CN103466468A - Superlift device, engineering machine and front tension device of superlift device - Google Patents
Superlift device, engineering machine and front tension device of superlift device Download PDFInfo
- Publication number
- CN103466468A CN103466468A CN2013103841019A CN201310384101A CN103466468A CN 103466468 A CN103466468 A CN 103466468A CN 2013103841019 A CN2013103841019 A CN 2013103841019A CN 201310384101 A CN201310384101 A CN 201310384101A CN 103466468 A CN103466468 A CN 103466468A
- Authority
- CN
- China
- Prior art keywords
- arm
- take
- mast
- steel rope
- rope
- Prior art date
Links
- 239000002965 ropes Substances 0.000 claims abstract description 89
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 238000004804 winding Methods 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 238000010276 construction Methods 0.000 claims description 8
- 238000000034 methods Methods 0.000 abstract description 9
- 239000003638 reducing agents Substances 0.000 abstract description 4
- 239000003921 oils Substances 0.000 description 6
- 238000005516 engineering processes Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000001052 transient Effects 0.000 description 1
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
- B66C23/823—Bracing equipment acting in vertical direction
Abstract
Description
Technical field
The present invention relates to the elevator machinery field, more specifically, relate to a kind of front take-up device, super lifting device and construction machinery and equipment of super lifting device.
Background technology
Along with the fast development of China's economic construction, construction requirement is more and more higher, and various hoister in large tonnage are increasing.The hoisting capacity of hoister in large tonnage is large, but the crane arm cross section is subject to width restriction, makes the slenderness ratio of hoisting crane increase, and then rigidity variation while causing lift heavy, side bending deformation is large, crane arm self structure stability is very poor, lifting performance is poor.In prior art, hoister in large tonnage improves the distortion of crane arm by the configuration super lifting device, to strengthen the lifting performance of crane arm.
Please refer to Fig. 1, Fig. 1 is a kind of structural representation that is installed on the typical super lifting device of telescopic crane boom.
As can be seen from Figure, telescopic crane boom comprises basic arm 10 ' and is set in the inner multi-stage telescopic arms of basic arm 10 '.Super lifting device comprises mast 2 ', mast 2 ' is for having the cylinder of enough Rigidity and strengths, and the basic arm 10 ' of one end and telescopic crane boom is hinged, the arm head place of the common corresponding basic arm 10 ' of hinge, mast 2 ' can turn at basic arm 10 ' luffing plane internal rotation around hinge.Be provided with front take-up device between the arm head of the second end of mast 2 ' and multi-stage telescopic arms any one the joint arm 11 ' except basic arm 10 ', be provided with rear take-up device between the second end of mast 2 ' and the arm tail of basic arm 10 ', front take-up device normally stay cord 32 ' adds elevator, and rear take-up device is the row of rope or arm-tie normally.Super lifting device also comprises the amplitude oil cylinder 21 ' of being located between mast 2 ' and basic arm 10 ', and the two ends of amplitude oil cylinder 21 ' are hinged with mast 2 and basic arm 10 ' respectively, with promote mast 2 ' with respect to basic arm 10 ' at above-mentioned luffing rotation with in surface.
The front take-up device of super lifting device comprises the super lift winch device 6 ' that is arranged on mast the 2 ' second end, pulley 4 ' and the steel rope 31 ' that is arranged on joint arm 11 ' arm head, super lift winch device wherein comprises winding drum and the CD-ROM drive motor that drives winding drum to rotate, steel rope 31 ' one end is wrapped on winding drum, and other end winding is connected with mast after crossing pulley 4 '.During the work of this super lifting device, the steel rope by front take-up device tensioning acts on the pulling force on telescopic boom, can improve the strained condition of crane arm, reduces the deflection of crane arm, and then significantly promotes its lifting performance.During this super lifting device work, super lift winch is by steel rope 31 ' tensioning certain value, to guarantee that it reaches the work necessary requirement, after steel rope 31 ' tensioning, crane arm hangs while being loaded with article, the pulling force of steel rope 31 ' increases severely and also easily overcomes the traction resistance of CD-ROM drive motor, cause super lift winch to continue to put rope, steel rope 31 ' is lax, make the front take-up device of super lifting device effectively to crane arm, not apply the distortion that pulling force suppresses crane arm, and finally cause the lifting performance of crane arm sharply to descend, when serious, even have an accident.
Therefore, how improving the serviceability of front take-up device when crane arm hangs the loading product is the technical matters that those skilled in the art need solution badly.
Summary of the invention
Based on above-mentioned technical barrier, one object of the present invention is to provide a kind of front take-up device that moves the failure-free super lifting device when crane arm hangs the loading product.Another object of the present invention is to provide a kind of super lifting device and construction machinery and equipment.
The front take-up device of super lifting device provided by the invention comprises: is arranged on the super lift winch device on mast, is arranged on the pulley on crane arm one joint arm, and steel rope; Super lift winch device comprises: CD-ROM drive motor; The reductor be connected by transmission shaft with CD-ROM drive motor; With the coaxial winding drum be connected of speed reducer output shaft; The first end winding of steel rope is on winding drum, and the second end winding is connected with mast after crossing pulley; Drg is installed on transmission shaft.
Further, between drg and transmission shaft, free-wheel clutch is installed, free-wheel clutch is put the rope rotation for limiting transmission shaft.
Further, this front take-up device also comprises stretching force detecting apparatus and controller; Stretching force detecting apparatus for after crane arm completes expanding-contracting action, hang the pulling force that detects steel rope before the loading product, when the pulling force that steel rope detected is less than the first preset value, send the rope closing signal to controller, controller rotates according to rope closing signal control CD-ROM drive motor generation rope closing; When the pulling force that steel rope detected is not less than the first preset value, send danger signal to controller, controller is controlled CD-ROM drive motor according to danger signal and is stopped operating.
Further, stretching force detecting apparatus is the pulling force sensor be mounted on steel rope; Perhaps, stretching force detecting apparatus is tensioning hydro-cylinder, and cylinder barrel end and the mast of tensioning hydro-cylinder are hinged, and rod end is connected with the second end of steel rope.
Further, the output shaft of transmission shaft and CD-ROM drive motor is the integral type structure; Perhaps, the input shaft of transmission shaft and reductor is the integral type structure.
Further, drg is normally closed brake.
Further, the first end of mast is hinged on the arm head of the basic arm of crane arm, and super lift winch device is arranged on the second end of mast.
Further, pulley is arranged on the arm head of minor details arm of crane arm.
Super lifting device provided by the invention comprises above-mentioned front take-up device, also comprises the rear take-up device between the arm tail that is arranged on mast and crane arm basic arm.
Construction machinery and equipment provided by the invention comprises: chassis, be arranged on the turntable on chassis, and the crane arm hinged with turntable, be provided with above-mentioned super lifting device on crane arm.
The front take-up device of super lifting device provided by the invention, by the extra drg of installing on the transmission shaft between CD-ROM drive motor and reductor, this drg can hang while being loaded with article transmission shaft is applied to braking force at crane arm, with together with the traction resistance of CD-ROM drive motor, stop winding drum to put rope to rotate, thereby guarantee that steel rope hangs the tensioning of the process of carrying, and then guaranteed the serviceability of front take-up device, be conducive to improve the lifting performance of crane arm.Also with regard to the hoisting crane that has overcome prior art, hang in the process of carrying, the pressure (traction resistance) provided over CD-ROM drive motor self because of the suffered pulling force sharp increase of steel rope causes winding drum to put the rope rotation, steel rope can not tensioning, the problem that the lifting performance of crane arm sharply descends.
The accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:
Fig. 1 has schematically shown the structure of the super lifting device of prior art;
Fig. 2 has schematically shown the sectional structure radially of winding drum and reductor in the front take-up device of the super lifting device that the embodiment of the present invention provides;
Fig. 3 has schematically shown the axial sectional structure of super lift winch device in the front take-up device of the super lifting device that the embodiment of the present invention provides.
The specific embodiment
It should be noted that, in the situation that do not conflict, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
The super lifting device that the embodiment of the present invention provides comprises mast, mast amplitude oil cylinder, front take-up device and rear take-up device etc.The first end of its middle mast is hinged on the arm head of the basic arm of crane arm, the two ends of mast amplitude oil cylinder are hinged with basic arm and mast respectively, front take-up device is arranged between a joint arm arm head of the second end of mast and crane arm, and rear take-up device is arranged between the arm tail of the second end of mast and basic arm.Rear take-up device can adopt known rope row or pulling plate structure.
Wherein, the front take-up device of super lifting device (take-up device before hereinafter referred) comprising: super lift winch device, pulley, steel rope.
In conjunction with referring to figs. 2 and 3, super lift winch device is arranged on the second end of mast, it comprise CD-ROM drive motor 63, the reductor 62 be connected by transmission shaft 60 with CD-ROM drive motor 63, with the coaxial winding drum be connected 61 of speed reducer output shaft.It should be noted that, this transmission shaft 60 can be the integral type structure with the output shaft of CD-ROM drive motor 63, with the input shaft of reductor 62, be perhaps the integral type structure, certainly, transmission shaft 60 can be also an independent axle part, and for the transmission of power by CD-ROM drive motor 63, the withdrawing rope to reductor 62 and then driving winding drum 61 rotates transmission shaft 60.In Fig. 3, can find out, drg 64 is installed on transmission shaft 60, between drg 64 and transmission shaft 60, free-wheel clutch 65 is installed, is equivalent to free-wheel clutch 65 is built in drg 64, free-wheel clutch 65 is put the rope rotation for limiting transmission shaft 60.
The arrangement of pulley and steel rope all can adopt prior art.Particularly, pulley for example is arranged on, on a joint joint arm (the joint arm of non-basic arm, the arm head of minor details arm) of crane arm.The first end winding of steel rope is on winding drum 61, and the second end winding is connected with mast after crossing pulley.
The working process of the front take-up device that the present embodiment provides is as described below:
1) before the crane arm of weight-lifting equipment is implemented expanding-contracting action, drg 64 and free-wheel clutch 65 be locking transmission shaft 60 not, crane arm telescopic boom then, and super lift winch device is with the flexible withdrawing rope of crane arm.
When 2) expanding-contracting action of crane arm stops, the steel rope of front take-up device is because of the sagging distortion of conducting oneself with dignity, steel rope is subject to larger pulling force, now control the built-in free-wheel clutch of drg 64 65 and pin transmission shaft 60, under the one-way brake effect of free-wheel clutch 65, (rope closing of super lift winch is rotated and is not limited, putting rope rotate be limited), the steel rope of front take-up device can not drive winding drum 61 and do and putting rope and rotate.Now steel rope can not drive winding drum 61 generation rope closings rotations under Action of Gravity Field yet, thereby winding drum 61 does not rotate other actions that can not affect car load.
3) after the expanding-contracting action of crane arm completes, reason due to the deadweight of the amount of deflection of crane arm self and front take-up device steel rope, steel rope is in relaxed state, therefore after the expanding-contracting action of crane arm completes, hang the loading product before, winding drum 61 reverses with the tensioning steel rope under the drive of CD-ROM drive motor 63.Now the built-in free-wheel clutch 65 of drg 64 still pins transmission shaft 60, makes 61 of winding drums that rope closing can occur and rotates, and can not put rope and rotate, and the operation of tensioning steel rope is carried out smoothly.
4) hang in loading product process, although the pulling force that steel rope is increased severely, but the built-in free-wheel clutch 65 of drg 64 still pins transmission shaft 60, and with together with the traction resistance of CD-ROM drive motor 63, stop winding drum 61 to put rope to rotate, thereby guarantee that steel rope hangs the tensioning of the process of carrying, and then guaranteed the serviceability of front take-up device, and make the lifting performance of crane arm be improved.Also with regard to the hoisting crane that has overcome prior art, hang in the process of carrying, because the suffered pulling force of the steel rope winding drum that surpasses pressure (traction resistance) that CD-ROM drive motor self provides or cause because of reasons such as CD-ROM drive motor leakages that increases severely is put the rope rotation, the problem that steel rope can not tensioning.
5) hang after having carried while not needing the tensioning steel rope, the one-way locking of can the brake off device built-in 65 pairs of transmission shafts 60 of free-wheel clutch, super lift winch device can the freedom retractable rope.
Preferably, this front take-up device also comprises stretching force detecting apparatus and controller.Wherein, stretching force detecting apparatus for after crane arm completes expanding-contracting action, hang the pulling force that detects steel rope before the loading product.By above learning, because of crane arm after completing expanding-contracting action, hang the loading product before steel rope usually in more lax state, therefore need be by steel wire tensioning.When the pulling force that steel rope detected when stretching force detecting apparatus is less than the first preset value (when this value can be hung the loading product for steel rope required minimum tensioning pulling force), send the rope closing signal to controller, rope closings occur according to rope closing signal control CD-ROM drive motor 63 and rotate in controller, winding drum under the drive of CD-ROM drive motor 63 lay winding wire ropes by steel wire tensioning.When the pulling force that steel rope detected when stretching force detecting apparatus is not less than the first preset value, tensioning of steel rope is described, now to controller, send danger signal, controller is controlled CD-ROM drive motor 63 according to danger signal and is stopped operating, and crane arm can be connected with loading product to be hung.Preferably, stretching force detecting apparatus is the pulling force sensor be mounted on steel rope, perhaps stretching force detecting apparatus is implemented by tensioning hydro-cylinder 5, particularly, cylinder barrel end and the mast of tensioning hydro-cylinder 5 are hinged, and rod end is connected with the second end of steel rope, and tensioning hydro-cylinder 5 can adopt known technology, tensioning hydro-cylinder 5 can be extrapolated the pulling force of steel rope by detecting oil cylinder working-pressure, also can be used for the tensioning steel rope simultaneously.
It should be noted that, the front take-up device that the embodiment of the present invention provides, by at the interior free-wheel clutch 65 that arranges of drg 4, cause in the time of can also avoiding the telescopic oil cylinder of crane arm in a certain quiescence after flexible, arm body inside to be moved that steel rope is stressed uprushes, cause winding drum and continue to put rope, cause the problem of large arm shake.
It should be noted that, although in the present embodiment, by the mode at the built-in free-wheel clutch 5 of drg 64, the accident that coordinates CD-ROM drive motor to avoid crane arm to hang super lift winch device in the process of carrying is put rope, but in a kind of unshowned mode, only by the mode that drg 64 is set on transmission shaft 60, also can reach the above-mentioned purpose that super lift winch device accident is put rope that prevents, this drg 64 can hang while carrying transmission shaft 60 is applied to braking force at crane arm, with together with the traction resistance of CD-ROM drive motor 63, stop winding drum 61 to put rope to rotate, thereby guarantee that steel rope hangs the tensioning of the process of carrying, and then guaranteed the serviceability of front take-up device.While needing more lax steel wire tensioning after the crane arm telescopic boom has moved, before hanging the loading product, only need the locking of 64 pairs of transmission shafts 60 of temporary transient brake off device, making CD-ROM drive motor 63 can drive winding drum 61 does rope closing and rotates and to get final product, once again pin again transmission shaft 60 after steel wire tensioning, then article hung and carry.Preferably, drg 64 can be selected normally closed brake.
Construction machinery and equipment provided by the invention comprises: chassis, be arranged on the turntable on chassis, and the crane arm hinged with turntable, be provided with above-mentioned super lifting device on crane arm.
These are only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103841019A CN103466468A (en) | 2013-08-29 | 2013-08-29 | Superlift device, engineering machine and front tension device of superlift device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103841019A CN103466468A (en) | 2013-08-29 | 2013-08-29 | Superlift device, engineering machine and front tension device of superlift device |
| PCT/CN2014/084766 WO2015027842A1 (en) | 2013-08-29 | 2014-08-20 | Front tension apparatus for superlift apparatus, superlift apparatus, and engineering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103466468A true CN103466468A (en) | 2013-12-25 |
Family
ID=49791560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103841019A CN103466468A (en) | 2013-08-29 | 2013-08-29 | Superlift device, engineering machine and front tension device of superlift device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103466468A (en) |
| WO (1) | WO2015027842A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018102423A1 (en) * | 2018-02-02 | 2019-08-08 | Liebherr-Components Biberach Gmbh | Guy winch, guying fixture for demounting a crane jib with such guy winch and method for unclamping the jib of a crane |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001139283A (en) * | 1999-11-10 | 2001-05-22 | Mitsubishi Electric Corp | Hoisting device |
| CN202296903U (en) * | 2011-10-14 | 2012-07-04 | 三一汽车起重机械有限公司 | Winch locking device, tightening device and crane |
| CN102602827A (en) * | 2012-03-14 | 2012-07-25 | 中联重科股份有限公司 | Crane and super-lift 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 |
| CN203006810U (en) * | 2012-11-21 | 2013-06-19 | 泰安市新创工程机械有限公司 | Crane hoisting mechanism capable of dropping hook freely |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2239959Y (en) * | 1996-01-08 | 1996-11-13 | 温州广银集团公司 | Safety elevator |
| DE50306471D1 (en) * | 2002-06-05 | 2007-03-29 | Liebherr Werk Ehingen | Telescopic boom of a crane |
| DE202005009317U1 (en) * | 2005-06-14 | 2006-10-19 | Liebherr-Werk Ehingen Gmbh | Telescopic crane, has bracing device with V-shaped bracing supports which are bent opposite to rocker level, where bracing supports are supported according to type of derrick mechanism at revolving stage |
| CN101857176B (en) * | 2010-07-05 | 2013-04-10 | 三一汽车起重机械有限公司 | Super hoisting device and telescopic-boom hoisting equipment with same |
| CN102515039B (en) * | 2011-11-21 | 2014-01-15 | 三一汽车起重机械有限公司 | Crane and super-lifting device thereof |
| CN103466468A (en) * | 2013-08-29 | 2013-12-25 | 三一汽车起重机械有限公司 | Superlift device, engineering machine and front tension device of superlift device |
-
2013
- 2013-08-29 CN CN2013103841019A patent/CN103466468A/en not_active IP Right Cessation
-
2014
- 2014-08-20 WO PCT/CN2014/084766 patent/WO2015027842A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001139283A (en) * | 1999-11-10 | 2001-05-22 | Mitsubishi Electric Corp | Hoisting device |
| CN202296903U (en) * | 2011-10-14 | 2012-07-04 | 三一汽车起重机械有限公司 | Winch locking device, tightening device and crane |
| CN102602827A (en) * | 2012-03-14 | 2012-07-25 | 中联重科股份有限公司 | Crane and super-lift 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 |
| CN203006810U (en) * | 2012-11-21 | 2013-06-19 | 泰安市新创工程机械有限公司 | Crane hoisting mechanism capable of dropping hook freely |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015027842A1 (en) | 2015-03-05 |
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Effective date of abandoning: 20160406 |