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 PDF

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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
Application number
CN2013103841019A
Other languages
Chinese (zh)
Inventor
周建超
石丽君
胡爱田
Original Assignee
三一汽车起重机械有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三一汽车起重机械有限公司 filed Critical 三一汽车起重机械有限公司
Priority to CN2013103841019A priority Critical patent/CN103466468A/en
Publication of CN103466468A publication Critical patent/CN103466468A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details
    • B66C23/82Luffing gear
    • B66C23/821Bracing equipment for booms
    • B66C23/823Bracing equipment acting in vertical direction

Abstract

The invention provides a superlift device, an engineering machine, and a front tension device of the superlift device. The front tension device of the superlift device comprises a superlift winding device mounted on a mast, a pulley mounted on an arm section of a hoisting arm, and a steel wire rope, wherein the superlift winding device comprises a driving motor, a speed reducer connected with the driving motor by a transmission shaft, and a winding barrel coaxially connected with an output shaft of the speed reducer; a first end of the steel wire rope is arranged on the winding barrel in a rounding manner; a second end of the steel wire rope rounds the pulley and is then connected with the mast; and a brake is mounted on the transmission shaft. The front tension device of the superlift device runs reliably in a lifting process of the hoisting arm, and facilitates improving the hoisting performance of the hoisting arm.

Description

Front take-up device, super lifting device and the construction machinery and equipment of super lifting device

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)

1. the front take-up device of a super lifting device comprises:
Be arranged on the super lift winch device on mast, be arranged on the pulley on crane arm one joint arm, and steel rope; It is characterized in that,
Described super lift winch device comprises: CD-ROM drive motor (63); The reductor (62) be connected by transmission shaft (60) with described CD-ROM drive motor (63); With described reductor (62) the coaxial winding drum be connected of output shaft (61);
The first end winding of described steel rope is upper at described winding drum (61), and the second end winding is connected with described mast after crossing described pulley;
Drg (64) is installed on described transmission shaft (60).
2. front take-up device according to claim 1, it is characterized in that, between described drg (64) and described transmission shaft (60), free-wheel clutch (65) is installed, described free-wheel clutch (65) is put the rope rotation for limiting described transmission shaft (60).
3. front take-up device according to claim 2, is characterized in that, also comprises stretching force detecting apparatus and controller; Described stretching force detecting apparatus for after described crane arm completes expanding-contracting action, hang the pulling force that detects described steel rope before the loading product, when the pulling force that described steel rope detected is less than the first preset value, send the rope closing signal to described controller, rope closing occurs according to the described CD-ROM drive motor of described rope closing signal control (63) and rotates in described controller; When the pulling force that described steel rope detected is not less than described the first preset value, send danger signal to described controller, described controller is controlled described CD-ROM drive motor (63) according to described danger signal and is stopped operating.
4. front take-up device according to claim 3, is characterized in that,
Described stretching force detecting apparatus is the pulling force sensor be mounted on described steel rope;
Perhaps, described stretching force detecting apparatus is tensioning hydro-cylinder (5), and cylinder barrel end and the described mast of described tensioning hydro-cylinder (5) are hinged, and rod end is connected with the second end of described steel rope.
5. according to the described front take-up device of claim 2 or 3, it is characterized in that, described transmission shaft (60) is the integral type structure with the output shaft of described CD-ROM drive motor (63); Perhaps, described transmission shaft (60) is the integral type structure with the input shaft of described reductor (62).
6. front take-up device according to claim 2, is characterized in that, described drg (64) is normally closed brake.
7. front take-up device according to claim 1, is characterized in that, the first end of described mast is hinged on the arm head of the basic arm of crane arm, and described super lift winch device is arranged on the second end of described mast.
8. front take-up device according to claim 7, is characterized in that, described pulley is arranged on the arm head of minor details arm of described crane arm.
9. a super lifting device, is characterized in that, comprises the described front take-up device of any one in claim 1 to 8, also comprises the rear take-up device between the arm tail that is arranged on mast and crane arm basic arm.
10. a construction machinery and equipment comprises: chassis, be arranged on the turntable on described chassis, and the crane arm hinged with described turntable, is characterized in that, is provided with super lifting device claimed in claim 9 on described crane arm.
CN2013103841019A 2013-08-29 2013-08-29 Superlift device, engineering machine and front tension device of superlift device CN103466468A (en)

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)

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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

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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

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