CN202296915U - Crane, super-lifting device and pre-tightening mechanism of super-lifting device - Google Patents
Crane, super-lifting device and pre-tightening mechanism of super-lifting device Download PDFInfo
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- CN202296915U CN202296915U CN 201120341740 CN201120341740U CN202296915U CN 202296915 U CN202296915 U CN 202296915U CN 201120341740 CN201120341740 CN 201120341740 CN 201120341740 U CN201120341740 U CN 201120341740U CN 202296915 U CN202296915 U CN 202296915U
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- turning member
- crane
- lifting device
- surpassed
- mast
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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
- B66C23/82—Luffing gear
- B66C23/821—Bracing equipment for booms
- B66C23/823—Bracing equipment acting in vertical direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The utility model provides a crane, a super-lifting device and a pre-tightening mechanism of the super-lifting device. The pre-tightening mechanism comprises a linear part, a first steering part, a second steering part and a third steering part, wherein the first end of the linear part is fixedly arranged on a reel mechanism; the first steering part is arranged on a super-lifting mast; the second steering part is arranged at the front part of the boom of the crane or is arranged between the front part of the boom and the first steering part; and the third steering part is arranged on the super-lifting mast at a position beyond the first steering part. After the linear part sequentially passes through the first steering part, the second steering part and the third steering part from the reel mechanism, the second end of the linear part is fixedly arranged on a pre-tightening oil cylinder. The crane, the super-lifting device and the pre-tightening mechanism realize the wiring layout of the linear part and have the advantages that the stability is good, the pre-tightening oil cylinder is protected, the deflection of the super-lifting mast is small and the like.
Description
Technical field
The utility model relates to engineering machinery field, specifically, relates to a kind of crane super lifting device and preceding tensioner mechanism thereof, and the hoisting crane that comprises this preceding tensioner mechanism, super lifting device.
Background technology
Crane arm is the core component of hoisting crane, is that hoisting crane hangs year most important load-bearing structural member of operation.The technology content of crane arm structure is the important symbol of hoisting crane product level.
In order to make hoisting crane have bigger lifting altitude, the crane arm of hoister in large tonnage is more and more longer, and lift heavy is more and more heavier, and operating mode is more and more abominable.Owing to bigger, make that the amount of deflection of crane arm on luffing plane and plane of rotation is all bigger, and this amount of deflection made that the stressing conditions of crane arm is relatively poor, thereby has limited the hoisting capacity and the load-carrying capacity of hoisting crane perpendicular to the component of crane arm downward direction by the handling thing.In addition, the stressed of hoister in large tonnage amplitude oil cylinder also obviously increases, and the diameter accretion of amplitude oil cylinder has influenced complete machine general design and layout.
For alleviating amount of deflection and the stressed problem of amplitude oil cylinder, generally can on the crane arm of hoister in large tonnage, super lifting device be set, to improve the strained condition of crane arm, improve the hoisting capacity and the load-carrying capacity of hoisting crane.
Yet; In the prior art; The strained condition of the less consideration super lifting device of those skilled in the art self; Such as the amount of deflection problem that has surpassed mast and the winding mode of preceding tensioner mechanism, all the overall performance influence to super lifting device is bigger, and unreasonable structure may influence the working stability of super lifting device.
Along with the fast development that Chinese national economy is built, the speeding up the construction of various heavy constructions, increase the increasing demand of construction machinery and equipment the camp site, also increasingly high to its performance demands.Therefore, how realizing a kind of super lifting device of function admirable, to satisfy user's demand increasing to construction machinery and equipment, is the technical matters that those skilled in the art need to be resolved hurrily.
The utility model content
In order to overcome the above-mentioned defective and the deficiency of prior art, the purpose of the utility model is to provide a kind of crane super lifting preceding tensioner mechanism, and this mechanism can effectively improve the whole force-bearing situation of super lifting device.
Tensioner mechanism before the crane super lifting of the utility model comprises:
Linear unit, first end of said linear unit is fixed on the drum mechanism built;
First turning member, said first turning member is arranged on and has surpassed on the mast;
Second turning member, said second turning member are positioned at the crane arm front portion of said hoisting crane, or between the crane arm front portion and first turning member;
The 3rd turning member, said the 3rd turning member are arranged on and have surpassed the position beyond first turning member on the mast;
Said linear unit begins from drum mechanism built, pass through said first turning member, second turning member, the 3rd turning member successively after, its second end is fixed on the pretension oil cylinder.
Preferred as technique scheme, said first turning member and/or the 3rd turning member are fixed pulley, said the 3rd turning member is arranged on first turning member below.
Preferred as technique scheme, said second turning member crane arm anterior with first turning member between, said second turning member is a movable pulley, the support component of said movable pulley is connected with the crane arm front portion.
Preferred as technique scheme, the support component of said movable pulley is connected through steel rope with the crane arm front portion.
Preferred as technique scheme, said pretension oil cylinder is arranged at and has surpassed in the mast.
Another purpose of the utility model is to provide a kind of crane super lifting device, and said super lifting device comprises and surpassed mast, back tensioner mechanism that this super lifting device also comprises tensioner mechanism before the aforesaid crane super lifting.
Preferred as technique scheme, said drum mechanism built is arranged on and surpass on the mast, and is positioned at and has surpassed the position that mast is close to the bottom.
Preferred as technique scheme, the said mast that surpassed be through on the crane arm that has surpassed pedestal and be articulated in hoisting crane, said surpassed to be provided with between pedestal and the said crane arm surpassed amplitude oil cylinder 8.
Preferred as technique scheme, said super lifting device comprise tensioner mechanism before two groups of aforesaid crane super liftings.
Another purpose of the utility model is to provide a kind of hoisting crane, and this hoisting crane comprises preceding tensioner mechanism of aforesaid crane super lifting or crane super lifting device.
The hoisting crane of the utility model, super lifting device and preceding tensioner mechanism thereof have been realized the winding placement of linear unit through each turning member.Compared with prior art, the utility model is in the process of pretension oil cylinder fore and aft motion adjustment linear unit pulling force, and skew, good stability can not appear in pretension oil cylinder integral body; In addition, the utility model has been avoided influence and the interference of external environment to the pretension oil cylinder, helps protecting the pretension oil cylinder; And, the utility model in the course of the work, erect to have surpassed the mast amount of deflection little, in the improved while of strained condition that guarantees crane arm, the whole strained condition of super lifting device also is improved.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the super lifting device of the utility model one embodiment;
Fig. 2 is the block diagram that has surpassed mast of the utility model one embodiment.
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Shown in Figure 1 is the structural representation of the super lifting device of the utility model one embodiment.The super lifting device of the utility model is used for hoisting crane, and this hoisting crane can comprise crawler crane or various wheel crane (like car hosit, full ground hoisting crane, rough terrain wheeled crane or lorry-mounted crane) etc.Most preferably, the super lifting device of the utility model is used for full ground hoisting crane, the requirement thereby adaptation large-tonnage hoisting operation demand and different ground-surface go.
As shown in Figure 1, the super lifting device of the utility model comprises preceding tensioner mechanism at least, has surpassed mast 3 and back tensioner mechanism 6.Because the winding mode of preceding tensioner mechanism and structure are bigger to the stressed and overall performance influence of super lifting device, the utility model provides a kind of technical scheme that can effectively improve the super lifting device strained condition.
Tensioner mechanism comprises linear unit 1, first turning member 10, second turning member 20 and the 3rd turning member 30 at least before the crane super lifting of the utility model.Wherein linear unit 1 has two ends, and its first end is fixed on the drum mechanism built 2, and second end is fixed on the pretension oil cylinder 5.Each turning member through the utility model between first end and second end winds the line and turns to.This linear unit 1 can be the linear load parts of various material such as steel rope or iron chains, and the utility model is not limited to this.
Wherein first turning member 10 is arranged on and has surpassed on the mast 3, and the 3rd turning member 30 is arranged on and has surpassed the position beyond first turning member 10 on the mast 3.First turning member 10 can be arranged on the 3rd turning member 30 tops (embodiment as shown in Figure 1), also can be arranged on the 3rd turning member 30 belows, and the utility model is not limited to this, preferably the former.First turning member 10 and the 3rd turning member 30 can be arranged on a plurality of positions that surpassed on the mast 3, and preferably they all are arranged on the contiguous position that has surpassed mast 3 tops.In addition, first turning member 10 and the 3rd turning member 30 can be structures such as fixed pulley, hook, projection, annulus, mistake line bracket, and the utility model is not limited to this.Preferred first turning member 10 and/or the 3rd turning member 30 are fixed pulley, and this fixed pulley is supported in and has surpassed on the mast 3.
Second turning member 20 is positioned at crane arm 4 front portions of hoisting crane, or between crane arm 4 front portions and first turning member 10.Second turning member 20 can be structures such as fixed pulley, hook, projection, annulus, mistake line bracket, and the utility model is not limited to this.Be positioned at crane arm 4 when anterior at second turning member 20, itself and crane arm 4 direct connections.Preferably, embodiment as shown in Figure 1, second turning member 20 is between crane arm 4 front portions and first turning member 10, and second turning member 20 is a movable pulley, the support component of movable pulley and 4 anterior connections of crane arm.Movable pulley rotates in this support component, and this support component can be connected through parts such as pull bar or stay cords with crane arm 4 front portions, to carry out the transmission of pulling force.Preferably, the support component of movable pulley is connected (being to connect indirectly in addition, between them) with crane arm 4 front portions through steel rope.Should be understood that the front portion of crane arm 4 is for its mode of operation, this front portion can also be provided with the suspension hook of handling weight simultaneously.
The linear unit 1 of the utility model is from drum mechanism built 2 beginning, and through behind first turning member 10, second turning member 20, the 3rd turning member 30, its second end is fixed on the pretension oil cylinder 5 successively.Under different actual conditions, can adjust the pulling force of linear unit through the fore and aft motion of this pretension oil cylinder 5 as required.This pretension oil cylinder 5 can be arranged on a plurality of positions, and preferred pretension oil cylinder 5 is arranged at and has surpassed in the mast 3.Second end of linear unit 1 can be fixed on the pretension oil cylinder 5 with multiple angles, preferably, linear unit 1 through the 3rd turning member 30 after, the axis parallel of its direction and pretension oil cylinder 5 piston rods or overlap.This winding mode of linear unit 1 also can be so that be arranged on pretension oil cylinder 5 and have surpassed in the mast 3, thereby help protecting pretension oil cylinder 5.
After adopting the technique scheme of the utility model, in the process of pretension oil cylinder 5 fore and aft motion adjustment linear unit 1 pulling force, skew, good stability can not appear in pretension oil cylinder 5 integral body; In addition; The utility model has also been avoided influence and the interference of external environment to pretension oil cylinder 5; Help protecting pretension oil cylinder 5 especially to protect the detecting element (like position or pressure-detecting device) that is provided with on the pretension oil cylinder 5, help improving the accuracy of detection of detecting element.
The drum mechanism built 2 of the super lifting device of the utility model can be arranged on and surpass on the mast 3, also can be supported in other mechanics of hoisting crane, and the utility model is not limited to this.Preferably, as depicted in figs. 1 and 2, this drum mechanism built 2 is arranged on and has surpassed on the mast 3, and is positioned at the position that has surpassed mast 3 contiguous bottoms.This reel can adopt multiple rotary execution unit to drive, and the utility model is not limited to this.After adopting technique scheme; The utility model has been adjusted and has been surpassed mast 3 whole centers of gravity, in the course of the work, erect to have surpassed mast 3 amounts of deflection little; In the improved while of strained condition that guarantees crane arm 4, the whole strained condition of super lifting device also is improved.
Having surpassed mast 3 and can being fixed on the crane arm 4 of the utility model preferably should surpass mast 3 and be arranged on swingably on the crane arm 4.Should surpass mast 3 can be through having surpassed on the crane arm 4 that pedestal 7 is articulated in hoisting crane, surpassed to be provided with between pedestal 7 and the crane arm 4 and surpassed amplitude oil cylinder 8.Can realize having surpassed the adjustment of mast 3 pitch angle through the fore and aft motion that has surpassed amplitude oil cylinder 8.
As an embodiment, the super lifting device of the utility model comprises the preceding tensioner mechanism of two groups of aforesaid crane super liftings.Correspondingly, as shown in Figure 2, surpassed mast 3 and formed by the two symmetrical groups vertical rod.Should be understood that when adopting the preceding tensioner mechanism of other quantity, can realize the technique effect of the utility model equally, the utility model is not limited to this.
First end of back tensioner mechanism 6 is arranged on and has surpassed on the mast 3, and second end is arranged on the afterbody of crane arm 4 or is arranged on the mechanical parts such as turntable of hoisting crane.This back tensioner mechanism 6 can comprise rope row and telescopic oil cylinder or tighten up structure such as winch that the utility model is not limited to this.Preceding tensioner mechanism applies pulling force to the head of crane arm 4, and 6 pairs of back tensioners mechanism have surpassed mast 3 and applied pulling force, thereby realizes having surpassed mast 3 single-piece balances.
Except tensioner mechanism and crane super lifting device before the aforementioned crane super lifting, the utility model also provides a kind of hoisting crane that comprises aforementioned preceding tensioner mechanism or super lifting device.Other structure of this hoisting crane can be with reference to prior art, and this paper repeats no more at this.Preferably, this hoisting crane is specially full ground hoisting crane.
To sum up, the hoisting crane of the utility model, super lifting device and preceding tensioner mechanism thereof have been realized the winding placement of linear unit 1 through each turning member.Compared with prior art, the utlity model has following advantage:
1) good stability
The winding mode of the utility model is reasonable, linear unit 1 through first turning member 10, second turning member 20 after, turn to and be connected from the 3rd turning member 30 with ultra mast 3 interior pretension oil cylinders 5.In the process of pretension oil cylinder 5 fore and aft motion adjustment linear unit 1 pulling force, skew, good stability can not appear in pretension oil cylinder 5 integral body.
2) help protecting the pretension oil cylinder
The utility model is through special coiling design; Pretension oil cylinder 5 is arranged at surpassed in the mast 3; Avoided influence and the interference of external environment to pretension oil cylinder 5; Help protecting pretension oil cylinder 5 especially to protect the detecting element that is provided with on the pretension oil cylinder 5, help improving the accuracy of detection of detecting element.
3) it is little to have surpassed the mast amount of deflection
The utility model is arranged on drum mechanism built 2 and has surpassed on the mast 3, and is positioned at the position that has surpassed mast 3 contiguous bottoms, has adjusted to have surpassed mast 3 whole centers of gravity.In the course of the work, erect to have surpassed mast 3 amounts of deflection little, in the improved while of strained condition that guarantees crane arm 4, the whole strained condition of super lifting device also is improved.
Clearly, the utility model provides a kind of crane super lifting device of function admirable, and the beneficial effect of the utility model is conspicuous.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. the preceding tensioner mechanism of crane super lifting is characterized in that, comprising:
Linear unit (1), first end of said linear unit (1) are fixed on the drum mechanism built (2);
First turning member (10), said first turning member (10) are arranged on and have surpassed on the mast (3);
Second turning member (20), said second turning member (20) are positioned at crane arm (4) front portion of said hoisting crane, or are positioned between crane arm (4) front portion and first turning member (10);
The 3rd turning member (30), said the 3rd turning member (30) are arranged on and have surpassed last first turning member of mast (3) (10) position in addition;
Said linear unit (1) is from said drum mechanism built (2) beginning, pass through said first turning member (10), second turning member (20), the 3rd turning member (30) successively after, its second end is fixed on the pretension oil cylinder (5).
2. tensioner mechanism before according to claim 1 is characterized in that said first turning member (10) and/or the 3rd turning member (30) are fixed pulley, and said the 3rd turning member (30) is arranged on first turning member (10) below.
3. tensioner mechanism before according to claim 1; It is characterized in that; Said second turning member (20) is positioned between crane arm (4) front portion and first turning member (10), and said second turning member (20) is a movable pulley, and the support component of said movable pulley is connected with crane arm (4) is anterior.
4. tensioner mechanism before according to claim 3 is characterized in that, the support component of said movable pulley is connected through steel rope with crane arm (4) is anterior.
5. according to each described preceding tensioner mechanism of claim 1-4, it is characterized in that said pretension oil cylinder (5) is arranged at said having surpassed in the mast (3).
6. crane super lifting device, said super lifting device comprise and have surpassed mast (3), back tensioner mechanism (6), it is characterized in that, said super lifting device also comprises tensioner mechanism before each described crane super lifting of claim 1-5.
7. super lifting device according to claim 6 is characterized in that, said drum mechanism built (2) is arranged on and has surpassed on the mast (3), and is positioned at the position that has surpassed the contiguous bottom of mast (3).
8. super lifting device according to claim 6 is characterized in that, the said mast (3) that surpassed is through on the crane arm (4) that has surpassed pedestal (7) and be articulated in hoisting crane, said surpassed to be provided with between pedestal (7) and the said crane arm (4) surpassed amplitude oil cylinder (8).
9. according to each described super lifting device of claim 6-8, it is characterized in that said super lifting device comprises the preceding tensioner mechanism of two groups of crane super liftings.
10. a hoisting crane is characterized in that, said hoisting crane comprises the preceding tensioner mechanism of each described crane super lifting of claim 1-5 or each described crane super lifting device of claim 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120341740 CN202296915U (en) | 2011-09-14 | 2011-09-14 | Crane, super-lifting device and pre-tightening mechanism of super-lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120341740 CN202296915U (en) | 2011-09-14 | 2011-09-14 | Crane, super-lifting device and pre-tightening mechanism of super-lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202296915U true CN202296915U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120341740 Expired - Fee Related CN202296915U (en) | 2011-09-14 | 2011-09-14 | Crane, super-lifting device and pre-tightening mechanism of super-lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202296915U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103407908A (en) * | 2013-08-29 | 2013-11-27 | 徐州重型机械有限公司 | Crane and front tensioning system of super lifting device thereof |
| CN103552938A (en) * | 2013-11-14 | 2014-02-05 | 徐州重型机械有限公司 | Crane and super-lift winch locking mechanism thereof |
| CN104401888A (en) * | 2014-10-30 | 2015-03-11 | 三一汽车起重机械有限公司 | Super lift apparatus and crane |
| CN106586849A (en) * | 2016-12-27 | 2017-04-26 | 中国冶集团有限公司 | Automatic adjusting device and method of crane auxiliary bracing |
-
2011
- 2011-09-14 CN CN 201120341740 patent/CN202296915U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103407908A (en) * | 2013-08-29 | 2013-11-27 | 徐州重型机械有限公司 | Crane and front tensioning system of super lifting device thereof |
| CN103552938A (en) * | 2013-11-14 | 2014-02-05 | 徐州重型机械有限公司 | Crane and super-lift winch locking mechanism thereof |
| CN103552938B (en) * | 2013-11-14 | 2015-12-16 | 徐州重型机械有限公司 | A kind of hoisting crane and super lift winch lockable mechanism thereof |
| CN104401888A (en) * | 2014-10-30 | 2015-03-11 | 三一汽车起重机械有限公司 | Super lift apparatus and crane |
| CN106586849A (en) * | 2016-12-27 | 2017-04-26 | 中国冶集团有限公司 | Automatic adjusting device and method of crane auxiliary bracing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20150914 |
|
| EXPY | Termination of patent right or utility model |