, can be according to the actual requirements, by increasing jibEpisome, to meet the requirement of crane gear to jib bearing capacity. And in the time of transport, canWith according to the requirement of transportation clearance and hauled weight, jib episome and jib main body are split,Transport separately, therefore, the jib of the embodiment of the present invention had both ensured the bearing capacity that jib is enough,Can meet again movement requirement.
By the detailed description to exemplary embodiment of the present invention referring to accompanying drawing, the present inventionFurther feature and advantage thereof will become clear.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the applicationA part, schematic description and description of the present invention is used for explaining the present invention, not structureBecome inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the front view structural representation of the jib of prior art;
Fig. 2 is the side view structural representation of jib in Fig. 1;
Fig. 3 is the front view structural representation of the compound main chord formula jib of prior art;
Fig. 4 is that the A-A of the compound main chord formula jib in Fig. 3 is to sectional structure schematic diagram;
Fig. 5 is the cross-sectional structure schematic diagram of the first scheme of compound main chord formula jib;
Fig. 6 is the structural representation of the third scheme of compound main chord formula jib;
Fig. 7 is the cross-sectional structure schematic diagram of the 4th kind of scheme of compound main chord formula jib;
Fig. 8 is the structural representation of the jib in first embodiment of the invention;
Fig. 9 is the episomal stereochemical structure signal of jib in the jib of first embodiment of the inventionFigure;
Figure 10 is the structural representation of jib main body in the jib in first embodiment of the invention;
Figure 11 is that the B-B of the jib shown in Fig. 8 is to sectional structure schematic diagram;
Figure 12 is the cross-sectional structure schematic diagram of second embodiment of the invention;
Figure 13 is the cross-sectional structure schematic diagram of third embodiment of the invention;
Figure 14 is the structural representation of jib main body in the jib of fourth embodiment of the invention;
Figure 15 is the welded structural representation of split of the jib main body shown in Figure 14;
Figure 16 is the structural representation after the split Welding Structure of the jib main body shown in Figure 14 splitsFigure;
Figure 17 is one of them split Welding Structure upset 180 of the jib main body shown in Figure 14The structural representation of degree;
Figure 18 is the structural representation of the travel position of the jib main body shown in Figure 14;
Figure 19 is the structural representation of jib main body in the jib of fifth embodiment of the invention;
Figure 20 is the welded structural representation of split of the jib main body shown in Figure 19;
Figure 21 is the structural representation after the split Welding Structure of the jib main body shown in Figure 19 splitsFigure;
Figure 22 is one of them split Welding Structure upset 180 of the jib main body shown in Figure 19The structural representation of degree;
Figure 23 is the structural representation of the travel position of the jib main body shown in Figure 19.
Each Reference numeral represents respectively:
111-main chord; 112-web member; 2-jib main body; 21-split Welding Structure; 211-masterBody main chord; 212-main body web member; 212A-connects web member; 213-connecting portion; 5-jib is attachedAdd body; 511-episome main chord; 512-episome web member; 7-jockey.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present inventionCase is clearly and completely described, and obviously, described embodiment is only one of the present inventionDivide embodiment, instead of whole embodiment. Retouching at least one exemplary embodiment belowIt is illustrative stating only actually, never any as to the present invention and application or useRestriction. Based on the embodiment in the present invention, those of ordinary skill in the art are not making creationThe every other embodiment obtaining under property work prerequisite, belongs to the scope of protection of the invention.
Unless illustrate in addition, otherwise the parts of setting forth in these embodiments and the phase of stepLayout, numeral expression formula and numerical value are not limited the scope of the invention. Meanwhile, it should be understood thatFor convenience of description, the size of the various piece shown in accompanying drawing is not according to actual ratioExample relation is drawn. For the known technology of person of ordinary skill in the relevant, method and apparatusMay not discuss in detail, but in suitable situation, described technology, method and apparatus should be byBe considered as authorizing a part for description. In all examples with discussing shown here, any toolIt is exemplary that body value should be construed as merely, instead of as restriction. Therefore, exemplary realityOther example of executing example can have different values. It should be noted that: similar label and letter existIn accompanying drawing below, represent similar terms, therefore, once in an a certain Xiang Yi accompanying drawing, be defined,In accompanying drawing subsequently, do not need it to be further discussed.
For convenience of description, here can usage space relative terms, as " ... on "," in ... top ", " at ... upper surface ", " above " etc., be used for describing as institute in the drawingsThe device showing or the spatial relation of feature and other devices or feature. Be to be understood thatThat space relative terms is intended to comprise making except the described in the drawings orientation of deviceWith or operation in different azimuth. For example, if the device in accompanying drawing is squeezed, be described asWill after the device of " above other devices or structure " or " on other devices or structure "Be positioned as " below other devices or structure " or " under other devices or structure ". CauseAnd, exemplary term " ... top " can comprise " ... top " and " ... below "Two kinds of orientation. This device also can other different modes location (90-degree rotation or in otherOrientation), and the space that used here is relatively described and made respective explanations.
To be specifically described various embodiments of the present invention to Figure 23 according to Fig. 8 below.
The jib of various embodiments of the present invention, comprises jib main body 2 and jib episome 5, jibMain body 2 is space truss structure, wherein, detachable at least one side of jib main body 2Ground connects a jib episome 5, or, removable at least one side of jib main body 2Connect two above stacked jib episomes 5 with unloading.
Jib episome 5 is removably connected with jib main body 2, is not changing jib main body 2On the basis of this body structure, can be according to the actual requirements, by increasing jib episome 5, withMeet the requirement of crane gear to jib bearing capacity. And in the time of transport, can be according to transportThe requirement of size and hauled weight, splits jib episome 5 and jib main body 2, separately fortuneDefeated, therefore, the jib of the embodiment of the present invention had both ensured the bearing capacity that jib is enough, again couldMeet movement requirement.
The jib of the first embodiment comprises jib main body 2 and jib episome 5. As shown in Figure 8,Jib episome 5 is connected with jib main body 2 by jockey 7.
The structure of the jib episome 5 of the first embodiment as shown in Figure 9, jib episome 5For the truss structural of integral solder structure. Jib attached frame body 5 is by two episome main chords511 and Duo Gen episome web member 512 be welded. It is simple in structure, and good manufacturability is producedDifficulty of processing is low.
In the time the jib of crane being carried out to performance boost improvement, only need to be at the base of original jibOn plinth, increase some jib episomes 5 and can obtain jib of the present invention, performance boost improves moreSimply, cost is lower.
If the cross section of jib episome 5 is excessive, also can be made fabricated construction. Enter oneStep ground improves the transport convenience of jib. In addition, in order to increase the intensity of jib episome 5,Do not get rid of jib episome 5 and itself make highly less space truss structure yet.
Figure 10 shows the structural representation of jib main body 2 in the jib of first embodiment of the inventionFigure. In the first embodiment, jib main body 2 is integral solder structure. Jib main body 2 is by leadingBody main chord 211 and main body web member 212 are welded.
Be in rectangular situation at the cross sectional shape of jib main body, four sides of jib main bodyIn, having two sides is the first side that is parallel to the luffing plane of the crane at jib place,Forward and backward side as shown in Figure 8, another two sides are the second side perpendicular to luffing plane,Upper and lower side as shown in Figure 8. In the first embodiment, only on two the second sides,On upper and lower two sides shown in Fig. 8, a jib episome 5 is installed separately. Preferably,The second parallel sided in the jib main body 2 of jib episome 5 connection corresponding to it.
Can lift demand and lifting condition according to reality, on the first side of jib main body orPerson removably connects jib episome 5 on the second side.
For example, in the second embodiment shown in Figure 12, only being parallel in jib main body 2On two the first sides of the luffing plane of crane, connect separately a jib episome 5.Preferably, the first parallel sided in the jib main body 2 of jib episome 5 connection corresponding to it.
Again for example, in the 3rd embodiment shown in Figure 13, be parallel to two of luffing planeOutside individual the first side and two the second sides perpendicular to luffing plane, all install separately oneJib episome 5.
The number of the jib episome 5 increasing on each side in addition, can be selected according to demandSelect, in the time that on each side, correspondence is installed multiple jib episome 5, the plurality of jib episome5 is stacked.
The assembled of jib episome 5 connects, and makes the rigidity of whole jib, lateral stabilityAll be improved with bending resistance, effectively improved stability and the stressing conditions of jib, carryThe bearing capacity of high jib, thereby the load-carrying ability of raising crane gear.
In the time of transport, can, according to the size of transport and the requirement of hauled weight, jib be addedBody 5 splits with jib main body 2, separately transport. Because jib episome 5 passes through jockey7 are removably connected with jib main body 2, make the transportation clearance of jib and hauled weight no longerBecome the factor of constraint jib own wt and bearing capacity, make the self-bearing capacity of jibCan promote according to demand.
Therefore, the jib of above each embodiment can meet the bearing capacity of jib, can meet againTransportation clearance requirement.
In the above first to the 3rd embodiment, jib main body is integral solder structure, butIn other embodiment, jib main body also can comprise multiple split Welding Structures. Preferably, armFrame body comprises at least two the split Welding Structures extending longitudinally along described jib main body, shouldAt least two split Welding Structures are removably connected to form described space truss structure.
As shown in figure 14, the jib main body 2 of the jib of fourth embodiment of the invention comprises as figure21, two split Welding Structures 21 of two split Welding Structures shown in 15 removably connectForm space truss structure.
As shown in figure 15, split Welding Structure 21 comprises main body main chord 211 and Duo Gen main bodyWeb member 212, many main body web members 212 are welded on main body main chord 211, wherein, as figureShown in 14, main body web member 212 comprises and connects web member 212A and strengthen web member. Wherein connect abdomenBar 212A is used for the corresponding connection of connection web member 212A with another split Welding Structure 21,Be used for the company between the welded different subjects main chord of same split and strengthen web memberConnect. In the first embodiment, each split Welding Structure 21 comprises two main body main chords, twoRoot main body main chord connects by many reinforcement web members.
As shown in figure 14, connect in web member 212A between two one group and form multiple connection web member groups,Each connection web member group and main body main chord 211 form triangular structure. Wherein, formThe bight away from main body main chord 211 of triangular structure is provided with connecting portion 213, split weldingThe connection web member 212A of structure 21 just can removably connect by connecting portion 213.
Therefore, two split Welding Structures 21 are detachable by connection web member 212A separatelyBe connected to form space truss structure likes.
The connection web member 212A of split Welding Structure in the present embodiment, 21 is by bearing pin phaseConnect.
In working order time, as shown in figure 14, two split Welding Structures 21 are symmetrical arranged.As can be seen from the figure, each connection web member 212A has just formed multiple X-types that are arranged side by sideStructure. The height of jib main body is now H1.
In the time of travel position, as shown in figure 16, connecting portion 213 is opened, and as Figure 17Shown in, one of them of two split Welding Structures 21 turned over to turnback longitudinal along jibThe certain distance that staggers as shown in figure 18, closes up two split Welding Structures 21 finally. ThisTime jib main body 2 height be H2, the height H 1 when H2 is less than jib body of work state,Therefore the shipping height of jib reduces, and then meets movement requirement.
In the present embodiment jib episome 5 with can join detachable connection of above-mentioned jib main body 2According to the structure and mode in first embodiment of the invention to the three embodiment.
As shown in Figure 19 and Figure 20, the jib main body 2 of the jib of the 5th embodiment also comprises twoIndividual split Welding Structure 21. Each split Welding Structure 21 comprises main body main chord 211, mainBody web member 212 and connecting portion 213.
Different from the jib main body of the 4th embodiment, the jib main body 2 of the 5th embodimentMultiple connection web member groups and main body main chord 211 between form taking main body main chord 211 as directlyThe right angled triangle of multiple congruences of the arm of angle, and then when two split Welding Structures 21 are by connectingConnect after web member 212A connects and just formed multiple K type structures that are arranged side by side. Now, jibHeight be H3.
In the time of travel position, as Figure 21, shown in Figure 22 and Figure 23, by two split welding knotsOne of them of structure 21 turned over turnback the certain distance that longitudinally staggers along jib main body 2,Then two split Welding Structures 21 are closed up. Under this state, the height of jib is H4. H4The height H 3 of the jib while being less than duty, and then short transverse meets fortune while making to transportDefeated requirement.
Unaccounted structure in the 5th embodiment, effect etc. all can be implemented with reference to the first to fourththThe related content of example.
Although the cross sectional shape of the jib main body of various embodiments of the present invention is rectangle, thisThe cross sectional shape of the jib main body of bright jib is not limited to this. For example, there is trapezoid cross sectionOr in the jib main body of triangular-section, jib episome can be set equally, i.e. the present invention withUpper each embodiment arranges the episomal technological means of jib and jib main body in jib main bodyThe technological means that can be set to the welded form of split is equally applicable to other cross section shapesThe jib main body of shape.
The present invention also provides a kind of crane, comprises the jib in above-described embodiment.
In summary, the jib tool of various embodiments of the present invention has the following advantages:
1, the transportation clearance of jib and hauled weight no longer become constraint jib own wt, fromThe factor of body bearing capacity, effectively promotes jib self-bearing capacity;
2, jib structure form is simple, has reduced frock and production difficulty;
3, the weight of jib self can lift demand and lifting condition regulates according to reality,Can make the weight of jib self reach good mating with crane overall performance, be unlikely to shadowRing the performance to complete machine;
4, the bearing capacity of jib self can lift demand and lifting condition is carried out according to realityRegulate, the bearing capacity of self can lift weight with reality and reach good mating, and makes armThe utilization rate of the bearing capacity of frame is improved;
5, the bearing capacity of jib can also reach good mating with the overall performance of crane,Make the performance of overall performance and jib self obtain good utilization;
6, in the time that crane carries out performance boost improvement, only need on original jib basis, increaseSome jib episomes, performance boost improves simply, cost is low;
7, in jib, the specification of single main chord reduces than the specification of an original main chord, itsBlanking difficulty of processing reduces, and also makes the performance utilization rate of main chord self be improved.
Finally should be noted that: above embodiment is only in order to illustrate technical scheme of the present inventionNon-to its restriction; Although the present invention is had been described in detail with reference to preferred embodiment, underThe those of ordinary skill in field is to be understood that: still can enter the specific embodiment of the present inventionRow is revised or part technical characterictic is equal to replacement; And do not depart from technical solution of the present inventionSpirit, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (15)
1. a jib, is characterized in that, comprises jib main body and jib episome, described inJib main body is space truss structure, wherein, and can at least one side of described jib main bodyDismounting ground connects a described jib episome, or at least one side of described jib main bodyOn removably connect two above stacked described jib episomes.
2. jib according to claim 1, is characterized in that, described jib episomeFor truss structural.
3. jib according to claim 1, is characterized in that, described jib episomeDescribed parallel sided with corresponding connection.
4. jib according to claim 1, is characterized in that, described at least one sideFace comprise the crane that is parallel to described jib place luffing plane the first side and/or hang downStraight in the second side of described luffing plane.
5. jib according to claim 1, is characterized in that, described jib episomeFor integral solder structure.
6. jib according to claim 5, is characterized in that, described integral solder knotStructure comprises spaced two episome main chords and welds with described two episome main chordsMany episome web members that connect.
7. jib according to claim 1, is characterized in that, described jib main body isIntegral solder structure, or described jib main body comprises multiple split Welding Structures.
8. jib according to claim 7, is characterized in that, described jib main body bagDraw together at least two the split Welding Structures extending longitudinally along described jib main body, described at least twoIndividual split Welding Structure is removably connected to form described space truss structure.
9. jib according to claim 8, is characterized in that, described jib main body bagDraw together two described split Welding Structures, each split welding knot in described two split Welding StructuresStructure comprises main body main chord and is welded in accordingly many main body abdomens on described main body main chordBar, described many main body web members comprise many connection web members, described two split Welding Structures are logicalCrossing connection web member separately removably connects and forms described space truss structure.
10. jib according to claim 9, is characterized in that, corresponding to same instituteState the many described connection web members multiple connection web members of formation of a group between two on main body main chordGroup, wherein, each described connection web member group forms triangle with corresponding described main body main chordStructure.
11. jibs according to claim 10, is characterized in that, each described split weldingStructure also comprises multiple connecting portions of setting corresponding to described triangular structure, each described connecting portionBe arranged at the bight being formed by described connection web member group of corresponding described triangular structure, described inTwo welded connection web members of split removably connect by described connecting portion separately.
12. jibs according to claim 10, is characterized in that, each described connection web memberThe congruence of formation taking this main body main chord as right-angle side between group and corresponding described main body mobile jib stringTriangular structure of right angle, or, each described connection web member group and corresponding described main body mobile jibBetween string, form the congruent isosceles triangular structure taking this main body main chord as base.
13. jibs according to claim 9, is characterized in that, described jib main body bagDraw together two symmetrically arranged described split Welding Structures.
Jib in 14. according to Claim 8 to 13 described in any one, is characterized in that, twoThe each described connection web member being positioned on same side after individual described split Welding Structure connects forms manyThe individual K type structure being arranged side by side or form multiple X-type structures that are arranged side by side.
15. 1 kinds of cranes, is characterized in that, comprise any one institute in claim 1 to 14The jib of stating.
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Application publication date: 20160525 |
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| RJ01 | Rejection of invention patent application after publication |