CN105836638A - Combined type cantilever crane and hoisting equipment - Google Patents
Combined type cantilever crane and hoisting equipment Download PDFInfo
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- CN105836638A CN105836638A CN201610444762.XA CN201610444762A CN105836638A CN 105836638 A CN105836638 A CN 105836638A CN 201610444762 A CN201610444762 A CN 201610444762A CN 105836638 A CN105836638 A CN 105836638A
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- arm
- combined type
- coxopodite
- middle node
- size
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention relates to a combined type cantilever crane and hoisting equipment. The combined type cantilever crane comprises a bottom joint arm assembly, a middle joint arm assembly and an arm head assembly which are sequentially connected in the length direction of the combined type cantilever crane; and the middle joint arm assembly comprises at least two middle joint arms which are sequentially connected in the length direction of the combined type cantilever crane. The combined type cantilever crane is in an assembled type, multiple combined conversion manners are achieved in use, different hoisting condition requirements can be met, splitting can be carried out during transporting, limitation of the transporting size, the transporting weight and the like is avoided, the using scope and the using rate of the combined type cantilever crane are greatly improved, energy sources are saved, and the high economic benefits are brought to users.
Description
Technical field
The present invention relates to engineering machinery field, particularly relate to a kind of combined type jib and crane gear.
Background technology
Along with international energy and the fast development of chemical engineering construction field, modularization in engineering, big
The lifting requirements of typeization and integration improves constantly, and proposes crane gear lifting capacity and hoisting moment
Higher requirement.Boom system is as the main bearing member of crane gear, the structure shape of himself
The characteristic such as formula, bearing capacity directly affects serviceability and the lifting performance of complete machine.
As shown in Fig. 1 (a), Fig. 1 (b), the general jib structure form of crane gear is typically adopted
With the truss structure by four main chords 1 ' and the welding of some web members 2 '.Say in terms of stress,
Jib belongs to bi-axial bending moment, and when i.e. crane gear hangs load work, jib is in luffing plane and returns
All bear the effect of axial force and moment of flexure in turning plane, therefore, from telescopic boom section analysis, need foot
Enough sectional areas, to ensure telescopic boom section intensity, thus resist the effect of axial force；Need enough
Cross-sectional width B and height H to ensure the moment of inertia in two planes, thus the work of resist torque
With.In order to improve the bearing capacity of jib, need to increase specification and the cross section chi of jib of main chord
Very little, and the height-width of road transport limits the increase that seriously govern its cross section, therefore should
Ensure the bearing capacity that jib is enough, meet transportation clearance requirement again, how to solve this to contradiction
Become the key issue that crane gear develops to ultra-large type.
In prior art, double boom systems of ultra-large type crane gear are in order to improve the carrying energy of self
Power typically adopts the following technical scheme that
1) increase the sectional dimension of boom system, improve the material specification used by boom system and material；
2) use combined type main chord (as shown in Fig. 2 (a)), i.e. by two main chords 1 ' (as
Shown in Fig. 2 (b) and Fig. 2 (c)), three main chords 1 ' (as shown in Fig. 2 (d)), four
The combination of main chord 1 ' (as shown in Fig. 2 (e)) or more main chord replaces original one
Main chord, by web member, web or is directly welded to connect between each main chord.
3) use fractionation mounting technology, the parts beyond movement requirement are split into several little
Parts, then got up by assembly connection, the assembled jib in the most existing scheme, will jib
Main chord and web member split, to meet movement requirement, again by web member and main chord after transition is in place
It is assembled into one by bearing pin.Under normal circumstances, large-tonnage jib length can reach more than 100 meter,
The web member assembled in situ of hundreds of, its degree of difficulty well imagines, and is greatly increased assembling cycle,
Reduce efficiency；The application of a large amount of mounting technologies brings the increase of production difficulty and design cost simultaneously.
In prior art, the boom system of ultra-large type crane gear improves the technology of self-bearing capacity
Scheme there is problems in that
1) sectional dimension of boom system and material specification are by transportation clearance and transport heavy quantitative limitation not
May infinitely increase；Improve material and increase cost, higher to material oneself requirement, and improve material
Boom system bearing capacity is promoted limited.
2) combined type main-chord arm support system, joint arm self structure form is complicated, to frock and spelling point
Require higher.
3) combined type main-chord arm support system, connects by Type of Welding between each main chord, butt welded seam
Require higher, and weld defect checks that difficulty is more complicated, there is certain potential safety hazard.
4) combined type main-chord arm support system, is an entirety between each main chord, by hauled weight
Limit, the impossible unconfined increase of the quantity of main chord, thus the carrying energy of boom system self
It is limited that power also promotes.
5) movement requirement becomes the serious restriction that crane develops to ultra-large type, forces in existing product
Substantial amounts of fractionation needs, and seriously reduces the Practical Performance of crane, assembles to user and brings difficulty,
Increase the production cycle, reduce service efficiency.
6) mounting technology needs cooperation requirement certain between each connector, effective in needing to produce
Ensure, substantial amounts of matching requirements in existing product, bring the difficulty in production and design cost simultaneously
Increase.
Below the technical term related in the present invention is explained.
Ultra-large type crane gear: be one can realize hoisting, luffing, revolution action, play principal characteristic
The equipment of energy super large.
Boom system: a kind of for by heavy lift to certain altitude and amplitude, can bear axially
The space four limbs truss structure of power and moment of flexure.
Luffing plane: plane determined by jib and luffing arm-tie is referred to as luffing range of cantilever support plane, is becoming
In width plane, jib is analyzed as the mechanical model of two ends freely-supported.
Plane of rotation: parallel ground and the plane vertical with luffing plane are referred to as jib plane of rotation,
In plane of rotation, jib is fixed one end mechanical model freely as one end and is analyzed.
Summary of the invention
The purpose of the present invention is to propose to a kind of combined type jib and crane gear, it is not limited by transport,
Different combinations can be selected according to reality lifting demand.
For achieving the above object, the invention provides a kind of combined type jib, it includes along combined type
Coxopodite arm component, middle node arm component and the arm head assembly that jib length direction is sequentially connected with, institute
State the centre that middle node arm component includes that at least two is sequentially connected with along combined type jib length direction
Joint arm.
One preferably or in alternative embodiment, described middle node arm component includes at least in the middle of two-layer
Joint arm, every layer of middle node arm includes what at least two was sequentially connected with along combined type jib length direction
Middle node arm, is connected by least one connecting joint arm between adjacent two layers middle node arm, each layer
Middle node arm is all connected to same described coxopodite arm component and same described arm head assembly.
One, preferably or in alternative embodiment, described coxopodite arm component includes coxopodite arm, the described end
First end of joint arm is connected to each layer middle node arm, and the second end of described coxopodite arm is used for and main frame
Hinged, the size of the size of the first end of described coxopodite arm to the second end of described coxopodite arm is gradually
Reduce, to form the pin joint hinged with main frame.
One, preferably or in alternative embodiment, described coxopodite arm component includes coxopodite arm and conversion joint
Arm, every layer of middle node arm is all connected with conversion joint arm described in, and each described conversion joint arm is all connected to
Same described coxopodite arm, the size of one end that described conversion joint arm is connected with middle node arm is to described
The size of one end that conversion joint arm is connected with described coxopodite arm is gradually reduced, described coxopodite arm and institute
The size stating one end that conversion joint arm connects is gradually reduced to the size of the described coxopodite arm other end,
To form the pin joint hinged with main frame.
One, preferably or in alternative embodiment, described coxopodite arm component includes conversion joint arm, transition
Joint arm and coxopodite arm, every layer of middle node arm is all connected with conversion joint arm described in, each described conversion joint
Arm is all connected to same described transition joint arm, and described transition joint arm is connected to described coxopodite arm；
The size of one end that described conversion joint arm is connected with middle node arm is to described conversion joint arm and institute
The size stating one end that transition joint arm connects is gradually reduced；
The size of one end that described transition joint arm is connected with described conversion joint arm is to described transition joint arm
The size of the one end being connected with described coxopodite arm is gradually reduced；
The size of one end that described coxopodite arm is connected with described transition joint arm is another to described coxopodite arm
The size of one end is gradually reduced, to form the pin joint hinged with main frame.
One preferably or in alternative embodiment, described coxopodite arm component, described middle node arm component
Main chord and web member is all included with described arm head assembly.
Preferably or in alternative embodiment, it is positioned at the wall thickness of the main chord of the middle node arm of lower floor one
Wall thickness more than the main chord of the middle node arm being positioned at upper strata.
One preferably or in alternative embodiment, described coxopodite arm component and described middle node arm component
The size of the one end connected is gradually reduced to the size of the other end, to form the pin joint with main frame.
One, preferably or in alternative embodiment, described coxopodite arm component is along combined type jib length side
Cross section structure triangular in shape upwards, one of them summit of described triangular structure is used for and master
Machine is hinged.
For achieving the above object, present invention also offers a kind of crane gear, it includes any of the above-described
Combined type jib in embodiment.
Based on technique scheme, the present invention at least has the advantages that
The Design Thinking of conventional jib broken by the combined type jib that the present invention provides, and welded type is overall
Jib becomes assembled combined type jib, coxopodite arm component that combined type jib includes being sequentially connected with,
Middle node arm component and arm head assembly, and middle node arm component includes that at least two is along combined type arm
The middle node arm that frame length direction is sequentially connected with.The combined type jib that the present invention provides has multiple
Combined transformation mode, can meet different lifting requirement, can split, no when transport
Again by transportation clearance, hauled weight etc. limit, substantially increase combined type jib range and
Utilization rate, has saved the energy, brings higher economic benefit for user.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the application's
A part, the schematic description and description of the present invention is used for explaining the present invention, and it is right to be not intended that
The improper restriction of the present invention.In the accompanying drawings:
Fig. 1 (a) is the structural representation of crane gear jib in prior art；Fig. 1 (b) is figure
The schematic side view of 1 (a)；
Fig. 2 (a) is the structural representation of combined type main-chord arm support in prior art；Fig. 2 (b)～
Fig. 2 (e) is the Section A-A schematic diagram of Fig. 2 (a) varying number main chord embodiment；
The structural representation of the heavy in section combined type jib that Fig. 3 provides for the present invention；
The first embodiment schematic diagram of the small bore combined type jib that Fig. 4 provides for the present invention；
Second embodiment schematic diagram of the small bore combined type jib that Fig. 5 provides for the present invention；
3rd embodiment schematic diagram of the small bore combined type jib that Fig. 6 provides for the present invention.
Label in accompanying drawing:
1 '-main chord；2 '-web member；
1-coxopodite arm component；11-coxopodite arm；12-conversion joint arm；121-first changes joint arm；122-
Second conversion joint arm；13-transition joint arm；
2-middle node arm component；21-middle node arm；211-the first middle node arm；In the middle of 212-second
Joint arm；
3-arm head assembly；31-the first small arm head assembly；32-the second small arm head assembly；
4-connecting joint arm.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is carried out clearly
Chu, it is fully described by.Obviously, described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art are not having
Have and make the every other embodiment obtained under creative work premise, broadly fall into present invention protection
Scope.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ",
"front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward "
It is based on orientation shown in the drawings or position relationship in the orientation indicated or position relationship, merely to
It is easy to describe the present invention and simplification description rather than instruction or the device of hint indication or element is necessary
There is specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the present invention
The restriction of protection domain.
As it is shown on figure 3, the illustrative examples of the combined type jib provided for the present invention, show at this
In meaning property embodiment, combined type jib includes the coxopodite arm component being sequentially connected with along its length
1, middle node arm component 2 and arm head assembly 3, middle node arm component 2 includes that at least two is along group
The middle node arm 21 that box-like jib length direction is sequentially connected with.
The Design Thinking of conventional jib broken by the combined type jib that the present invention provides, and welded type is overall
Jib becomes assembled combined type jib, can split when transport so that combined type jib
No longer limited by transportation clearance, hauled weight etc.；In use, can according to reality lifting demand,
Lifting condition, lifting assemble the conditions such as place, select different combinations, need to adapt to lift
Ask.
Combined type jib in above-described embodiment has multiple combination mapping mode, can meet difference and hang
Dress requirement.Meanwhile, by increasing a few components as far as possible on the basis of using existing jib,
Use various combination method, substantially increase range and the utilization of crane gear combined type jib
Rate, has saved the energy, brings higher economic benefit for user.
In the illustrative examples of the combined type jib of present invention offer, middle node arm component 2
Can include that at least two-layer middle node arm, every layer of middle node arm include that at least two is along combined type arm
The middle node arm 21 that frame length direction is sequentially connected with, by least between adjacent two layers middle node arm
One connecting joint arm 4 connects, each layer middle node arm be all connected to same coxopodite arm component 1 and with
One arm head assembly 3.
In each embodiment of combinations thereof formula jib, according to the stress of crane gear combined type jib
Characteristic, the usual stress in lower section being in combined type jib is relatively big, and the top being in combined type jib is subject to
Power is less.Therefore, in order to reduce the weight of combined type jib, improve the elevating capacity of crane gear,
Reduce cost simultaneously, be positioned at the main string of the middle node arm 21 (the second middle node arm 212) of lower floor
The wall thickness of bar is more than the main chord of the middle node arm 21 (the first middle node arm 211) being positioned at upper strata
Wall thickness.
Combined type jib as shown in Figure 3 includes two-layer middle node arm, but is not limited to this, can basis
Actual lifting demand, lifting condition, lifting assemble the conditions such as place, select the combination of more than two-layer
Mode, is combined into the jib of different cross section size, to adapt to lifting demand.
In the embodiment of above-mentioned each combined type jib, coxopodite arm component 1 is for cutting with scissors with main frame
Connecing, the size of one end that coxopodite arm component 1 is connected with middle node arm component 2 is to coxopodite arm component
The size of the other end of 1 is gradually reduced, to form the pin joint with main frame.Coxopodite arm component 1
The form that is gradually reduced of size be conducive to carrying out hinged with main frame, for heavy in section combined type
The combined type jib of jib or small bore, the structure of main frame can not change, only by coxopodite arm
The change in size of assembly 1 is hinged with meet with main frame, easy for installation, main machine structure general
Property is strong.
Further, the coxopodite arm component 1 cross section along combined type jib length direction can be in
Triangular structure, the jib at the place, a wherein limit of triangular structure is used for and middle node arm group
Part 2 connects, and the jib at the place, summit of the triangular structure relative with this limit is for cutting with scissors with main frame
Connect.
Coxopodite arm component 1 can have multiple form of implementation, and coxopodite arm component 1 is set forth below
Three kinds of forms of implementation.
First form of implementation of coxopodite arm component 1: coxopodite arm component 1 can include coxopodite arm 11,
First end of coxopodite arm 11 is connected to each layer middle node arm, the second end of coxopodite arm 11 for
Main frame is hinged, the size of the second end of the size of the first end of coxopodite arm 11 to coxopodite arm 11 by
Tapered little, to form the pin joint hinged with main frame.
Second form of implementation of coxopodite arm component 1: coxopodite arm component 1 includes coxopodite arm 11 and turns
Changing joint arm 12, every layer of middle node arm is all connected with a conversion joint arm 12, and each conversion joint arm 12 all connects
It is connected to same coxopodite arm 11；The size of one end that conversion joint arm 12 is connected with middle node arm 21 arrives
The size of one end that conversion joint arm 12 is connected with coxopodite arm 11 is gradually reduced, coxopodite arm 11 and turn
The size changing one end that joint arm 12 connects is gradually reduced to the size of the other end of coxopodite arm 11,
To form the pin joint hinged with main frame.
3rd form of implementation of coxopodite arm component 1: coxopodite arm component 1 include conversion joint arm 12,
Transition joint arm 13 and coxopodite arm 11, every layer of middle node arm is all connected with a conversion joint arm 12, each turn
Changing joint arm 12 and be all connected to same transition joint arm 13, transition joint arm 13 is connected to coxopodite arm 11；
The size of one end that conversion joint arm 12 is connected with middle node arm 21 is to conversion joint arm 12 and mistake
The size crossing one end that joint arm 13 connects is gradually reduced；
The size of one end that transition joint arm 13 is connected with conversion joint arm 12 is to transition joint arm 13 and the end
The size of one end that joint arm 11 connects is gradually reduced；
The size of one end that coxopodite arm 11 is connected with transition joint arm 13 is to the other end of coxopodite arm 11
Size be gradually reduced, to form the pin joint hinged with main frame.
In 3rd form of implementation of above-mentioned coxopodite arm component 1: the shape and structure of conversion joint arm 12 can
With consistent with the shape and structure of coxopodite arm 11.
In three kinds of forms of implementation of above-mentioned coxopodite arm component 1, the size of coxopodite arm 11 is all from close
One end of middle node arm component 2 is gradually reduced to the other end of coxopodite arm 11, is formed and is used for and master
The hinge that machine is hinged, therefore, the either group of which kind of section form (heavy in section or small bore)
Box-like jib, can carry out hinged with existing main frame, main frame highly versatile, it is not necessary to for group
The structure of the alternation of cross-section main frame of box-like jib, easy for installation, cost-effective.
In each embodiment of combinations thereof formula jib, coxopodite arm component 1, middle node arm component 2
Main chord and web member is may each comprise with arm head assembly 3.Coxopodite arm component 1, middle node arm component
2 and arm head assembly 3 in each jib all can use maturation welded type entirety jib, structure
Form is simple, and its weight and appearance and size all disclosure satisfy that movement requirement, permissible by this kind of combination
Making telescopic boom section significantly be promoted, jib bearing capacity is also improved significantly.
In each embodiment of combinations thereof formula jib, connecting between jib can be bearing pin connection, spiral shell
Tether to connect etc. and all realize fabricated connected mode.
Two specific embodiments of combined type jib that the present invention provide are set forth below.
First specific embodiment: heavy in section combined type jib.
As it is shown on figure 3, be the structural representation of heavy in section combined type jib, heavy in section combined type arm
In frame, coxopodite arm component 1 includes coxopodite arm 11, transition joint arm 13 and changes joint arm 12, wherein,
Conversion joint arm 12 includes again the first conversion joint arm 121 and the second conversion joint arm 122；Middle node arm group
Part 2 includes ground floor middle node arm and second layer middle node arm, and ground floor middle node arm includes four
First middle node arm 211, second layer middle node arm includes four the second middle node arms 212, ground floor
Three connecting joint arms 4, ground floor middle node arm are set between middle node arm and second layer middle node arm
It is connected to same arm head assembly 3 with second layer middle node arm.
In figure, the size for connection of the bilevel middle node arm 21 shown in 3 is the same, the first conversion
The size for connection of joint arm 121 and the second conversion joint arm 122 is too.
According to the mechanical characteristic of crane gear combined type jib, the lower section being in combined type jib is usual
Stress is relatively big, and the top stress being in combined type jib is less, therefore, in order to reduce combined type arm
The weight of frame, improves the elevating capacity of crane gear, reduces cost simultaneously, be in combined type jib
The main chord wall thickness that second conversion joint arm 122 of lower section and the second middle node arm 212 are used will be relatively
Greatly, the first conversion joint arm 121 and the first middle node arm 211 institute above combined type jib it is in
The main chord wall thickness used is thin.
Based on above-described embodiment, when assembling heavy in section combined type jib, can be according to on-the-spot lifting
The elevating capacity of equipment, Assembling condition and scene have the quantity of jib, when jib combines
There is multiple choices mode, as can be used the first conversion joint arm 121 or the second conversion joint arm simultaneously
122 and use the first middle node arm 211 and the second middle node arm 212 and mutual intersection simultaneously
Select to use.
Second specific embodiment: small bore combined type jib.
Heavy in section combined type jib in above-mentioned first specific embodiment can be by increasing two pieces forearm
Head assembly is assembled into two set small bore combined type jibs, as shown in Figure 4, Figure 5 simultaneously.
As shown in Figure 4, first set small bore combined type jib includes the first conversion joint arm 121, first
Middle node arm 211, the first small arm head assembly 31.
As it is shown in figure 5, the second set small bore combined type jib includes the second conversion joint arm 122, second
Middle node arm 212, the second small arm head assembly 32.
In above-mentioned two set small bore combined type jibs, coxopodite arm 11 and the connection chi of conversion joint arm 12
Very little and shape and structure can differ, it is therefore possible to use the first conversion joint arm 121, second is changed
Joint arm 122 is as coxopodite；Or, coxopodite arm 11 and the size for connection of conversion joint arm 12 and shape
Structure can also be identical, therefore can select to use coxopodite arm 11 or conversion joint arm 12 as coxopodite.
As shown in Figure 6, if coxopodite arm 11 and conversion save size for connection and the shape and structure of arm 12
Identical, coxopodite arm 11 can be used to replace the first conversion joint arm 121 and the second conversion joint arm 122,
Coxopodite arm 11 in Fig. 6 is connected with middle node arm 21.
When assembling small bore jib, can be according to the elevating capacity of on-the-spot crane gear, on-the-spot group
Dress condition and scene have the quantity of jib, have more kinds of selection mode, as coxopodite can use
One conversion joint arm 121, second changes joint arm 122 or coxopodite arm 11, and middle node arm 21 can use
First middle node arm 211 and the second middle node arm 212 and mutual cross selection.
The present invention breaks jib traditional design mode, it is provided that one has polymorphic combination
Formula jib, by conversion the most of the same race, makes the cross section of combined type jib be increased, the carrying of jib
Ability gets a promotion, and joint arm is broken up during transport individually transport simultaneously, solves in combined type jib
By transportation clearance and a difficult problem for hauled weight；Simultaneously by increasing as far as possible on the basis of using former jib
Add a small arm head, the combined type jib that bearing capacity is relatively small can be combined into, difference can be met
Hoisting fixture and the requirement of different bearer ability crane gear, improve the use of combined type jib simultaneously
Scope and utilization rate, economize on resources.
The present invention will split mounting technology Appropriate application, improve its bearing capacity, use this pattern arm
Frame, although also needing during different conversion to assemble, but uses assembling with existing web member with main chord
The jib of formula is compared, it is evident that production and the assembly difficulty of this combined type jib are substantially reduced,
Assemble and Practical Performance is greatly improved.
The combined type jib that the present invention provides, it is adaptable to crane gear, is particularly well-suited to ultra-large type and rises
Heavy equipment.
Present invention also offers a kind of crane gear, it includes the combination in any of the above-described embodiment
Formula jib.
By the description of each embodiment above-mentioned, the present invention can be derived and the most at least have following excellent
Point:
1) combined type jib makes transportation clearance and hauled weight no longer become constraint combined type jib certainly
Body weight, the factor of self-bearing capacity so that the self-bearing capacity of combined type jib obtains greatly
Amplitude promotes；
2) combined type jib structure form is simple, greatly reduces frock and production difficulty；
3) polymorphic jib is adapted to the lifting demand of different operating mode, convert simply,
Convenient；
4) split the reasonable utilization of mounting technology, make all parts both meet transportation clearance and limit, again
Conscientiously from user, the dismounting in view of combined type jib assembles comprehensively, improves efficiency；
5) optimized design of structural member, greatly reduces production difficulty；Conventional assembling and use
Requirement, is greatly saved the use cost of user, increases the benefit；
6) multiple combination form jib can apply to the crane gear of different bearer Capability Requirement, group
The overall utilization rate of box-like jib improves, cost-effective；
7) jib combination has more kinds of selection, can carry out different choosings according to on-the-spot physical condition
Select combination, flexibly, the most convenient.
In describing the invention, it is to be understood that use the word such as " first ", " second "
Limit parts, it is only for be easy to above-mentioned parts is distinguished, as there is no Stated otherwise,
Above-mentioned word does not has particular meaning, therefore it is not intended that limiting the scope of the invention.
Finally should be noted that: above example only in order to technical scheme to be described rather than
It is limited；Although the present invention being described in detail with reference to preferred embodiment, art
Those of ordinary skill it is understood that still the detailed description of the invention of the present invention can be modified
Or portion of techniques feature is carried out equivalent；Without deviating from the spirit of technical solution of the present invention,
It all should be contained in the middle of the technical scheme scope that the present invention is claimed.
Claims (10)
1. a combined type jib, it is characterised in that: include depending on along combined type jib length direction
The coxopodite arm component (1) of secondary connection, middle node arm component (2) and arm head assembly (3), institute
State middle node arm component (2) and include what at least two was sequentially connected with along combined type jib length direction
Middle node arm (21).
2. combined type jib as claimed in claim 1, it is characterised in that: described middle node arm
Assembly (2) includes that at least two-layer middle node arm, every layer of middle node arm include that at least two is along combination
The middle node arm (21) that formula jib length direction is sequentially connected with, between adjacent two layers middle node arm
Being connected by least one connecting joint arm (4), each layer middle node arm is all connected to the same described end
Joint arm component (1) and same described arm head assembly (3).
3. combined type jib as claimed in claim 2, it is characterised in that: described coxopodite arm group
Part (1) includes that coxopodite arm (11), the first end of described coxopodite arm (11) are connected in each layer
Segmentum intercalaris arm, the second end of described coxopodite arm (11) is used for hinged with main frame, described coxopodite arm (11)
The size of the first end be gradually reduced to the size of the second end of described coxopodite arm (11), with shape
Become the pin joint hinged with main frame.
4. combined type jib as claimed in claim 2, it is characterised in that: described coxopodite arm group
Part (1) includes coxopodite arm (11) and conversion joint arm (12), and every layer of middle node arm is all connected with one
Described conversion joint arm (12), each described conversion joint arm (12) is all connected to same described coxopodite
Arm (11), the size of one end that described conversion joint arm (12) is connected with middle node arm (21)
Size to one end that described conversion joint arm (12) is connected with described coxopodite arm (11) gradually contracts
Little, the size of one end that described coxopodite arm (11) is connected with described conversion joint arm (12) is to institute
The size stating coxopodite arm (11) other end is gradually reduced, to form the pin joint hinged with main frame.
5. combined type jib as claimed in claim 2, it is characterised in that: described coxopodite arm group
Part (1) includes conversion joint arm (12), transition joint arm (13) and coxopodite arm (11), every layer
Middle node arm is all connected with conversion joint arm (12) described in, and each described conversion joint arm (12) all connects
Being connected to same described transition joint arm (13), described transition joint arm (13) is connected to described coxopodite
Arm (11)；
The size of one end that described conversion joint arm (12) is connected with middle node arm (21) is to described
The size of one end that conversion joint arm (12) is connected with described transition joint arm (13) is gradually reduced；
Described transition joint arm (13) arrives with the size of one end that described conversion joint arm (12) is connected
Described transition joint arm (13) is gradually reduced with the size of one end that described coxopodite arm (11) is connected；
The size of one end that described coxopodite arm (11) is connected with described transition joint arm (13) is to institute
The size of the other end stating coxopodite arm (11) is gradually reduced, hinged with main frame hinged to be formed
Point.
6. combined type jib as claimed in claim 2, it is characterised in that: described coxopodite arm component
(1), described middle node arm component (2) and described arm head assembly (3) all include main chord and
Web member.
7. combined type jib as claimed in claim 6, it is characterised in that: it is positioned in lower floor
The wall thickness of the main chord of segmentum intercalaris arm (21) is more than the main chord of the middle node arm (21) being positioned at upper strata
Wall thickness.
8. combined type jib as claimed in claim 1, it is characterised in that: described coxopodite arm group
The size of one end that part (1) is connected with described middle node arm component (2) is to the size of the other end
It is gradually reduced, to form the pin joint with main frame.
9. combined type jib as claimed in claim 1, it is characterised in that: described coxopodite arm group
The part (1) cross section structure triangular in shape along combined type jib length direction, described triangle is tied
One of them summit of structure is for hinged with main frame.
10. a crane gear, it is characterised in that: include such as any one of claim 1～9 institute
The combined type jib stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610444762.XA CN105836638A (en) | 2016-06-20 | 2016-06-20 | Combined type cantilever crane and hoisting equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610444762.XA CN105836638A (en) | 2016-06-20 | 2016-06-20 | Combined type cantilever crane and hoisting equipment |
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| CN105836638A true CN105836638A (en) | 2016-08-10 |
Family
ID=56576346
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|---|---|---|---|
| CN201610444762.XA Pending CN105836638A (en) | 2016-06-20 | 2016-06-20 | Combined type cantilever crane and hoisting equipment |
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| CN106185654A (en) * | 2016-09-09 | 2016-12-07 | 徐工集团工程机械股份有限公司 | Combination type jib and crane gear |
| CN109110658A (en) * | 2018-07-28 | 2019-01-01 | 武汉船用机械有限责任公司 | A kind of eight chord member cantilever cranes |
| CN109761154A (en) * | 2019-03-12 | 2019-05-17 | 徐工集团工程机械股份有限公司建设机械分公司 | Crane |
| CN112830400A (en) * | 2021-02-01 | 2021-05-25 | 浙江三一装备有限公司 | Crawler crane and crane transportation method |
| CN113562638A (en) * | 2021-07-22 | 2021-10-29 | 大连益利亚工程机械有限公司 | Large-arm-length crane boom and crane |
| CN113582049A (en) * | 2021-07-19 | 2021-11-02 | 徐工集团工程机械股份有限公司建设机械分公司 | Crawler crane and triangular truss arm thereof |
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| CN113582049A (en) * | 2021-07-19 | 2021-11-02 | 徐工集团工程机械股份有限公司建设机械分公司 | Crawler crane and triangular truss arm thereof |
| CN113562638A (en) * | 2021-07-22 | 2021-10-29 | 大连益利亚工程机械有限公司 | Large-arm-length crane boom and crane |
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Application publication date: 20160810 |