CN102515039A - Crane and super-lifting device thereof - Google Patents
Crane and super-lifting device thereof Download PDFInfo
- Publication number
- CN102515039A CN102515039A CN2011103705710A CN201110370571A CN102515039A CN 102515039 A CN102515039 A CN 102515039A CN 2011103705710 A CN2011103705710 A CN 2011103705710A CN 201110370571 A CN201110370571 A CN 201110370571A CN 102515039 A CN102515039 A CN 102515039A
- Authority
- CN
- China
- Prior art keywords
- bar portion
- oil cylinder
- lifting device
- crane
- mast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- B66C23/826—Bracing equipment acting at an inclined angle to vertical and horizontal directions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a crane and a super-lifting device thereof. The super-lifting device comprises a super-lifting mast, a front tensioning mechanism and a rear tensioning mechanism, wherein the super-lifting mast comprises a base, rod parts and only one power mechanism; the base is fixed on a lifting arm of the crane; one end of each rod part is hinged with the base; the power mechanism is fixed on the base, and is hinged with the rod parts; the front tensioning mechanism is connected between the super-lifting mast and the head of the lifting arm; and the rear tensioning mechanism is connected between the super-lifting mast and the tail of the lifting arm. Only one power mechanism is arranged in the super-lifting device, and can be used for driving the two rod parts to unfold simultaneously, so that the two mast rod parts can be unfolded at the same time, and unfolding angles of the two mast rod parts are consistent; therefore, steel wire ropes matched with the two mast rod parts are consistently stressed; and an effect of controlling sidewise bending is achieved.
Description
Technical field
The present invention relates to engineering machinery field, specifically, relate to a kind of crane super lifting device and use its hoisting crane.
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, comprising two masts and two oil cylinders being connected with mast in the existing super lifting device, the driving action through two oil cylinders makes said mast expansion.Because mast is controlled by two oil cylinders respectively, therefore can't guarantee that two masts launch simultaneously, the angle that can cause two masts to launch is inconsistent, makes that the steel rope that matches with two masts is stressed inconsistent, thus the effect of out of reach control side sway.
Summary of the invention
In order to overcome the above-mentioned defective and the deficiency of prior art; The object of the present invention is to provide a kind of super lifting device, comprise having surpassed mast, preceding tensioner mechanism, back tensioner mechanism, the said mast that surpassed comprises pedestal, bar portion, amplitude oil cylinder and actuating unit; Said pedestal is fixed on the crane arm of hoisting crane; One end and the said pedestal of said bar portion are hinged, and the two ends of said amplitude oil cylinder are articulated in respectively on said crane arm and the said pedestal, and the quantity of said actuating unit is merely one; Said actuating unit is fixed on the said pedestal; And be hinged with said bar portion, said before tensioner mechanism be connected between the said head that surpass mast and said crane arm, said tensioner mechanism afterwards is connected between the said afterbody that has surpassed mast and said crane arm.
Further, said actuating unit comprises a telescopic oil cylinder and two connecting rods, and said telescopic oil cylinder is fixed on the said pedestal, and an end of said each connecting rod is hinged in the said bar portion, and the other end is articulated on the said telescopic oil cylinder.
Further, said actuating unit comprises the bi-directional expansion oil cylinder, and said bi-directional expansion oil cylinder is fixed on the said pedestal, and two telescopic booms of this bi-directional expansion oil cylinder are articulated in said bar portion and in said bar portion, slide.
Further, be respectively equipped with guide rail in the said bar portion, each telescopic boom is connected with said guide rail, and slides and match rotationally.
Further; Said bar portion is provided with drum mechanism built, first turning member and second turning member; Tensioner mechanism comprises first linear unit, second linear unit and the 3rd turning member before said, and said first linear unit connects the head with said crane arm, and an end of said second linear unit is connected with said drum mechanism built; And after passing through said first turning member, the 3rd turning member and second turning member successively, the other end of said second linear unit is fixed in the said bar portion.
Further, said drum mechanism built is arranged in the said bar portion, and is positioned at the position of the contiguous bottom of said bar portion.
Further, said bar portion is provided with the pretension oil cylinder, and the other end of said second linear unit is fixed in the said bar portion through being connected with said pretension oil cylinder.
Further, said back tensioner mechanism one end is arranged in the said bar portion, the afterbody of other end setting and said crane arm or be arranged on the turntable of hoisting crane.
The present invention also provides a kind of hoisting crane of using above-mentioned super lifting device.
Compared with prior art; Only be provided with an actuating unit in the super lifting device of the present invention; This actuating unit can drive two bar portions simultaneously and launch, and launches when therefore can guarantee two masts, and the angle that two masts are launched is consistent; Thereby make that the steel rope that matches with two masts is stressed consistent, thereby reach the effect of controlling side sway.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, 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 embodiment of the invention.
Fig. 2 is the structural representation that has surpassed mast of the present invention's first preferred embodiment.
Fig. 3 is the structural representation that has surpassed mast of the present invention's second preferred embodiment.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, 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 present invention's protection.
Shown in Figure 1 is the structural representation of the super lifting device of one embodiment of the invention.Super lifting device of the present invention 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, super lifting device of the present invention is used for full ground hoisting crane, the requirement thereby adaptation large-tonnage hoisting operation demand and different ground-surface go.
Please combine to consult Fig. 1 and Fig. 2, super lifting device of the present invention is fixed on the crane arm 9 of hoisting crane, to improve the strained condition of crane arm 9, improves the hoisting capacity and the load-carrying capacity of hoisting crane.This super lifting device comprises and has surpassed mast 1, preceding tensioner mechanism 3 and back tensioner mechanism 5.
This of the present invention's first preferred embodiment surpass mast 1 and comprise pedestal 11, bar portion 12, actuating unit and amplitude oil cylinder 15.This pedestal 11 is fixed on the middle part of this crane arm 9.The quantity of said bar portion 12 is preferably two, and said bar portion 12 is hinged on the two ends of this pedestal 11 respectively.Each bar portion 12 is provided with drum mechanism built 120, first turning member 121 and second turning member 122.This drum mechanism built 120 is arranged at the position of these bar portion 12 contiguous bottoms.Drum mechanism built 120 of the present invention can be arranged in the said bar portion 12, also can be arranged at other mechanics of hoisting crane, and the present invention is not limited to this.Preferably, this drum mechanism built 120 is arranged in this bar portion 12.This drum mechanism built 120 can adopt multiple rotary execution unit to drive, and the present invention is not limited to this.After adopting technique scheme; The present invention has adjusted this and has surpassed mast 1 whole center of gravity, and in the course of the work, it is little that this that erects surpass mast 1 amount of deflection; In the improved while of strained condition that guarantees crane arm 9, the whole strained condition of super lifting device also is improved.This first turning member 121 and second turning member 122 are arranged at the end of this bar portion 12 away from this pedestal 11.
Said actuating unit comprises telescopic oil cylinder 13 and connecting rod 14.The quantity of this telescopic oil cylinder 13 is merely one, and the one of which end is fixed on this pedestal 11.The quantity of said connecting rod 14 is preferably two, and an end of each connecting rod 14 is hinged in this bar portion 12, and the other end is articulated in the end of this telescopic oil cylinder 13 away from this pedestal 11.This telescopic oil cylinder 13 can drive the said relatively bar of said connecting rod 14 portion 12 and rotate, thereby said bar portion 12 is rotated and launches to form and fall " eight " font.The quantity of this amplitude oil cylinder 15 is merely one, and the one of which end is articulated on this pedestal 11, and the other end is articulated on this crane arm 9.The flexible adjustment that can realize bar portion 12 pitch angle of this amplitude oil cylinder 15.
Should before the quantity of tensioner mechanism 3 be two covers, it is used for cooresponding bar portion 12 is strained.Tensioner mechanism 3 comprises first linear unit 31, second linear unit 32 and the 3rd turning member 33 before each.This first linear unit 31 and second linear unit 32 can be the linear load parts of various material such as steel rope or iron chains, and the present invention is not limited to this.The 3rd turning member 33 is preferably movable pulley.The two ends of this first linear unit 31 are connected with the head and the 3rd turning member 33 of this crane arm 9 respectively.One end of this second linear unit 32 is connected with this drum mechanism built 120, and after passing through this first turning member 121, the 3rd turning member 33 and second turning member 122 successively, the other end of this second linear unit 32 is fixed in the bar portion 12.Preferably, the other end of this second linear unit 32 can be fixed on the pretension oil cylinder (figure does not show) in the bar portion 12.Under different actual conditions, can adjust the pulling force of this second linear unit 32 and this first linear unit 31 through the fore and aft motion of this pretension oil cylinder as required.
The quantity of this back tensioner mechanism 5 is two covers, and the one of which end is arranged in the cooresponding bar portion 12, and the other end is arranged on the afterbody of crane arm 9 or is arranged on the mechanical parts such as turntable of hoisting crane.This back tensioner mechanism 5 can comprise rope row and telescopic oil cylinder or tighten up structure such as winch that the present invention is not limited to this.Preceding tensioner mechanism applies pulling force to the head of crane arm 9, and 5 pairs of back tensioners mechanism have surpassed mast 1 and applied pulling force, thereby realizes having surpassed mast 1 single-piece balance.
See also Fig. 3, this of the present invention's second preferred embodiment surpass mast and comprise pedestal 61, bar portion 62, telescopic oil cylinder bearing 63, actuating unit and amplitude oil cylinder 65.This pedestal 61 is fixed on the middle part of this crane arm 9.The structure of the structure of said bar portion 62 and the bar portion 12 of first preferred embodiment and act on roughly the samely, difference is that each bar portion 62 is provided with guide rail 621, said guide rail 621 is used for and this bi-directional expansion oil cylinder slides and normal-running fit.This telescopic oil cylinder bearing 63 is fixed on this pedestal 61.This actuating unit is the bi-directional expansion oil cylinder; It can drive said bar portion 62 and launch; This bi-directional expansion oil cylinder comprises cylinder body 641 and two telescopic booms 642; This cylinder body 641 is fixed on this telescopic oil cylinder bearing 63, and said telescopic boom 642 is arranged at the two ends of this cylinder body 641, and each telescopic boom 642 is connected with cooresponding guide rail 621 away from an end of this cylinder body 641 and slides and match rotationally.Said telescopic boom 642 is in flexible process, and said bar portion 62 said relatively telescopic booms 642 slide and rotate.The quantity of this amplitude oil cylinder 65 is merely one, and the one of which end is hinged on this pedestal 61, and the other end is articulated on this crane arm 9.Each bar portion 62 is provided with drum mechanism built 620, first turning member 621 and second turning member 622.
The present invention's second preferred embodiment should surpass mast with should before tensioner mechanism 3 and back tensioner mechanism 5 annexation and first preferred embodiment should surpass mast 1 and be somebody's turn to do preceding tensioner mechanism 3 and after the annexation of tensioner mechanism 5 identical, so do not give unnecessary details.
Be appreciated that this telescopic oil cylinder bearing 63 can be regarded as the part of this pedestal 11, therefore, this bi-directional expansion oil cylinder can be thought to be fixed on this pedestal 11.
Except aforementioned crane super lifting device, the present invention also provides a kind of hoisting crane that comprises said 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, hoisting crane of the present invention and super lifting device thereof compared with prior art have the following advantages:
Only be provided with an actuating unit in the super lifting device of the present invention; This actuating unit can drive two bar portions simultaneously and launch; Launch when therefore can guarantee two masts; The angle that two masts are launched is consistent, thereby makes that the steel rope that matches with two masts is stressed consistent, reaches the effect of controlling side sway.This super lifting device is because have only an actuating unit, and is therefore simple in structure, weight is lighter.
In addition, the present invention is arranged on drum mechanism built and has surpassed on the mast, and is positioned at the position that has surpassed the contiguous bottom of mast, has adjusted to have surpassed the whole center of gravity of mast.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.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. crane super lifting device; It is characterized in that: comprise having surpassed mast (1), preceding tensioner mechanism (3), back tensioner mechanism (5); The said mast (1) that surpassed comprises pedestal (11), bar portion (12), amplitude oil cylinder (15) and actuating unit, and said pedestal (11) is fixed on the crane arm (9) of hoisting crane, and an end of said bar portion (12) and said pedestal (11) are hinged; The two ends of said amplitude oil cylinder (15) are articulated in respectively on said crane arm (9) and the said pedestal (11); The quantity of said actuating unit is merely one, and said actuating unit is fixed on the said pedestal (11), and is hinged with said bar portion (12); Tensioner mechanism (3) is connected between the said head that surpass mast (1) and said crane arm (9) before said, and said tensioner mechanism (5) afterwards is connected between the said afterbody that has surpassed mast (1) and said crane arm (9).
2. super lifting device according to claim 1; It is characterized in that; Said actuating unit comprises a telescopic oil cylinder (13) and two connecting rods (14); Said telescopic oil cylinder (13) is fixed on the said pedestal (11), and an end of said each connecting rod (14) is hinged in the said bar portion (12), and the other end is articulated on the said telescopic oil cylinder (13).
3. super lifting device according to claim 1; It is characterized in that; Said actuating unit comprises the bi-directional expansion oil cylinder, and said bi-directional expansion oil cylinder is fixed on the said pedestal (11), and two telescopic booms (642) of this bi-directional expansion oil cylinder are articulated in said bar portion and in said bar portion, slide.
4. super lifting device according to claim 3 is characterized in that, is respectively equipped with guide rail in the said bar portion, and each telescopic boom is connected with said guide rail, and slides and match rotationally.
5. according to each described super lifting device among the claim 1-4; It is characterized in that; Said bar portion (12) is provided with drum mechanism built (120), first turning member (121) and second turning member (122); Tensioner mechanism (3) comprises first linear unit (31), second linear unit (32) and the 3rd turning member (33) before said; Said first linear unit (31) connects the head with said crane arm (9); One end of said second linear unit (32) is connected with said drum mechanism built (120), and after passing through said first turning member (121), the 3rd turning member (33) and second turning member (122) successively, the other end of said second linear unit (32) is fixed in the said bar portion (12).
6. super lifting device according to claim 5 is characterized in that, said drum mechanism built (120) is arranged in the said bar portion (12), and is positioned at the position of the contiguous bottom of said bar portion (12).
7. super lifting device according to claim 6 is characterized in that, said bar portion (12) is provided with the pretension oil cylinder, and the other end of said second linear unit (32) is fixed in the said bar portion (12) through being connected with said pretension oil cylinder.
8. according to each described super lifting device in the claim 7, it is characterized in that said back tensioner mechanism (5) one ends are arranged in the said bar portion (12), the afterbody of other end setting and said crane arm (9) or be arranged on the turntable of hoisting crane.
9. a hoisting crane is characterized in that, said hoisting crane comprises like each described super lifting device among the claim 1-8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110370571.0A CN102515039B (en) | 2011-11-21 | 2011-11-21 | Crane and super-lifting device thereof |
| PCT/CN2012/074244 WO2013075454A1 (en) | 2011-11-21 | 2012-04-18 | Crane and lifting extension apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110370571.0A CN102515039B (en) | 2011-11-21 | 2011-11-21 | Crane and super-lifting device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102515039A true CN102515039A (en) | 2012-06-27 |
| CN102515039B CN102515039B (en) | 2014-01-15 |
Family
ID=46286195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110370571.0A Expired - Fee Related CN102515039B (en) | 2011-11-21 | 2011-11-21 | Crane and super-lifting device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102515039B (en) |
| WO (1) | WO2013075454A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102795560A (en) * | 2012-08-24 | 2012-11-28 | 中联重科股份有限公司 | Engineering machine and its main arm, and method for detecting and correcting side bend of the main arm |
| CN102889269A (en) * | 2012-09-27 | 2013-01-23 | 三一重工股份有限公司 | Pressure detection system for preloaded oil cylinders, super lift device and crane |
| WO2015027842A1 (en) * | 2013-08-29 | 2015-03-05 | 三一汽车起重机械有限公司 | Front tension apparatus for superlift apparatus, superlift apparatus, and engineering machine |
| CN105084226A (en) * | 2014-05-22 | 2015-11-25 | 中联重科股份有限公司 | Front tensioning mechanism, superlift device with front tensioning mechanism and crane |
| CN107473107A (en) * | 2017-10-01 | 2017-12-15 | 北京鼎翰科技有限公司 | A kind of super lifting device of engineering machinery |
| CN108263975A (en) * | 2017-01-02 | 2018-07-10 | 利勃海尔工厂埃英根有限公司 | For the expansion equipment of crane arm |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999036343A1 (en) * | 1998-01-16 | 1999-07-22 | Mannesmann Ag | Device for bracing a superlift device of a telescopic crane |
| DE20002179U1 (en) * | 2000-02-08 | 2000-08-03 | Liebherr Werk Ehingen | Mobile crane |
| US20020070187A1 (en) * | 2000-12-12 | 2002-06-13 | Liebherr-Werk Ehingen Gmbh | Automotive crane |
| EP1266861B1 (en) * | 2001-06-13 | 2003-12-10 | Terex-Demag GmbH & Co. KG | Telescopic crane with a superlift device |
| US7172082B2 (en) * | 2001-06-11 | 2007-02-06 | Terex-Demag Gmbh & Co. Kg | Mobile crane with a telescopic main boom |
| DE10022658B4 (en) * | 1999-06-28 | 2007-10-04 | Terex-Demag Gmbh & Co. Kg | telescopic crane |
| CN101723260A (en) * | 2008-10-29 | 2010-06-09 | 徐州重型机械有限公司 | Superlift device for telescopic boom and telescopic boom type crane |
| CN101857176A (en) * | 2010-07-05 | 2010-10-13 | 三一汽车起重机械有限公司 | Super hoisting device and telescopic-boom hoisting equipment with same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5006622B2 (en) * | 2006-11-13 | 2012-08-22 | 株式会社タダノ | Crane device with telescopic boom |
| CN101618840B (en) * | 2008-06-30 | 2010-12-22 | 徐州重型机械有限公司 | Telescopic crane and superlift device thereof |
| CN101659378A (en) * | 2009-08-27 | 2010-03-03 | 三一汽车制造有限公司 | Lift and superlift device thereof |
| JP5502446B2 (en) * | 2009-12-11 | 2014-05-28 | 株式会社タダノ | Boom working machine |
-
2011
- 2011-11-21 CN CN201110370571.0A patent/CN102515039B/en not_active Expired - Fee Related
-
2012
- 2012-04-18 WO PCT/CN2012/074244 patent/WO2013075454A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999036343A1 (en) * | 1998-01-16 | 1999-07-22 | Mannesmann Ag | Device for bracing a superlift device of a telescopic crane |
| DE10022658B4 (en) * | 1999-06-28 | 2007-10-04 | Terex-Demag Gmbh & Co. Kg | telescopic crane |
| DE20002179U1 (en) * | 2000-02-08 | 2000-08-03 | Liebherr Werk Ehingen | Mobile crane |
| US20020070187A1 (en) * | 2000-12-12 | 2002-06-13 | Liebherr-Werk Ehingen Gmbh | Automotive crane |
| US7172082B2 (en) * | 2001-06-11 | 2007-02-06 | Terex-Demag Gmbh & Co. Kg | Mobile crane with a telescopic main boom |
| EP1266861B1 (en) * | 2001-06-13 | 2003-12-10 | Terex-Demag GmbH & Co. KG | Telescopic crane with a superlift device |
| CN101723260A (en) * | 2008-10-29 | 2010-06-09 | 徐州重型机械有限公司 | Superlift device for telescopic boom and telescopic boom type crane |
| CN101857176A (en) * | 2010-07-05 | 2010-10-13 | 三一汽车起重机械有限公司 | Super hoisting device and telescopic-boom hoisting equipment with same |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102795560A (en) * | 2012-08-24 | 2012-11-28 | 中联重科股份有限公司 | Engineering machine and its main arm, and method for detecting and correcting side bend of the main arm |
| CN102795560B (en) * | 2012-08-24 | 2014-09-17 | 中联重科股份有限公司 | Engineering machine and its main arm, and method for detecting and correcting side bend of the main arm |
| CN102889269A (en) * | 2012-09-27 | 2013-01-23 | 三一重工股份有限公司 | Pressure detection system for preloaded oil cylinders, super lift device and crane |
| CN102889269B (en) * | 2012-09-27 | 2015-10-28 | 三一重工股份有限公司 | Pretension oil cylinder working-pressure detection system, super lifting device and hoist |
| WO2015027842A1 (en) * | 2013-08-29 | 2015-03-05 | 三一汽车起重机械有限公司 | Front tension apparatus for superlift apparatus, superlift apparatus, and engineering machine |
| CN105084226A (en) * | 2014-05-22 | 2015-11-25 | 中联重科股份有限公司 | Front tensioning mechanism, superlift device with front tensioning mechanism and crane |
| CN108263975A (en) * | 2017-01-02 | 2018-07-10 | 利勃海尔工厂埃英根有限公司 | For the expansion equipment of crane arm |
| CN108263975B (en) * | 2017-01-02 | 2022-06-07 | 利勃海尔工厂埃英根有限公司 | Deployment device for crane boom |
| CN107473107A (en) * | 2017-10-01 | 2017-12-15 | 北京鼎翰科技有限公司 | A kind of super lifting device of engineering machinery |
| CN107473107B (en) * | 2017-10-01 | 2018-09-18 | 德州职业技术学院 | A kind of super lifting device of engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013075454A1 (en) | 2013-05-30 |
| CN102515039B (en) | 2014-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102515039B (en) | Crane and super-lifting device thereof | |
| US9132999B2 (en) | Method of connecting crane suspension assembly sections together and frame mounted assembly used therefore | |
| CN110255402B (en) | Hoisting crane with improved movable counterweight | |
| CN101254888B (en) | Mobile lift crane with variable position counterweight and operation method thereof | |
| US8127949B2 (en) | Crane backstay spreader | |
| US8839966B2 (en) | Folding jib main strut and transportable reeved strut caps | |
| US8397924B2 (en) | Drum frame system for cranes | |
| CN101554978B (en) | Arm support lifting mechanism | |
| CN104355056B (en) | A kind of gantry frame type conveyer | |
| CN107215791B (en) | Double-cantilever rotary base crane and ship comprising same | |
| CN201442833U (en) | Arm support lifting mechanism | |
| CN202296915U (en) | Crane, super-lifting device and pre-tightening mechanism of super-lifting device | |
| CN101955133B (en) | Movable crane | |
| EP3002246B1 (en) | System for reducing the counterweight of a crane | |
| CN102001590A (en) | Wheeled crane and luffing jib thereof | |
| CN101460386B (en) | Mobile lift crane with lift enhancing attachment | |
| CN201340686Y (en) | Adjustable crane arm frame system model | |
| RU2290362C1 (en) | Tower boom crane | |
| CN103171977A (en) | Large-scale hoisting equipment with A-frame folding inversed function | |
| CN202022677U (en) | Wheeled crane and variable amplitude assistant arm thereof | |
| CN208516793U (en) | Eight rope trolleies | |
| CN104071703A (en) | Portable universal crane | |
| JP7447613B2 (en) | working machine | |
| CN202594671U (en) | Crane with connecting rod telescopic lifting arm | |
| CN104016244B (en) | A kind of side hoisting crane realizing freight container vertical lifting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20140115 Termination date: 20191121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |