CN201952138U - Integral arm support and crane comprising same - Google Patents
Integral arm support and crane comprising same Download PDFInfo
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- CN201952138U CN201952138U CN2011200580615U CN201120058061U CN201952138U CN 201952138 U CN201952138 U CN 201952138U CN 2011200580615 U CN2011200580615 U CN 2011200580615U CN 201120058061 U CN201120058061 U CN 201120058061U CN 201952138 U CN201952138 U CN 201952138U
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- arm
- jib
- intermediate arm
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Abstract
The utility model discloses an integral arm support, which comprises a bottom knuckle arm, a top knuckle arm and at least one middle arm located between the bottom knuckle arm and the top knuckle arm, wherein the dimensions of the cross sections of all the middle arms are equal; the middle arms are of truss type structures; each middle arm comprises four main chord members and web members located among the four main chord members; and the cross sections of the web members are longer than the main chord members. The arm support not only has enough carrying capacity but also is capable of meeting the requirement of transportation clearance, and a favorable condition is provided for a crane to be developed to an extra large size. The utility model also discloses the crane comprising the integral arm support.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly relates to the jib of hoisting crane.The utility model also relates to the hoisting crane that is provided with described jib.
Background technology
At present, for satisfying in the heavy construction projects such as domestic petroleum, petrochemical industry, nuclear power, wind-powered electricity generation, iron and steel lifting demand to super large equipment, hoisting crane more and more develops to ultra-large type, its lifting altitude is higher, work range is bigger, load-carrying ability is stronger, meanwhile, brought a series of problems also for 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 scheme drawing of existing crawler crane; Fig. 2 is the birds-eye view of jib shown in Figure 1; Fig. 3 is the structural representation of the single-unit intermediate arm of jib shown in Figure 1; Fig. 4 is the end view of intermediate arm shown in Figure 3.
As shown in the figure, jib is one of important component of hoisting crane, the general truss structure of forming by main chord 4 and web member 5 that adopts of the jib of crawler crane, comprise coxopodite arm 1, intermediate arm 2, epimerite arm 3, adopt bearing pin to connect between each joint, realize different brachium combinations, consider stack-mounted comfort feature and different operating mode needs by the quantity that increases and decreases intermediate arm 2, the intermediate arm length L is generally longer, as 6m, 9m or 12m.
From stressed aspect, jib belongs to two-way bending component, be that hoisting crane hangs when carrying work, jib all bears the effect of axial force and moment of flexure in luffing plane and plane of rotation, therefore from the jib cross-section analysis, need enough sectional areas, to guarantee the jib cross-sectional strength, thereby the effect of opposing axial force needs enough section width B and height H guaranteeing two moment of inertias in the plane, thereby the effect of opposing moment of flexure.In order to improve the load-carrying capacity of jib, the most effective way is exactly the sectional dimension that increases jib, and the limitation in height of the transport vehicle and the culvert of passing by on one's way is seriously restricting the increase in cross section.
In order to realize the lifting of super-tonnage equipment, present stage mainly contains following several solution:
First kind of scheme adopts the multi-machine collaborative operation, promptly lifts by crane simultaneously with many middle-size and small-size hoisting cranes, finishes the lifting task of super large equipment jointly.In this case, very high to the synchronism requirement of many hoisting cranes, because every hoisting crane all is furnished with independent control system, add the problem of load distribution, the pre-degree of the safety of on-the-spot multi-machine collaborative operation is difficult to assurance, and danger is very big; And in this case, can only bring into play 60%～80% of crane loading ability, the performance degree of utilization is low.
Second kind of scheme used various nonstandard type hoisting cranes, and be promptly simple in order to obtain big load-carrying ability, and custom-designed hoisting crane, common this hoisting crane is arranged on the circuit orbit, and super-starting balance weight maintains static, and has superpower hoisting moment, but car load can only be the center with the 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, influences construction speed.In addition, circuit orbit is high to ground-surface requirement for bearing capacity, need usually in advance special processing to be carried out on ground, thus the outer additional expense of amount paid.
The third scheme, a large amount of utilizations split assembly technique, and parts that exceed transportation request are split into several widgets, couple together by assembling again.Build-up type jib in for example existing scheme is about to the main chord and web member fractionation of jib, and to satisfy transportation request, cutting to is assembled into one with web member and main chord by bearing pin after in place again.Generally, 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 increase assembling cycle greatly, reduce service efficiency, the increase that the application of simultaneously a large amount of assembly techniques also can bring production difficulty and design cost.
Therefore, how guaranteeing that jib had both had enough load-carrying capacitys, can satisfy the transportation clearance requirement again, is the present technical issues that need to address of those skilled in the art.
The utility model content
First purpose of the present utility model provides a kind of integral type jib.This jib had both had enough load-carrying capacitys, can satisfy the transportation clearance requirement again, for hoisting crane provides advantage to the ultra-large type development.
Second purpose of the present utility model provides a kind of hoisting crane that is provided with above-mentioned jib.
In order to realize above-mentioned first purpose, the utility model provides a kind of integral type jib, comprise coxopodite arm, epimerite arm and at least one joint intermediate arm between described coxopodite arm and epimerite arm, the cross sectional dimensions of each described intermediate arm equates that the cross-sectional width of described intermediate arm is greater than the length of described intermediate arm.
Preferably, described intermediate arm is a truss structure, comprises four main chords and the web member between main chord, and its cross-sectional width is greater than described main chord length.
Preferably, the cross-sectional width scope of described intermediate arm is 5m-9m.
Preferably, the maxim of described main chord length is 3.5m.
Preferably, the maxim of the cross-sectional height of described intermediate arm is 3.5m.
Preferably, rounded on cross-sectional plane, square of described main chord or rectangle.
Preferably, between the intermediate arm that described coxopodite arm is adjacent, connect by bolt or bearing pin between the intermediate arm and between the intermediate arm that is adjacent of epimerite arm.
Preferably, the quantitative range of described intermediate arm is the 10-40 joint.
In order to realize above-mentioned second purpose, the utility model also provides a kind of hoisting crane, comprise the assembly of getting off, super-starting balance weight, jib and surpassed mast, the coxopodite arm of described jib and the turntable of the described assembly of getting off are hinged, and described jib is specially above-mentioned each described integral type jib.
Preferably, be specially super-tonnage crawler crane or wheel-mounted crane.
The utility model is broken through traditional design mode, a kind of novel jib structure is provided, whole jib is made up of coxopodite arm, intermediate arm and epimerite arm, each saves and can adopt high strength bolt or bearing pin to connect between the arm, difference is greater than its length with regard to the cross-sectional width that is described intermediate arm, and promptly intermediate arm is the one-piece construction of " the little length in heavy in section ".From the jib cross-section analysis, the cross sectional dimensions of increase can effectively guarantee required moment of inertia in the jib plane of rotation, can effectively guarantee the moment of inertia in jib intensity and the luffing plane simultaneously, improves its load-carrying capacity; Simultaneously, the lateral dimension of described intermediate arm is further dwindled, can be with the Width of jib length direction during as transportation, thereby satisfy the transportation clearance requirement.
In addition, though under the situation of identical jib length combination, the quantity of required intermediate arm is more than existing jib, compares with existing build-up type jib, and its production and assembly difficulty reduce greatly, and assembling and Practical Performance improve greatly.
In a kind of specific embodiment, adopt high strength bolt to connect between each joint of described this jib, its weight alleviates greatly, and the transmission of load between each joint when being beneficial to jib work more meets the strained condition of member reality; And adopting bearing pin to connect, technology maturation is stable, can improve efficiency of assembling.
Hoisting crane provided by the utility model is provided with above-mentioned integral type jib, because above-mentioned integral type jib has above-mentioned technique effect, the hoisting crane with this integral type jib also should possess the corresponding techniques effect.
Description of drawings
Fig. 1 is the jib structure scheme drawing of existing crawler crane;
Fig. 2 is the birds-eye view of jib shown in Figure 1;
Fig. 3 is the structural representation of the single-unit intermediate arm of jib shown in Figure 1;
Fig. 4 is the end view of intermediate arm shown in Figure 3;
Fig. 5 provides the structural representation of a kind of specific embodiment of integral type jib for the utility model;
Fig. 6 is the birds-eye view of integral type jib shown in Figure 5;
Fig. 7 is the structural representation of the single-unit intermediate arm of integral type jib shown in Figure 5;
Fig. 8 is the end view of intermediate arm shown in Figure 7;
Fig. 9 is the structural representation of a kind of specific embodiment of hoisting crane that the utility model provides.
Among Fig. 1 to Fig. 4:
1. coxopodite arm 2. intermediate arms 3. epimerite arms 4. main chords 5. web members
Among Fig. 5 to Fig. 9:
10. coxopodite arm 20. intermediate arms 30. epimerite arm 20-1. main chord 20-2 web members 40. assembly 50. super-starting balance weights 60. jibs of getting off 70. have surpassed mast
The specific embodiment
Core of the present utility model is to provide a kind of integral type jib.This jib had both had enough load-carrying capacitys, can satisfy the transportation clearance requirement again, for hoisting crane provides advantage to the ultra-large type development.
Another core of the present utility model provides a kind of hoisting crane that is provided with above-mentioned jib.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Terms such as herein " first, second " only is for convenience of description, with the different constituent elementss that differentiation has same names, does not represent successively or the primary and secondary relation.
Please refer to Fig. 5, Fig. 6, Fig. 5 provides the structural representation of a kind of specific embodiment of integral type jib for the utility model; Fig. 6 is the birds-eye view of integral type jib shown in Figure 5.
In a kind of specific embodiment, the integral type jib that the utility model provides belongs to truss structure, mainly is made up of parts such as coxopodite arm 10, more piece intermediate arm 20 and epimerite arms 30, and the cross sectional dimensions of each intermediate arm 20 equates.
Each intermediate arm 20 is formed by four main chord 20-1 and the some web member 20-2 between main chord, wherein, first intermediate arm, second intermediate arm, the 3rd intermediate arm is rectangular on cross-sectional plane until the 13 intermediate arm, has identical space sectional dimension, coxopodite arm 10, epimerite arm 30 is four chord member space trusses of variable section, the main chord 20-1 and the web member 20-2 of intermediate arm 20 mainly adopt the solid drawn pipe manufacturing, main chord 20-1 can be a pipe, square tube, rectangular tube or other shape tube, wherein pipe rod member opposing flexion capabilities is strong, air draught is little, and the transmission of rod member joint power is more stable.
The main chord end of above-mentioned coxopodite arm 10, intermediate arm 20 and epimerite arm 30 is equipped with butt flange, after the flange butt joint, connect by high strength bolt between any two, its weight alleviates greatly, be beneficial to the transmission of load between jib each joint of when work more, meet the strained condition of member reality.Certainly, except by flange arrangement with bolt is connected, each saves between the arm and can also connect by bearing pin, compares with bolted connection, bearing pin bonded assembly technology maturation is stable, can improve efficiency of assembling.
Please refer to Fig. 7, Fig. 8, Fig. 7 is the structural representation of the single-unit intermediate arm of integral type jib shown in Figure 5; Fig. 8 is the end view of intermediate arm shown in Figure 7.
The cross-sectional width B1 of intermediate arm 20 is greater than the length L 1 of its main chord, one-piece construction for " the little length in heavy in section ", the scope of its cross-sectional width B1 can be controlled in 5m-9m, and the maxim of cross-sectional height H1 is 3.5m, and the maxim of main chord length L 1 is 3.5m.
From the jib cross-section analysis, the cross sectional dimensions of increase can effectively guarantee required moment of inertia in the jib plane of rotation, can effectively guarantee the moment of inertia in jib intensity and the luffing plane simultaneously, improves its load-carrying capacity; Simultaneously, the maxim of intermediate arm lateral dimension is 3.5m * 3.5m=12.25m
2, satisfy the dimensional characteristic of transport vehicle and culvert, can be with the Width of jib length direction during as transportation, need not disassembled for transport.
Compare with existing build-up type jib, though under the situation of identical jib length combination, the quantity of required intermediate arm is more than existing jib, and its production and assembly difficulty reduce greatly, and assembling and Practical Performance improve greatly.
Here need to prove, the utility model provides the big and less jib of longitudinal length of a kind of transverse width, the developed width of its each intermediate arm and length are relevant with factors such as hoisting crane rated load, nominal loads, the designer can calculate accurately and control according to the jib design cycle, does not do concrete qualification here.
In addition, this paper does not do qualification to the quantity of jib intermediate arm yet, according to the difference of hoisting crane load-carrying capacity, can further increase or reduce, and specifically can be controlled in the 10-40 joint.
The cross sectional shape of above-mentioned intermediate arm 20 and main chord 20-1 thereof only is a kind of preferred version, and its concrete structure is not limited thereto, and can make pointed adjustment according to actual conditions on this basis, thereby obtains different integral type jibs.Because mode in the cards is more, be to save length, this paper is casehistory no longer one by one just.
Integral type jib that the utility model is provided and existing jib shown in Figure 1 compare to be not difficult to find, from in form, the intermediate arm 20 of above-mentioned integral type jib be equivalent to will existing jib intermediate arm 2 transfer turn 90 degrees after butt joint successively again, it is the lateral dimension that the cross sectional dimensions of above-mentioned intermediate arm is equivalent to existing intermediate arm, the lateral dimension of above-mentioned intermediate arm then is equivalent to the cross sectional dimensions of existing intermediate arm, and in fact, be not simply to turn installation.
Specifically, if the length of existing intermediate arm is L, the width of cross-sectional plane is B, highly for H, generally the value of L is between 6-12m, for satisfying transport vehicle and the dimensional characteristic of the culvert of passing by on one's way, the maxim of B is 3.5m, and the maxim of H also is 3.5m, and its cross sectional dimensions is 3.5m * 3.5m=12.25m
2, satisfy the dimensional characteristic of transport vehicle and culvert.
When hoisting crane when the ultra-large type direction develops, intermediate arm need have bigger cross sectional dimensions, want to enlarge cross sectional dimensions, theoretically nothing more than three kinds of modes: first kind is the width B that increases cross-sectional plane separately, second kind is the height H that increases cross-sectional plane separately, the third is width B and the height H that increases cross-sectional plane simultaneously, consider the mechanical property requirements of intermediate arm, first kind comparatively feasible with the third mode, but this dual mode all can cause the cross sectional dimensions of intermediate arm to surpass the dimensional characteristic of transport vehicle and culvert, to this, can only use the fractionation assembly technique to solve at present.
So, as why not splitting and satisfying transportation request? the utility model looks for another way, paying the utmost attention under the prerequisite of cross sectional dimensions, the cross-sectional width of intermediate arm is significantly widened, simultaneously the cross-sectional height of intermediate arm is controlled in the reasonable scope, and reduced the length of intermediate arm as much as possible.
After the improvement, the scope of the cross-sectional width B1 of intermediate arm can reach 5m-9m, and the maxim of cross-sectional height H1 is 3.5m, and the maxim of main chord length L 1 is 3.5m.As seen, the cross sectional dimensions maximum of intermediate arm can increase to 3.5m * 9m=31.5m
2, than existing size 12.25m
2Had significantly to promote, and the maxim of its lateral dimension only is 3.5m * 3.5m=12.25m
2Satisfy the dimensional characteristic of transport vehicle and culvert, therefore can be with the Width of jib length direction during as transportation, and need not disassembled for transport, solved the contradiction between jib sectional dimension and the transportation dexterously, overcome the but unresolved all the time technical barrier of the medium-term and long-term existence of prior art, obtained unforeseeable technique effect.
Please refer to Fig. 9, Fig. 9 is the structural representation of a kind of specific embodiment of hoisting crane that the utility model provides.
Except above-mentioned integral type jib, the utility model also provides a kind of hoisting crane, comprise the assembly 40 of getting off, super-starting balance weight 50, jib 60 and surpassed mast 70, the coxopodite arm of described jib 60 and described turntable of getting off assembly 40 are hinged, described jib 60 is concrete to adopt integral type jib structure mentioned above, can realize hoisting, luffing, revolution and band carry all actions of walking, at utmost embodies its practical performance, all the other structures see also prior art, and this paper repeats no more.
Above-mentioned hoisting crane is specifically as follows the super-tonnage hoisting crane, adopt stable crawler belt or the rubber-tyred running gear of technology maturation, not only controller performance and safety performance can effectively be guaranteed, and grounding pressure is little, the ground environment comformability is extremely strong, can not increase extra design and use expense.
More than hoisting crane provided by the utility model and integral type jib are described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present utility model.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. integral type jib, comprise coxopodite arm, epimerite arm and at least one joint intermediate arm between described coxopodite arm and epimerite arm, the cross sectional dimensions of each described intermediate arm equates, it is characterized in that the cross-sectional width of described intermediate arm is greater than the length of described intermediate arm.
2. integral type jib according to claim 1 is characterized in that described intermediate arm is a truss structure, comprises four main chords and the web member between main chord, and its cross-sectional width is greater than the length of described main chord.
3. integral type jib according to claim 2 is characterized in that, the cross-sectional width scope of described intermediate arm is 5m-9m.
4. integral type jib according to claim 3 is characterized in that, the maxim of described main chord length is 3.5m.
5. integral type jib according to claim 4 is characterized in that, the maxim of the cross-sectional height of described intermediate arm is 3.5m.
6. according to each described integral type jib of claim 1 to 5, it is characterized in that described main chord is rounded on cross-sectional plane, square or rectangle.
7. integral type jib according to claim 6 is characterized in that, connects by bolt or bearing pin between the intermediate arm that described coxopodite arm is adjacent, between the intermediate arm and between the intermediate arm that is adjacent of epimerite arm.
8. integral type jib according to claim 7 is characterized in that, the quantitative range of described intermediate arm is the 10-40 joint.
9. hoisting crane, comprise the assembly of getting off, super-starting balance weight, jib and surpassed mast, the coxopodite arm of described jib and the turntable of the described assembly of getting off are hinged, and it is characterized in that, described jib is specially aforesaid right requirement 1 to 8 each described integral type jib.
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 |
|---|---|---|---|
| CN2011200580615U CN201952138U (en) | 2011-03-07 | 2011-03-07 | Integral arm support and crane comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200580615U CN201952138U (en) | 2011-03-07 | 2011-03-07 | Integral arm support and crane comprising same |
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| Publication Number | Publication Date |
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| CN201952138U true CN201952138U (en) | 2011-08-31 |
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| CN2011200580615U Expired - Lifetime CN201952138U (en) | 2011-03-07 | 2011-03-07 | Integral arm support and crane comprising same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530745A (en) * | 2012-03-20 | 2012-07-04 | 中联重科股份有限公司 | Arm joint for truss arm, truss arm, and crane with truss arm |
| CN102674167A (en) * | 2011-03-07 | 2012-09-19 | 徐工集团工程机械股份有限公司建设机械分公司 | Integrated arm frame and crane with arm frame |
| CN102774761A (en) * | 2012-07-27 | 2012-11-14 | 三一重工股份有限公司 | Arm section of truss arm, truss arm and crane |
| WO2013056441A1 (en) * | 2011-10-20 | 2013-04-25 | 中联重科股份有限公司 | Crane boom frame and crane |
| CN106379821A (en) * | 2016-11-01 | 2017-02-08 | 山东电力建设第工程公司 | Construction method for assemble cargo boom of crawling crane through breaking-off method |
-
2011
- 2011-03-07 CN CN2011200580615U patent/CN201952138U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674167A (en) * | 2011-03-07 | 2012-09-19 | 徐工集团工程机械股份有限公司建设机械分公司 | Integrated arm frame and crane with arm frame |
| CN102674167B (en) * | 2011-03-07 | 2015-05-27 | 徐工集团工程机械股份有限公司建设机械分公司 | Integrated arm frame and crane with arm frame |
| WO2013056441A1 (en) * | 2011-10-20 | 2013-04-25 | 中联重科股份有限公司 | Crane boom frame and crane |
| CN102530745A (en) * | 2012-03-20 | 2012-07-04 | 中联重科股份有限公司 | Arm joint for truss arm, truss arm, and crane with truss arm |
| CN102530745B (en) * | 2012-03-20 | 2014-03-12 | 中联重科股份有限公司 | Arm joint for truss arm, truss arm, and crane with truss arm |
| CN102774761A (en) * | 2012-07-27 | 2012-11-14 | 三一重工股份有限公司 | Arm section of truss arm, truss arm and crane |
| CN106379821A (en) * | 2016-11-01 | 2017-02-08 | 山东电力建设第工程公司 | Construction method for assemble cargo boom of crawling crane through breaking-off method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110831 Effective date of abandoning: 20150527 |
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| RGAV | Abandon patent right to avoid regrant |