CN104477793B - Crane super lifting device and crane - Google Patents
Crane super lifting device and crane Download PDFInfo
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- CN104477793B CN104477793B CN201410776943.3A CN201410776943A CN104477793B CN 104477793 B CN104477793 B CN 104477793B CN 201410776943 A CN201410776943 A CN 201410776943A CN 104477793 B CN104477793 B CN 104477793B
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- Prior art keywords
- lifting device
- crane
- super lifting
- side sway
- line
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Classifications
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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
- B66C23/72—Counterweights or supports for balancing lifting couples
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a kind of crane super lifting device and crane.Wherein, crane super lifting device includes: left mast and right mast, is arranged on the arm of crane；Left front drag-line, the first end of left front drag-line is connected with left mast；Right fore stay, first end of right fore stay is connected with right mast, crane super lifting device also includes: side sway compensator, side sway compensator is arranged on arm, side sway compensator is connected between the second end of left front drag-line and the second end of right fore stay, when the stress difference of left front drag-line and right fore stay reaches preset value, side sway compensator can be subjected to displacement, and then left front drag-line and right fore stay produce linkage so that arm generation side sway.Technical scheme solves super lifting device of the prior art and controls the problem that side sway is susceptible to the phenomenon of arm folding arm.
Description
Technical field
The present invention relates to technical field of engineering machinery, in particular to a kind of crane super lifting device and crane.
Background technology
At present, in order to meet the requirement of engineering construction, crane generally has the trend towards super-tonnage development.To this end, rise
The jib joint number of heavy-duty machine is on the increase, and length constantly increases, and lifting capacity the most constantly increases simultaneously.
Above-mentioned situation also exists problems with:
1, the design space of crane is limited, and arm 2 ' cross section cannot continue to strengthen, thus causes arm 2 ' amount of deflection big；
2, the arm 2 ' thickness of slab of crane is because of high-strength steel die mould technological ability limitation, it is impossible to continues to thicken, thus causes arm 2 '
Stress is big；
3, during crane work, the confined space is made full use of, crane so can be caused to there is local stability sex chromosome mosaicism.
To this end, as it is shown in figure 1, existing super-tonnage crane is additionally arranged super lifting device, to be used for reducing amount of deflection, reduce stress,
Improve lifting capacity.But, in the prior art, as shown in Figures 2 and 3, the both sides drag-line of super lifting device is independent each other, from
And cause two side draws unequal.The Producing reason such as not grade of two side draws is as follows:
1, initial guy cable length, pulling force when so making arm 2 ' unloaded.In the prior art, generally can be right
Initial drag-line extension elongation is controlled；
2, after carrying there is side sway in arm 2 ' system.Side sway is otherwise known as plane of rotation amount of deflection, its producing cause be roughly divided into
Lower two kinds:
A, lifting capacity reach certain numerical value, cause the malformation amount of being deformed of arm 2 '；
B, lifting capacity are not up to maximum, but arm 2 ' in turning course because speed of gyration is too fast, wind load or other load
Cause the malformation amount of being deformed of arm 2 '.
One of effect of super lifting device controls side sway exactly, but in prior art when controlling side sway, the drag-line of arm 2 ' both sides
In carrying back pull.Thus cause being easily controlled " excessive " when arm 2 ' side sway is controlled, arm 2 ' system
Generation serpentine deforms, and then the phenomenon that can produce folding arm occurs.In order to prevent the generation of above-mentioned phenomenon, the effect of super lifting device
Can not completely play, to such an extent as to the lifting capacity improved is limited.
Summary of the invention
Present invention is primarily targeted at a kind of crane super lifting device of offer and crane, to solve setting-up of the prior art
Device controls the problem that side sway is susceptible to the phenomenon of arm folding arm.
To achieve these goals, according to an aspect of the invention, it is provided a kind of crane super lifting device, including: Zuo Wei
Bar and right mast, be arranged on the arm of crane；Left front drag-line, the first end of left front drag-line is connected with left mast；Draw before the right side
Rope, the first end of right fore stay is connected with right mast, and crane super lifting device also includes: side sway compensator, and side sway compensator is pacified
Being contained on arm, side sway compensator is connected between the second end of left front drag-line and the second end of right fore stay, when left front drag-line and
When the stress difference of right fore stay reaches preset value, side sway compensator can be subjected to displacement, and then left front drag-line and right fore stay produce
Linkage is so that arm generation side sway.
Further, side sway compensator include mandrel, mandrel be connected to the second end of left front drag-line and right fore stay the second end it
Between.
Further, mandrel is provided with stopper section；Side sway compensator also includes: right baffle-plate and right baffle plate, is fixedly installed on and hangs
On arm, mandrel is located in right baffle-plate and right baffle plate movably, and stopper section is between right baffle-plate and right baffle plate；Left elastic component,
It is arranged between right baffle-plate and stopper section；Right elastic component, is arranged between right baffle plate and stopper section.
Further, stopper section is baffle ring.
Further, stopper section is equal with the distance at the two ends of mandrel.
Further, side sway compensator also includes: for obtaining the position monitoring device of spindle displacement, position monitoring device is arranged
On arm.
Further, position monitoring device is displacement transducer.
Further, stopper section has the tip extended towards position monitoring device.
Further, left elastic component is the left spring being set in mandrel, and right elastic component is the right spring being set in mandrel.
According to a further aspect in the invention, it is provided that a kind of crane, including crane super lifting device, crane super lifting device is
Above-mentioned crane super lifting device.
Application technical scheme, is additionally arranged side sway compensator.When arm generation side sway, left front drag-line and right fore stay
Stress different.Now, when the stress difference of left front drag-line and right fore stay reaches preset value, side sway compensator can be according to a left side
Fore stay and the stress of right fore stay and be subjected to displacement so that the length of left front drag-line and right fore stay changes in compensation range,
And then making the stress approximately equal all the time of left front drag-line and right fore stay, it is to avoid the side sway of arm produces serpentine, can allow for
While certain side sway operation, the problem that folding arm will not be produced.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of crane in prior art；
Fig. 2 shows the structural representation of the super lifting device of crane in prior art；
Fig. 3 shows the deformation schematic diagram of the super lifting device of Fig. 2；
Fig. 4 shows the structural representation of the crane according to the present invention；
Fig. 5 shows the structural representation of the embodiment of the crane super lifting device according to the present invention；
Fig. 6 shows the structural representation of the side sway compensator in Fig. 5；
Fig. 7 a shows the structural representation before the super lifting device carrying in Fig. 5；
Fig. 7 b shows the working state schematic representation of super lifting device of the prior art；
Fig. 7 c shows the working state schematic representation of the super lifting device in Fig. 5；And
Fig. 8 shows the working state schematic representation of the side sway compensator in Fig. 5.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
2 ', arm；2, arm；11, left back drag-line；12, right backstay；13, left mast；14, right mast；15, left
Fore stay；16, right fore stay；17, side sway compensator；171, mandrel；171a, stopper section；172, right baffle-plate；173、
Left elastic component；174, right elastic component；175, right baffle plate；176, position monitoring device.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Figure 4 and Figure 5, the crane super lifting device of the present embodiment includes left mast 13, right mast 14, left front drag-line 15
And right fore stay 16.Wherein, left mast 13 and right mast 14 are arranged on the arm 2 of crane.The of left front drag-line 15
One end is connected with left mast 13.First end of right fore stay 16 is connected with right mast 14.Crane super lifting device also includes side sway
Compensator 17.Side sway compensator 17 is arranged on arm 2, and side sway compensator 17 is connected to the second end and the right side of left front drag-line 15
Between second end of fore stay 16 when the stress difference of left front drag-line 15 and right fore stay 16 reaches preset value, side sway compensator
17 can be subjected to displacement, and then left front drag-line 15 and right fore stay 16 produce linkage so that arm 2 occurs side sway.
The crane super lifting device of application the present embodiment, is additionally arranged side sway compensator 17.When arm 2 occurs side sway, left front draw
Rope 15 is different with the stress of right fore stay 16.Now, when the stress difference of left front drag-line and right fore stay reaches preset value,
Side sway compensator 17 can be subjected to displacement according to left front drag-line 15 and the stress of right fore stay 16, so that left front drag-line 15 He
The length of right fore stay 16 changes in compensation range, and then makes the stress of left front drag-line 15 and right fore stay 16 approximate phase all the time
Deng, it is to avoid the side sway of arm 2 produces serpentine, while can allow for certain side sway operation, will not produce showing of folding arm
As.
As shown in Figure 6, in the crane super lifting device of the present embodiment, side sway compensator 17 includes mandrel 171, mandrel 171
It is connected between the second end and second end of right fore stay 16 of left front drag-line 15, mandrel 171 is provided with stopper section 171a.
Side sway compensator 17 also includes right baffle-plate 172, right baffle plate 175, left elastic component 173 and right elastic component 174.Wherein, left gear
Plate 172 and right baffle plate 175 are fixedly installed on arm 2, and mandrel 171 is located in right baffle-plate 172 and right baffle plate 175 movably
In, stopper section 171a is between right baffle-plate 172 and right baffle plate 175.Left elastic component 173 is arranged on right baffle-plate 172 and backstop
Between portion 171a.Right elastic component 174 is arranged between right baffle plate 175 and stopper section 171a.
As it is shown in fig. 7, crane is in normal operating conditions, each ingredient is stretched to duty by super lifting device, passes through
Left front drag-line 15, right fore stay 16, left mast 13 and right mast 14 can control the amount of deflection of arm 2.
In the prior art, before carrying, as shown in Figure 7a, a length of L1 of drag-line rope of left front drag-line 15, right fore stay 16
The a length of L2 of drag-line rope, F1 approximates F2.After carrying, the drag-line rope length of left front drag-line 15 and right fore stay 16 changes.
As the deflection maximum permissible value fb of the arm 2 reached shown in Fig. 7 b, a length of L3 of drag-line rope of left front drag-line 15, before the right side
The a length of L4 of drag-line rope of drag-line 16, and F3 > F4, and the difference of F3 and F4 is gradually increased.If now continuing to hang load, then can produce
In raw Fig. 7 b, the arm 2 serpentine deformation shown in dotted line, produces crane system unstability, structural deterioration, causes danger.
Side sway compensator 17 in the crane super lifting device of application the present embodiment, can allow arm 2 to produce certain side sway, release
" excessive " of side sway controls, and protects arm.
Specifically, as shown in Fig. 6, Fig. 7 a, Fig. 7 c and Fig. 8, because F3 > F4, left front drag-line 15 and right fore stay 16 are made
For about the axial force of side sway compensator 17, when the difference of above-mentioned axial force reaches the difference load of compressible/draw springs
After lotus, left elastic component 173 will be made to be compressed, right elastic component 174 is stretched.After the effect of side sway compensator 17, as
Shown in Fig. 7 c, a length of L5=L1+L ' of left front drag-line 15, a length of L6=L2-L ' of right fore stay 16, now arm 2
Deflection be fc, and fc ＜ fb, the side sway of such crane system then will not produce S-shaped, and the deformation of arm 2 is used in figure 7 c
Dotted line shows, and then prevents crane system from producing unstability, improves lifting capacity.
As shown in Figure 6, in the crane super lifting device of the present embodiment, stopper section 171a is baffle ring.Baffle ring simple in construction,
Convenient installation.
As shown in Figure 6, in the crane super lifting device of the present embodiment, the distance phase at stopper section 171a and the two ends of mandrel 171
Deng.Said structure makes to be positioned at the left elastic component 173 of 171a both sides, stopper section and right elastic component 174 is evenly distributed, and stress is more equal
Even.
As shown in Figure 6 and Figure 8, in the crane super lifting device of the present embodiment, side sway compensator 17 also includes for obtaining the heart
The position monitoring device 176 of axle 171 displacement, position monitoring device 176 is arranged on arm 2.Position monitoring device 176 is preferred
For displacement transducer.The quantity of displacement transducer can be arranged according to actual needs, and it can also be multiple for can being one.When
Position monitoring device 176 detects when side sway exceedes compensation range, can send signal, cuts off the action continuing lifting, stops
Heavy work, protects crane system.
As shown in Figure 6 and Figure 8, in the crane super lifting device of the present embodiment, stopper section 171a has towards position monitoring dress
Put the tip of 176 extensions.Said structure makes the detection of position monitoring device 176 more accurate.
As shown in Figure 6 and Figure 8, in the crane super lifting device of the present embodiment, left elastic component 173 is for being set in mandrel 171
On left spring, right elastic component 174 is the right spring being set in mandrel 171.Spring structure is simple, and elastic performance is good, valency
Lattice are cheap.
As shown in Figure 6 and Figure 8, in the crane super lifting device of the present embodiment, the first end of mandrel 171 has for installing
First installing hole of left front drag-line 15, the second end of mandrel 171 has the second installing hole for installing right fore stay 16.On
State structure for installing left front drag-line 15 and right fore stay 16.
As it is shown in figure 5, the crane super lifting device of the present embodiment also includes left back drag-line 11 and right backstay 12.Left back drag-line 11
The first end be connected with left mast 13, the first end of right backstay 12 is connected with right mast 14.Second end of left back drag-line 11 and
Second end of right backstay 12 is all connected with arm 2.Wherein, left back drag-line 11 is independently arranged with left front drag-line 15, right post-tensioning
Rope 12 is independently arranged with right fore stay 16.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect: side sway compensator 17
Allow crane system to have certain side sway value, prevent because of arm 2 overload, operate that speed of gyration is too fast, wind load and other load
The side sway excessive generation unstability caused, thus prevent arm 2 from folding arm occurring, protect crane system, and make to compensate in side sway
In the range of can carry out hoisting operation, thus improve lifting capacity.
Present invention also provides a kind of crane, include above-mentioned according to the embodiment (not shown) of the crane of the application
Heavy-duty machine super lifting device.Owing to having above-mentioned crane super lifting device, the lifting capacity of the crane of the present embodiment has obtained significantly
Improve.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a crane super lifting device, including:
Left mast (13) and right mast (14), be arranged on the arm (2) of crane；
Left front drag-line (15), the first end of described left front drag-line (15) is connected with described left mast (13)；
Right fore stay (16), the first end of described right fore stay (16) is connected with described right mast (14),
It is characterized in that, described crane super lifting device also includes:
Side sway compensator (17), described side sway compensator (17) is arranged on described arm (2), and described side sway compensates
Device (17) is connected between the second end and second end of described right fore stay (16) of described left front drag-line (15), when
When the stress difference of described left front drag-line (15) and described right fore stay (16) reaches preset value, described side sway compensator
(17) can be subjected to displacement, and then described left front drag-line (15) and described right fore stay (16) produce linkage so that described
There is side sway in arm (2).
Crane super lifting device the most according to claim 1, it is characterised in that described side sway compensator (17) includes mandrel
(171), described mandrel (171) is connected to the second end of described left front drag-line (15) and described right fore stay (16)
Between second end.
Crane super lifting device the most according to claim 2, it is characterised in that
Stopper section (171a) it is provided with in described mandrel (171)；
Described side sway compensator (17) also includes:
Right baffle-plate (172) and right baffle plate (175), be fixedly installed on described arm (2), and described mandrel (171) can
Being located in movably in described right baffle-plate (172) and described right baffle plate (175), described stopper section (171a) is positioned at institute
State between right baffle-plate (172) and described right baffle plate (175)；
Left elastic component (173), is arranged between described right baffle-plate (172) and described stopper section (171a)；
Right elastic component (174), is arranged between described right baffle plate (175) and described stopper section (171a).
Crane super lifting device the most according to claim 3, it is characterised in that described stopper section (171a) is baffle ring.
5. according to the crane super lifting device described in claim 3 or 4, it is characterised in that described stopper section (171a) and the described heart
The distance at the two ends of axle (171) is equal.
6. according to the crane super lifting device described in claim 3 or 4, it is characterised in that described side sway compensator (17) is also wrapped
Include: be used for obtaining the position monitoring device (176) of described mandrel (171) displacement, described position monitoring device (176)
It is arranged on described arm (2).
Crane super lifting device the most according to claim 6, it is characterised in that described position monitoring device (176) is position
Displacement sensor.
Crane super lifting device the most according to claim 6, it is characterised in that described stopper section (171a) has towards described
The tip that position monitoring device (176) extends.
Crane super lifting device the most according to claim 3, it is characterised in that described left elastic component (173) is for being set in
Stating the left spring in mandrel (171), described right elastic component (174) is for be set in the right spring in described mandrel (171).
10. a crane, including crane super lifting device, it is characterised in that described crane super lifting device is claim 1 to 9
According to any one of crane super lifting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410776943.3A CN104477793B (en) | 2014-12-15 | 2014-12-15 | Crane super lifting device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410776943.3A CN104477793B (en) | 2014-12-15 | 2014-12-15 | Crane super lifting device and crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104477793A CN104477793A (en) | 2015-04-01 |
| CN104477793B true CN104477793B (en) | 2016-08-24 |
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ID=52752441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410776943.3A Active CN104477793B (en) | 2014-12-15 | 2014-12-15 | Crane super lifting device and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104477793B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582050B (en) * | 2021-07-30 | 2023-08-29 | 三一汽车起重机械有限公司 | Side bending correction device and method for crane boom and crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19802187C2 (en) * | 1998-01-16 | 1999-11-25 | Mannesmann Ag | Device for bracing a superlift device of a telescopic crane |
| CN102659038A (en) * | 2012-05-17 | 2012-09-12 | 中联重科股份有限公司 | Crane and superlift device thereof |
| CN102745605A (en) * | 2012-07-12 | 2012-10-24 | 中联重科股份有限公司 | Control equipment, method, system and engineering machine for retractable rope compensation of guying device |
| CN102942127A (en) * | 2012-12-07 | 2013-02-27 | 中联重科股份有限公司 | Post-tensioning adjusting device and crane |
| CN103010969A (en) * | 2012-12-07 | 2013-04-03 | 中联重科股份有限公司 | Crane, guying mast and pulling pre-tightening device of guying mast |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20020974U1 (en) * | 2000-12-12 | 2002-04-25 | Liebherr Werk Ehingen | mobile crane |
| DE102009048846A1 (en) * | 2009-10-09 | 2011-04-21 | Liebherr-Werk Ehingen Gmbh | crane |
| CN102701086A (en) * | 2012-06-18 | 2012-10-03 | 上海三一科技有限公司 | Method and device for improving lateral load capacity of arm support, and crane |
-
2014
- 2014-12-15 CN CN201410776943.3A patent/CN104477793B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19802187C2 (en) * | 1998-01-16 | 1999-11-25 | Mannesmann Ag | Device for bracing a superlift device of a telescopic crane |
| CN102659038A (en) * | 2012-05-17 | 2012-09-12 | 中联重科股份有限公司 | Crane and superlift device thereof |
| CN102745605A (en) * | 2012-07-12 | 2012-10-24 | 中联重科股份有限公司 | Control equipment, method, system and engineering machine for retractable rope compensation of guying device |
| CN102942127A (en) * | 2012-12-07 | 2013-02-27 | 中联重科股份有限公司 | Post-tensioning adjusting device and crane |
| CN103010969A (en) * | 2012-12-07 | 2013-04-03 | 中联重科股份有限公司 | Crane, guying mast and pulling pre-tightening device of guying mast |
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| CN104477793A (en) | 2015-04-01 |
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