CN103641000A - Crane and super-lifting device thereof - Google Patents
Crane and super-lifting device thereof Download PDFInfo
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- CN103641000A CN103641000A CN201310695592.9A CN201310695592A CN103641000A CN 103641000 A CN103641000 A CN 103641000A CN 201310695592 A CN201310695592 A CN 201310695592A CN 103641000 A CN103641000 A CN 103641000A
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Abstract
The invention discloses a super-lifting device. The super-lifting device comprises a super-lifting main arm (13), a winding mechanism (17) wound with a steel wire rope and a range-changing support (14) to be connected with a boom of a crane, wherein the winding mechanism (17) and the range-changing support (14) are respectively connected with the two end parts of the super-lifting main arm (13), and the super-lifting main arm (13) is at least provided with a section of girder arm structure. The super-lifting device provided by the invention has the advantages that the super-lifting main arm is provided with the girder arm structure, the face area of the girder arm structure is small, the stress of the super-lifting device in a horizontal direction is greatly reduced, the bending moment generated by wind resistance is greatly reduced, the deformation of the super-lifting main arm is reduced, the wind-load-resisting capacity of the super-lifting device is improved, and the lifting stability of the crane is improved; the weight of the super-lifting main arm with the girder arm structure is less than the weight of the box-type super-lifting main arm in the prior art when the super-lifting main arms are the same in length. The invention also discloses the crane with the super-lifting device.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of hoisting crane and super lifting device thereof.
Background technology
Super lifting device is the important jib structure that super-tonnage crane product promotes main crane arm, has hoisting capacity large, and lifting altitude is high, good stability, the feature such as the little and luffing scope of conducting oneself with dignity is large.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of typical super lifting device in prior art.
Usually, super lifting device comprises and has surpassed principal arm (be divided into and surpassed left arm 1 and surpassed right arm 5 according to the difference of control position), each has surpassed principal arm correspondence and has been provided with luffing bearing 7, amplitude oil cylinder 2, launches the parts such as oil cylinder 3, hoisting mechanism 6, surpassed principal arm hoisting mechanism 6 and luffing bearing 7 is connected to the both ends that surpassed principal arm, on luffing bearing 7, be hinged with amplitude oil cylinder 2, the two ends of launching oil cylinder 3 connect respectively luffing bearing 7 and have surpassed principal arm, both are hinged to have surpassed principal arm and luffing bearing 7, under the effect that launches oil cylinder 3, can relatively launch or close up.
Super lifting device connects the crane arm of hoisting crane by the luffing bearing 7 arranging on it, usually, for Telescopic crane, super lifting device is arranged at the leading section of basic arm, that is to say, the leading section of basic arm is provided with the mounting structure being fixedly connected with luffing bearing 7.When super lifting device carries out work, operating personal is first controlled amplitude oil cylinder 2 and is stretched out, super lifting device is slowly risen, until surpassed principal arm, roughly become plumbness with telescopic boom, and then control expansion oil cylinder 3 actions (extending or retraction), under the action of hydraulic force of expansion oil cylinder 3, surpassed principal arm and will in horizontal surface, launch certain angle, when being expanded to proper angle, thereby launching oil cylinder 3, locking will two surpass the locking position of principal arm.
In prior art, surpass principal arm and be generally box-structure, box-structure is welded by sheet material, like this, the weight ratio that has surpassed on the one hand principal arm is larger, and this wind area that has surpassed principal arm is larger on the other hand, correspondingly, surpass principal arm and when work, be easily subject to a larger horizontal direction air draught, produce additional bending moment, cause distortion, had a strong impact on the performance of super lifting device performance.
In addition, hoisting crane tonnage is larger, telescopic boom is longer, but be subject to the restriction of car load height and width, the slender proportion that plays telescopic boom increases, cause telescopic boom poor rigidity, structural stability is subject to impact to a certain extent, in order to make telescopic boom in working order in reasonable state, super lifting device agent structure also must be done longer and longer, this will arrange and bring certain difficulty to complete machine, how effectively under large brachium mode of operation, to realize the increase of super lifting device length, can have a rational length at transportation and installing condition maintenance super lifting device is again also technical matters urgently to be resolved hurrily.
Therefore, how improving the structure of super lifting device in prior art, improve super lifting device work force-bearing situation, improve lifting performance, is those skilled in that art's technical matterss urgently to be resolved hurrily.
Summary of the invention
Object of the present invention is for providing a kind of super lifting device, and this super lifting device has higher wind load resistance ability, can greatly improve the lifting performance of hoisting crane.Another object of the present invention is for providing a kind of hoisting crane with above-mentioned super lifting device.
For solving the problems of the technologies described above, the invention provides a kind of super lifting device, comprise the hoisting mechanism that surpassed principal arm, be wound with steel rope with for being connected the luffing bearing of the crane arm of hoisting crane, described hoisting mechanism and described luffing bearing are connected to the described both ends that surpassed principal arm, and the described principal arm that surpassed at least has one section of truss arm structure.
Preferably, the described principal arm that surpassed comprises jib main body and the arm tail being connected with described jib main body, and the head end of described jib main body connects described hoisting mechanism, and described arm tail connects described luffing bearing, and described jib main body is truss arm structure.
Preferably, described truss arm structure and described hoisting mechanism are hinged, and the connecting end surface corner location that is positioned at described truss arm structure is provided with four hinged seats, and the relevant position of described hoisting mechanism is provided with the hinged seat matching.
Preferably, described arm tail is connected with described jib main body welding manner.
Preferably, also comprise pre-locking oil cylinder, described pre-locking oil cylinder is placed in the inside of described truss arm structure.
Preferably, described super lifting device also comprises that one end is connected in and has surpassed back balance device in described super lift winch mechanism, is also provided with the described storage member that has surpassed back balance device after fixing gathering in described jib main body.
Preferably, described arm tail is box-structure, and it is hinged by aft mounted hinged seat and described luffing bearing.
Preferably, the two ends of the expansion oil cylinder of the described super lifting device hinged described arm tail of difference and described luffing bearing.
Preferably, also comprise lengthening truss arm, described jib main body is arranged at and is connected described hoisting mechanism by described lengthening truss arm.
Compare with the principal arm that surpassed of box in prior art, the principal arm that surpassed in the present invention has truss arm structure, truss arm structure wind area is smaller, can greatly reduce to have surpassed the stressed of principal arm horizontal direction, greatly reduce the moment of flexure producing due to windage, reduce to have surpassed the distortion of principal arm, thereby promoted the wind load resistance ability of super lifting device, improved the lifting stability of hoisting crane.And, equal length surpassed principal arm, there is box in the weight ratio prior art that has surpassed principal arm of truss arm structure and surpassed the lightweight of principal arm.
Meanwhile, surpass left and right arms and adopted truss structure, also can improve removal efficiency so that the dismounting of hydraulic pressure electric elements has strengthened easy accessibility, reduced maintenance cost.
A kind of preferred embodiment in, also comprise lengthening truss arm, described jib main body is arranged at and is connected described hoisting mechanism by described lengthening truss arm, can, according to the demand of using, increase the lengthening truss arm of right quantity in jib main body like this.In addition, lengthen truss arm and jib main body and can take travelling position apart, can avoid like this super lifting device transportation to surpass the problem of specified length, be convenient to transportation.
Lengthen truss arm and can have the structure identical with the truss structure that has surpassed principal arm, lengthening truss arm can be quadrangle truss structure, by main chord and web member, is welded; Two ends are all welded with jointing, and each four, wherein one end connector is single plate structure and is processed with for wearing the hole of axle, and other end joint is bayonet coupling joint.Super lifting device extension version is not limited to the truss structure described in the embodiment of the present invention.
On the basis of above-mentioned super lifting device, the present invention also provides a kind of hoisting crane, comprises chassis, is arranged at the lifting basic arm on chassis and is connected in the super lifting device on lifting basic arm, and super lifting device is above-mentioned super lifting device.
Because hoisting crane has above-mentioned super lifting device, therefore hoisting crane also has the technique effect of above-mentioned super lifting device.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of typical super lifting device in prior art;
Fig. 2 is the structural representation of super lifting device in a kind of specific embodiment of the present invention;
Fig. 3 is the structural representation that has surpassed principal arm of super lifting device shown in Fig. 2;
Fig. 4 be super lifting device shown in Fig. 2 surpassed the structural representation of principal arm when a certain mode of operation;
Fig. 5 is structural representation when super lifting device is in running order in the another kind of specific embodiment of the present invention;
Fig. 6 is the structural representation of the lengthening truss arm of super lifting device in Fig. 5.
Wherein, in Fig. 1, the one-to-one relationship between Reference numeral and component names is as follows:
1 having surpassed left arm, 2 amplitude oil cylinder, 3 launches oil cylinders, 5 has surpassed right arm, 6 hoisting mechanisms, 7 luffing bearings.
Wherein, in Fig. 2 to Fig. 6, the one-to-one relationship between Reference numeral and component names is as follows:
10a main chord, 10b web member, pre-tightening mechanism before 11 having surpassed, steel rope before 111 having surpassed, 112 pre-locking oil cylinders, 113 zoom rate movable pulleys, 114 turn to fixed pulley, 115 pairs of arm-ties, 12 amplitude oil cylinder, 13 surpassed principal arm, 131 arm tails, 132 jib main bodys, 1321 hinged seats, 133 lengthen truss arm, 133a single plate structure, 133b double plate structure, 134 storage members, 14 luffing bearings, 15 launch oil cylinder, 16 surpassed back balance device, 17 hoisting mechanisms, 18 launch bearing, 19 surpassed main shaft, 1310 launch hinge axle, 141 luffing hinge axles, 31 turntables, 32 basic arms, 34 telescopic booms.
The specific embodiment
Core of the present invention is for providing a kind of super lifting device, and this super lifting device has higher wind load resistance ability, can greatly improve the lifting performance of hoisting crane.Another core of the present invention is for providing a kind of hoisting crane with above-mentioned super lifting device.
Without loss of generality, the telescopic arm crane of take is herein introduced technical scheme as example, it will be understood by those skilled in the art that the technical program is not limited to telescopic arm crane, also can be applied in other types construction machinery and equipment.
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 2-4, Fig. 2 is the structural representation of super lifting device in a kind of specific embodiment of the present invention; Fig. 3 is the structural representation that has surpassed principal arm of super lifting device shown in Fig. 2; Fig. 4 be super lifting device shown in Fig. 2 surpassed the structural representation of principal arm when a certain mode of operation.
The invention provides a kind of super lifting device, comprise the hoisting mechanism 17 that surpassed principal arm, be provided with steel rope with for being connected the luffing bearing 14 of the crane arm of hoisting crane, hoisting mechanism 17 and luffing bearing 14 are connected to the both ends that surpassed principal arm, usually, on luffing bearing 14, be hinged with amplitude oil cylinder 12, the other end of amplitude oil cylinder 12 is used for connecting telescopic boom 34, and under the promotion of amplitude oil cylinder 12 or pulling, super lifting device relatively telescopic boom 34 launches or closes up in perpendicular; Super lifting device also comprises that the two ends of launching oil cylinder 15 connect respectively luffing bearing 14 and surpass principal arm, and both are hinged to have surpassed principal arm and luffing bearing 14, and under the effect of expansion oil cylinder 15, both can relatively launch or close up; On super lifting device, can also be provided with front stretching device and surpass back balance arm-tie.The link having surpassed on principal arm for left and right is generally symmetrically arranged.
In the present invention, surpass principal arm and at least there is one section of truss arm structure; Surpassed principal arm and can be truss arm structure, also can be as required will surpass principal arm and be designed to the combination of other structures such as truss arm structure and box, truss arm structure can adopt quadrangle truss structure, by tubing, is welded.
Compare with the principal arm that surpassed of box in prior art, the principal arm that surpassed in the present invention has truss arm structure, truss arm structure wind area is smaller, can greatly reduce to have surpassed the stressed of principal arm horizontal direction, greatly reduce the moment of flexure producing due to windage, reduce to have surpassed the distortion of principal arm, thereby promoted the wind load resistance ability of super lifting device, improved the lifting stability of hoisting crane.And, equal length surpassed principal arm, there is box in the weight ratio prior art that has surpassed principal arm of truss arm structure and surpassed the lightweight of principal arm.
Meanwhile, surpass left and right arms and adopted truss structure, also can improve removal efficiency so that the dismounting of hydraulic pressure electric elements has strengthened easy accessibility, reduced maintenance cost.
The application of super lifting device in a kind of specific embodiment under introducing in conjunction with Fig. 4 is simple, luffing bearing 14 is arranged on the head of a certain joint arm of telescopic crane boom 34 by having surpassed main shaft 19, both can hingedly also can be fixedly connected with, illustrated embodiment of the present invention is fixed connection structure, is connected in basic arm 32 heads; Having surpassed back balance device 16(and can be rope row's structure or pulling plate structure, be pulling plate structure in Fig. 2) one end Yu Chao lift winch mechanism 17 is connected, and the other end is connected with basic arm afterbody or turntable 31; Before having surpassed, pre-tightening mechanism 11 comprises front tensioning steel rope, pre-locking oil cylinder 112, zoom rate movable pulley 113 and deflection sheave, the pre-locking oil cylinder 112 of the present embodiment is positioned over and has surpassed in principal arm 13, the pretension steel rope 111 one end super lift winch of connection mechanisms 17 before having surpassed, the other end is walked around zoom rate pulley or is directly connected with pre-locking oil cylinder 112, zoom rate pulley is hinged with telescopic boom 34 minor details arm arm heads by two arm-ties 115, and the hoisting speed reducer of the folding and unfolding that wherein surpasses steel rope by super lift winch mechanism 17 rotates to be realized; Wherein launch hinge axle 1310 and luffing hinge axle 141 is arranged vertically mutually; Amplitude oil cylinder 12 one end are articulated with launches bearing 18, and one end is articulated with (identical with luffing bearing 14 hold-down arms) on a certain joint arm of telescopic boom 34, and illustrated embodiment of the present invention is connected on basic arm 32; Launch oil cylinder 15 one end and be articulated with expansion bearing 18, one end is articulated with and has surpassed principal arm 13, the expansion that has surpassed principal arm 13 by launching the retract action of oil cylinder 15, the withdrawal that has surpassed principal arm 13 by the extend action of amplitude oil cylinder 12.
In a kind of specific embodiment, surpass principal arm and comprised jib main body 132 and the arm tail 131 being connected with jib main body 132, the head end of jib main body 132 connects hoisting mechanism 17, arm tail 131 connects luffing bearing 14, jib main body 132 is truss arm structure, and it can consist of main chord 10a and web member 10b, and one end is welded four for articulating the jointing of winding support, this jointing can be hinged seat 1321,131 weld togethers of the other end and arm tail; Arm tail 131, for connecting luffing bearing 14 ends by the plate construction box-structure that is welded, can improve the easy accessibility of hydraulic pressure electric elements.
It should be noted that, be arm tail 131 by one end regulation that has surpassed principal arm connection telescopic boom 34 herein, and correspondingly, the one end that has surpassed principal arm connection hoisting mechanism 17 is arm head.
Above-mentioned jib main body 132 can detachablely be connected with hoisting mechanism 17, a kind of preferred embodiment in, truss arm structure and hoisting mechanism 17 are hinged, the connecting end surface corner location that is positioned at truss arm structure is provided with four hinged seats 1321, and the relevant position of hoisting mechanism 17 is provided with the hinged seat matching; This connection mode is fairly simple, and reliability is relatively good, and is convenient to dismounting and change.
Further, the arm tail 131 in above-described embodiment can be connected by welding manner with jib main body 132.
A kind of preferred embodiment in, pre-locking oil cylinder 112 can be placed in the inside of truss arm structure, can reduce the volume of super lifting device like this, and truss arm structure can be played a supporting role to pre-locking oil cylinder 112 to a certain extent, is conducive to improve service life and the working stability of pre-locking oil cylinder 112.
Further, in the jib main body 132 of super lifting device, be also provided with the storage member that has surpassed back balance device 16 134 after fixing gathering in, this storage member 134 can be designed as the form of articulating, as shown in Figure 2, storage member 134 is for being provided with the supporting vertical plate of holding tank, and storage member 134 also can be designed as other forms certainly.
In the various embodiments described above, arm tail 131 can be box-structure, it is hinged by aft mounted hinged seat and described luffing bearing 14, because arm tail 131 plays the effect that connects luffing bearing 14, therefore arm tail 131 is designed to box, can improve the comfort feature that both connect.
Particularly, articulated jib tail 131 and luffing bearing 14 can be distinguished in the two ends of the expansion oil cylinder 15 of above-mentioned super lifting device.
For Telescopic crane, when telescopic boom 34 length lengthen, the length of original super lifting device can not meet the needs of use, has provided a kind ofly keeping original space that surpassed to arrange constant in the situation that below, meets the super lifting device of hoisting operation demand.
Please refer to Fig. 5-Fig. 6, Fig. 5 is structural representation when super lifting device is in running order in the another kind of specific embodiment of the present invention; Fig. 6 is the structural representation of the lengthening truss arm of super lifting device in Fig. 5.
In the various embodiments described above, super lifting device can also be provided with and lengthen truss arm 133, lengthen truss arm 133 and be arranged between jib main body 132 and hoisting mechanism 17, can, according to the demand of using, increase the lengthening truss arm 133 of right quantity in jib main body 132 like this.In addition, lengthen truss arm 133 and jib main body 132 and can take travelling position apart, can avoid like this super lifting device transportation to surpass the problem of specified length, be convenient to transportation.
On the basis of above-mentioned super lifting device, the present invention also provides a kind of hoisting crane, comprises chassis, is arranged at the lifting basic arm on chassis and is connected in the super lifting device on lifting basic arm, and super lifting device is above-mentioned super lifting device.
Because hoisting crane has above-mentioned super lifting device, therefore hoisting crane also has the technique effect of above-mentioned super lifting device.
The otherwise data of hoisting crane please refer to prior art, and therefore not to repeat here.
Above a kind of hoisting crane provided by the present invention and super lifting device thereof are described in detail.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (10)
1. a super lifting device, comprise surpassed principal arm (13), be wound with the hoisting mechanism (17) of steel rope with for being connected the luffing bearing (14) of the crane arm of hoisting crane, described hoisting mechanism (17) and described luffing bearing (14) are connected to the described both ends that surpassed principal arm (13), it is characterized in that, the described principal arm (13) that surpassed at least has one section of truss arm structure.
2. super lifting device as claimed in claim 1, it is characterized in that, the described principal arm (13) that surpassed comprises jib main body (132) and the arm tail (131) being connected with described jib main body (132), the head end of described jib main body (132) connects described hoisting mechanism (17), described arm tail (131) connects described luffing bearing (14), and described jib main body (132) is truss arm structure.
3. super lifting device as claimed in claim 2, it is characterized in that, described truss arm structure and described hoisting mechanism (17) are hinged, the connecting end surface corner location that is positioned at described truss arm structure is provided with four hinged seats, and the relevant position of described hoisting mechanism (17) is provided with the hinged seat matching.
4. super lifting device as claimed in claim 3, is characterized in that, described arm tail (131) is connected with described jib main body (132) welding manner.
5. super lifting device as claimed in claim 2, is characterized in that, also comprises pre-locking oil cylinder (112), and described pre-locking oil cylinder (112) is placed in the inside of described truss arm structure.
6. super lifting device as claimed in claim 2, it is characterized in that, described super lifting device also comprises that one end is connected in and has surpassed back balance device in described super lift winch mechanism (17), is also provided with the described storage member (134) that has surpassed back balance device after fixing gathering in described jib main body (132).
7. super lifting device as claimed in claim 2, is characterized in that, described arm tail (131) is box-structure, and it is hinged by aft mounted hinged seat and described luffing bearing (14).
8. super lifting device as claimed in claim 8, is characterized in that, the two ends of the expansion oil cylinder of described super lifting device are hinged described arm tail (131) and described luffing bearing (14) respectively.
9. the super lifting device as described in claim 2 to 8 any one, is characterized in that, also comprises and lengthens truss arm (133), and described jib main body (132) is arranged at and is connected described hoisting mechanism (17) by described lengthening truss arm (133).
10. a hoisting crane, comprises chassis, is arranged at the lifting basic arm on described chassis and is connected in the super lifting device on described lifting basic arm, it is characterized in that, described super lifting device is the super lifting device described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695592.9A CN103641000A (en) | 2013-12-17 | 2013-12-17 | Crane and super-lifting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695592.9A CN103641000A (en) | 2013-12-17 | 2013-12-17 | Crane and super-lifting device thereof |
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| CN103641000A true CN103641000A (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310695592.9A Pending CN103641000A (en) | 2013-12-17 | 2013-12-17 | Crane and super-lifting device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN111115475A (en) * | 2019-12-26 | 2020-05-08 | 徐州重型机械有限公司 | Super-lifting device and crane |
| CN112079268A (en) * | 2020-08-25 | 2020-12-15 | 中联重科股份有限公司 | Super-lifting device of engineering machinery and engineering machinery |
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| CN103145054A (en) * | 2013-03-20 | 2013-06-12 | 中联重科股份有限公司 | Jib tail bracket as well as jib and hoisting equipment comprising same |
| 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 |
| CN203715125U (en) * | 2013-12-17 | 2014-07-16 | 徐州重型机械有限公司 | Crane as well as guying device thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102674172A (en) * | 2012-05-17 | 2012-09-19 | 中联重科股份有限公司 | Super lifting device and flare angle control device thereof, as well as crane containing super lifting device |
| CN202880720U (en) * | 2012-08-15 | 2013-04-17 | 中联重科股份有限公司 | Super-hoisting mast, super-hoisting device and hoisting equipment including super-hoisting device |
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| 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 |
| CN111115475A (en) * | 2019-12-26 | 2020-05-08 | 徐州重型机械有限公司 | Super-lifting device and crane |
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| CN112079268B (en) * | 2020-08-25 | 2021-10-01 | 中联重科股份有限公司 | Super-lifting device of engineering machinery and engineering machinery |
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Application publication date: 20140319 |