CN102602827A - Crane and super-lift device thereof - Google Patents
Crane and super-lift device thereof Download PDFInfo
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- CN102602827A CN102602827A CN2012100663443A CN201210066344A CN102602827A CN 102602827 A CN102602827 A CN 102602827A CN 2012100663443 A CN2012100663443 A CN 2012100663443A CN 201210066344 A CN201210066344 A CN 201210066344A CN 102602827 A CN102602827 A CN 102602827A
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- mast
- lifting device
- surpassed
- hoisting crane
- super lifting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
- B66C23/821—Bracing equipment for booms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
- B66C23/821—Bracing equipment for booms
- B66C23/826—Bracing equipment acting at an inclined angle to vertical and horizontal directions
- B66C23/828—Bracing equipment acting at an inclined angle to vertical and horizontal directions where the angle is adjustable
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a super-lift device of a crane. The super-lift device (7) comprises a super-lift mast (78), a winch (76) and a compensation device, the winch (76) is mounted on the super-lift mast, a cantilever crane system of the crane is provided with a cantilever crane pulley device (1), a steel wire rope which is guided out from the winch passes through the cantilever crane pulley device and is guided back to the super-lift mast, the compensation device is used for adjusting the tightness of the steel wire rope, and the steel wire rope which is guided back to the super-lift mast is connected with the compensation device. The invention further discloses the crane using the super-lift device. The super-lift device is provided with the compensation device used for adjusting the tightness of the steel wire rope, accordingly, the steel wire rope can always be tightened by means of adjusting the tightness of the steel wire rope, loosening and cluttering of the steel wire rope can be effectively prevented, and conditions for accurately controlling the length of the steel wire rope, accurately controlling the cantilever crane system of the crane and improving the lifting performance of the crane are created.
Description
Technical field
The present invention relates to the super lifting device field, particularly, relate to a kind of super lifting device and the hoisting crane that uses this super lifting device of hoisting crane.
Background technology
Along with the development of industries such as wind-powered electricity generation, nuclear power, chemical industry, parts modularization and maximization day by day increases the increasing demand of hoister in large tonnage, and this requires hoisting crane to have higher lifting altitude and lifted load.Therefore, for example the hoisting crane of telescopic boom commonly used just develops towards the maximization direction.But higher lifting altitude rises load and will cause the component on the principal arm shear direction bigger with restarting, and makes that the amount of deflection of principal arm in the luffing plane is bigger, and the principal arm less stable of plane of rotation.For this problem; Even also can't address the above problem through increasing thinkings such as principal arm length, optimization principal arm shape, the principal arm sectional dimension that increases, raising principal arm strength of material; Therefore need by auxiliary device; Promote principal arm lifting altitude and lifting capacity through improving the arm force-bearing situation, to satisfy the requirement of market to hoister in large tonnage.Thereby a kind of super lifting device that effectively addresses the above problem has been born.
Wherein, a kind of super lifting device of the prior art is mainly formed by having surpassed mast, preceding tensioner mechanism and back tensioner mechanism.Surpass mast the inner and be articulated in basic arm; One end of back tensioner mechanism connects turntable; The other end is connected with the outer end that has surpassed mast, is connected with boom system and be arranged on the steel rope that has surpassed the preceding tensioner mechanism on the mast, and can carries out the folding and unfolding operation of steel rope through elevator.Like this; After the principal arm load, super lifting device can with the fractional load of principal arm along the axial action that surpass the mast direction on basic arm, thereby further improve the force-bearing situation of crane arm; The performance and the carrying of hoisting crane are provided, make that the operation of hoisting crane is more stable.
Yet also there are some problems in present super lifting device of the prior art, and for example the row of elevator rope is more random in the super lifting device; Loose and the mixed and disorderly phenomenon of steel rope takes place through regular meeting; Be unfavorable for the rope capacity on the preceding tensioner mechanism of accuracy control, thereby can't avoid left and right sides rope capacity inconsistent, more can't effectively regulate problems such as arm side sway; Thereby the effect and the practicality of super lifting device have been influenced, the lifting potential of performance hoisting crane that can't be maximum.
Summary of the invention
An object of the present invention is to provide a kind of super lifting device of hoisting crane, the steel rope row rope rule of this super lifting device, tight is created prerequisite for realizing the accuracy control length of steel wire rope.
Another object of the present invention a kind of hoisting crane is provided, this hoisting crane uses super lifting device provided by the invention.
To achieve these goals; The present invention provides a kind of super lifting device of hoisting crane; This super lifting device comprises and has surpassed mast and this has been installed at the elevator that has surpassed on the mast that the boom system of said hoisting crane is provided with the jib pulley gear, and the steel rope of drawing from said elevator passes through said jib pulley gear and draws back said ultra mast; Also comprise the compensating device of regulating said steel rope degree of tightness on the said super lifting device, draw back the said said steel rope that has surpassed mast and be connected with this compensating device.
Preferably, said compensating device comprises compensating cylinder, and first end of this compensating cylinder is connected said having surpassed on the mast, and second end is connected with said steel rope.
Preferably; First end of said compensating cylinder is fixed on said first end that has surpassed mast; Should surpass second end of mast be provided with and surpassed pulley gear, the said steel rope of drawing from said jib pulley gear passes through and is connected with second end of said compensating cylinder after this surpasses pulley gear.
Preferably, the said pulley gear that surpassed comprises a plurality of pulleys that surpassed that are arranged side by side, and said jib pulley gear comprises a plurality of jib pulleys that are arranged side by side accordingly, and said steel rope is successively through a plurality of jib pulleys and a plurality of pulley that surpassed.
Preferably, said elevator is installed in said first end that has surpassed mast, and this second end that has surpassed mast is provided with the conductor rope pulley, guides said jib pulley gear from the steel rope that said elevator is drawn into through this conductor rope pulley.
Preferably, said super lifting device comprises presses rope mechanism, and this pressure rope mechanism can be pressed on said steel rope on the said conductor rope pulley.
Preferably, said super lifting device is provided with catch gear, and this catch gear can the said elevator of release ground locking.
Preferably, said super lifting device comprises the long detecting device of the rope that is used for said elevator, and the long detecting device of this rope comprises the detecting device that is used to detect the angle that said elevator turns over, and the means of identification that is used to discern the current turned position of said elevator.
Preferably; The said mast that surpassed is symmetrically arranged two; These two have surpassed mast and have been installed on the mast support pivotally; Each is said surpassed be equipped with on the mast make said two surpassed mast near or the rotation oil cylinder that remotely pivots, first end of this rotation oil cylinder is hinged on said having surpassed on the mast, the other end is hinged on the said mast support.
Preferably, said mast support is hinged on the basic arm of said hoisting crane, and said super lifting device comprises amplitude oil cylinder, and an end of this amplitude oil cylinder is hinged on the said basic arm, and the other end is hinged on the said mast support.
According to a further aspect in the invention, a kind of hoisting crane is provided, said hoisting crane comprises the super lifting device of hoisting crane provided by the invention.
Preferably; Said hoisting crane comprises and is installed in the turntable on the chassis and is installed in the boom system on this turntable; This boom system comprises basic arm, along the flexible principal arm of basic arm be installed in the truss arm of this principal arm head; One end of said super lifting device is connected on the said basic arm, and said jib pulley gear is arranged on the afterbody of head or said truss arm of said principal arm.
Pass through technique scheme; Because super lifting device provided by the invention is provided with the compensating device of regulating the steel rope degree of tightness; Therefore can be through regulating the degree of tightness of steel rope; Make steel rope be in tensioned state all the time, thereby can prevent effectively that steel rope is loose, mixed and disorderly, and be that the boom system of accuracy control rope capacity, hoisting crane and the lifting performance that improves hoisting crane create conditions.
Other features and advantages of the present invention will partly specify in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of specification sheets, is used to explain the present invention with the following specific embodiment, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the local structure scheme drawing of a kind of embodiment of hoisting crane provided by the invention;
Fig. 2 is the local structure scheme drawing of the another kind of embodiment of hoisting crane provided by the invention;
Fig. 3 is the perspective view of super lifting device provided by the invention;
Fig. 4 is the perspective view of a kind of embodiment of the long detecting device of rope provided by the invention;
Fig. 5 is the structure intention of another embodiment of the long detecting device of rope provided by the invention.
Description of reference numerals
1 jib pulley gear, 2 steel ropes
5 turntables, 6 amplitude oil cylinder
7 super lifting devices, 8 truss arms
9 principal arm heads
71 press rope mechanism 72 conductor rope pulleys
Pulley gear 74 compensating cylinders 73 have been surpassed
75 catch gears, 76 elevators
The long detecting device of 77 ropes 78 has surpassed mast
79 mast bases, 80 oscillating oil cylinders
761 ratchets, 762 elevator supports
763 installation shaft
771 detecting devices, 772 identification parts
773 bases 774 are identified part
775 rotating shafts 776 detect support
The specific embodiment
Be elaborated below in conjunction with the accompanying drawing specific embodiments of the invention.Should be understood that the specific embodiment described herein only is used for explanation and explains the present invention, is not limited to the present invention.
In the present invention, do not doing under the situation of opposite explanation, the noun of locality of use is undefined like " upper and lower " hoisting crane normal working normally provided by the invention; Particularly can be with reference to page as depicted in figs. 1 and 2, in addition, " head " represented the upper end of parts; " afterbody " then represented the lower end of parts; Need to prove that these nouns of locality only are used to explain the present invention, are not limited to the present invention.
Extremely shown in Figure 2 like Fig. 1; In preferred implementation of the present invention; Hoisting crane provided by the invention comprises and is installed in the turntable 5 on the chassis (sign) and is installed in the boom system on this turntable 5, and this boom system comprises basic arm 4, along the flexible principal arm 9 of basic arm 4 be installed in the truss arm 8 of these principal arm 9 heads.Wherein, first end of super lifting device 7 provided by the invention is connected on the basic arm 4, tensioner mechanism 3 before second end connects, and this preceding tensioner mechanism 3 is connected with the afterbody of basic arm 4.
Extremely shown in Figure 3 like Fig. 1; Super lifting device 7 provided by the invention comprises and has surpassed mast 78 and be installed in this and surpassed the elevator 76 on the mast 78; The boom system of hoisting crane is provided with jib pulley gear 1; The steel rope 2 of drawing from elevator 76 is through jib pulley gears 1 and draw back ultra mast 78, acts on the basic arm 4 along the axial direction that has surpassed mast 78 with the load with boom system, and passes through and the cooperation of preceding tensioner mechanism 3; Improve the force-bearing situation of crane arm, upgrade the lifting performance of heavy-duty machine.Promptly realize the function of the preceding tensioner mechanism of super lifting device 7.In a kind of embodiment shown in Figure 1; Jib pulley gear 1 is arranged on the afterbody of truss arm 8; Strain boom systems to pass through steel rope 2, and in another embodiment shown in Figure 2, the jib pulley gear then is arranged on the head of principal arm; Can strain boom system equally like this, realize the purpose of super lifting device.
In order to realize the object of the invention, also comprise the compensating device of regulating steel rope 2 degrees of tightness on the super lifting device 7 provided by the invention, draw back the steel rope that has surpassed mast 78 and be connected with this compensating device.Therefore; Can be through regulating the degree of tightness of steel rope; Keep elevator row rope rule, tight in the elevator folding and unfolding rope process; Make steel rope be in suitable tensioned state all the time, thereby can prevent effectively that steel rope is loose, mixed and disorderly, and be that the boom system of accuracy control rope capacity, hoisting crane and the lifting performance that improves hoisting crane create conditions.
Need to prove that the embodiment that can realize above-mentioned purpose has multiple, for example the kind of compensating device, arrangement or the like; As long as under design of the present invention; Various compensating devices, arrangement etc. all drop in protection scope of the present invention, and the present invention is described for ease, in this introduction preferred implementation wherein; This preferred implementation only is used to explain the present invention, is not limited to the present invention.
In preferred implementation of the present invention, extremely shown in Figure 3 like Fig. 1, because the steel rope of super lifting device is stressed bigger usually; Preferably; Compensating device provided by the invention comprises compensating cylinder 74, and first end of this compensating cylinder 74 is connected and has surpassed on the mast 78, and second end is connected with steel rope.Therefore, realize that through the expansion performance of hydraulic ram the degree of tightness of steel rope is regulated, and convenient control, reliability is high.For example further tighten steel rope if desired, the retraction operation that then compensates oil cylinder gets final product, otherwise then compensates the operation of stretching out of oil cylinder, loose phenomenon do not occur with the steel rope that is twined on effective assurance elevator.Except compensating cylinder 74 installed by way of compensation, those skilled in the art can also be provided with the device of other scalable steel rope degrees of tightness it is replaced, as long as can realize the object of the invention, the present invention does not limit.
In order to guarantee the stable operation of compensating cylinder; Preferably; First end of compensating cylinder 74 is fixed on first end that has surpassed mast 78; And second end that has surpassed mast 78 is provided with and has surpassed pulley gear 73, and the steel rope 2 of drawing from jib pulley gear 1 then is connected with second end of compensating cylinder 74 through this ultra pulley gear 73.Promptly can the steel rope of drawing from jib pulley gear 1 further be turned to, make being fixed on that compensating cylinder 74 can be stable surpass on the mast 78 through having surpassed pulley gear, rationally distributed.
What is more important has surpassed pulley gear 73 and can cooperate with the jib pulley gear 1 on being arranged on boom system through being provided with, and realizes that many multiplying powers ground promotes the tension ability of the preceding tensioner mechanism of super lifting device 7.Particularly, surpassed pulley gear 73 and comprised a plurality of pulleys that surpassed that are arranged side by side, jib pulley gear 1 comprises a plurality of jib pulleys that are arranged side by side accordingly, and steel rope is successively through a plurality of jib pulleys and a plurality of pulley that surpassed.Be that steel rope can surpass round the winding repeatedly between pulley gear 73 and the jib pulley gear 1, many multiplying powers liftings of tensioner mechanism tension ability before realizing.As shown in Figures 2 and 3; Surpassed pulley gear 73 (Fig. 3 is visible) and jib pulley gear 1 and all be arranged side by side two pulley spares accordingly,, twined different (surpassed pulley gear 73 and all only be provided with a pulley spare) with jib pulley gear 1 with single among Fig. 1 referring to the trend of arrow; In Fig. 2; Steel rope 2 twines twice surpassing between pulley gear 73 and the jib pulley gear 1 to come and go, and therefore compares the mode that the single among Fig. 1 twines, can be with one times of the tension capability improving of preceding tensioner mechanism.In addition, under same load-up condition, adopt the mode of above-mentioned many pulleys also can reduce before the specification of tensioner mechanism, the thickness of steel rope etc. for example realizes the effects such as loss of weight of super lifting device.
Need to prove; Fig. 2 is a kind of embodiment for the set-up mode that pulley is described; In other NM embodiments, can also be with having surpassed pulley gear 73 and the more a plurality of pulleys of jib pulley gear 1 cooresponding setting, with the tension ability of the lifting super lifting device 7 of many multiplying powers.The set-up mode that the steel rope here twines assembly pulley is conventionally known to one of skill in the art, and those skilled in the art can carry out various changes or replacement to this set mode, as long as satisfy the object of the invention, the present invention does not limit this.
In order to make the rationally distributed of super lifting device 7, preferably, elevator 76 is installed in first end that has surpassed mast 78, and this second end that has surpassed mast 78 is provided with conductor rope pulley 72, guides jib pulley gear 1 from the steel rope that elevator 76 is drawn into through this conductor rope pulley 72.Promptly will carry out turning to the first time from the steel rope 2 that elevator 76 is drawn, and guide jib pulley gear 1 into through conductor rope pulley 72.And in order to tighten all the time and can not to get loose from the steel rope 2 that elevator 76 is drawn out to conductor rope pulley 72, preferably, super lifting device 7 also comprises presses rope mechanism 71, and this pressures mechanism 71 that restricts can be pressed on steel rope on the conductor rope pulley 72.In addition, in order to promote the reliability of elevator 76, preferably, super lifting device 7 also is provided with catch gear 75, and this catch gear 75 can release ground locking elevator 76.The rope of the pressure here mechanism and catch gear can for exist in this area or those skilled in the art thinkable any rope press device and catch gear, its principle, structure etc. have various ways, do not do too much at this and give unnecessary details.For example, press rope mechanism to realize compressing of steel rope and unclamp that wherein steel rope 2 passes between compressing member and conductor rope pulley 72 through the reciprocating compressing member of hydraulic oil cylinder driving; Catch gear then can be ratchet-type catch gear common in this area; The periphery that is about to elevator is set to a plurality of ratchets of uniformly-spaced arranging 761; And catch gear is in locking state following time, and its locking piece can act on the ratchet 761 of rope outlet direction, to realize that through this locking piece elevator can only unidirectionally rotate; Reduce the stressed of elevator bearing, and then improve the reliability of elevator.
To sum up; In the super lifting device that preferred implementation of the present invention provided; Elevator 76, conductor rope pulley 72, jib pulley gear 1, surpassed the above-mentioned preceding tensioner mechanism that pulley gear 73 and compensating cylinder 74 etc. have constituted super lifting device 7; And should before the row of tensioner mechanism restrict in order, tight, can create condition for the boom system of accuracy control hoisting crane.
In addition; In preferred implementation of the present invention, as shown in Figure 3, surpass mast 78 and be symmetrically arranged two; These two have surpassed mast 78 and have been pivotably mounted on the mast support 79; Each has surpassed to be equipped with on the mast 78 makes two to surpass mast 78 rotation oil cylinders 80 approaching or that remotely pivot, and first end of this rotation oil cylinder 80 is hinged on and has surpassed on the mast 78, and the other end is hinged on the mast support 79.Therefore can realize two relative rotations that surpassed mast 78 through rotation oil cylinder 80, to adapt to the different working conditions requirement.In addition, to shown in Figure 3, preferably, mast support 79 is hinged on the basic arm 4 of hoisting crane like Fig. 1, and super lifting device 7 comprises amplitude oil cylinder 6, and an end of this amplitude oil cylinder 6 is hinged on the basic arm 4, and the other end is hinged on the mast support 79.To pass through the luffing operation that amplitude oil cylinder 6 realizes the above-below direction of super lifting devices 7, with the practicality of further lifting super lifting device 7 provided by the invention.
In addition; In order to keep balance, super lifting device is provided with the preceding tensioner mechanism of two covers usually symmetrically, particularly; Super lifting device is provided with two usually symmetrically and has surpassed mast; Every preceding tensioner mechanism that has surpassed on the mast is all strained through steel rope with boom system, and therefore, the rope capacity unanimity that how to guarantee two preceding tensioners mechanism also is crucial.Because; If the rope capacity of two systems is inconsistent; Will cause the boom system both sides unbalance stress of hoisting crane, thereby the phenomenon of jib side sway occur, and then grave accident such as cause that jib fractures; Therefore, super lifting device provided by the invention also is provided with the long detecting device of the rope that is used for steel rope 2.Introduce the long detecting device of rope provided by the invention in detail below in conjunction with Fig. 4 and Fig. 5.
Also exist some to detect the long device of rope in the prior art; But these devices are detected object with the stressed of steel rope usually, can not guarantee the length of steel wire rope that elevator discharges, and can't avoid; The side sway phenomenon appears in the boom system that more can not regulate hoisting crane, for safety in production hides some dangers for.To this problem, the present invention provides the high rope of a kind of reliability long detecting device.The long detecting device 77 of this rope comprises the detecting device 771 that is used to detect the angle that elevator 76 turned over, and the means of identification 772,774 that is used to discern elevator 76 current turned positions.
In technique scheme; Because the long detecting device of rope provided by the invention has detecting device and means of identification simultaneously; Whether in the angle that the detection elevator turns over, can also discern the current turned position of elevator is to need satisfactory turned position; Thereby guaranteed to use the rope capacity of two preceding tensioners mechanism of super lifting device of the long detecting device of this rope consistent, thereby both upgraded the safety performance of heavy-duty machine, improved the lifting performance of hoisting crane again.
Need to prove that the current turned position of the elevator of mentioning among the present invention is meant the current circumferential position that the installation shaft around elevator of elevator periphery is rotated.In addition, the long detecting device of the rope of elevator provided by the invention except be used for the super lifting device, use the place of elevators at other, same being suitable for.In addition, the embodiment that can realize technique scheme also has multiple, the for example kind of detecting device and means of identification and arrangement etc., as long as can satisfy the object of the invention, the present invention does not all limit this type of change or replacement.
In preferred implementation of the present invention, the long detecting device of rope is set for ease, like Fig. 4 and shown in Figure 5, elevator 76 can be rotatably installed on the elevator support 762 through installation shaft 763.And elevator support 762 is being arranged on corresponding use occasion.For example in super lifting device provided by the invention, as shown in Figure 3, elevator support 762 is arranged on first end that has surpassed mast 78.
Wherein, preferably, detecting device 771 related among the present invention is a coder, and this coder one end is arranged on the elevator 76, and the other end is arranged on the installation shaft 763.Therefore, the end that coder is arranged on the installation shaft 763 is static, and the other end that is arranged on the elevator 76 can rotate with elevator 76 synchronously, thereby directly detects the angle that elevator 76 is turned over.The RM9000 coder that the coder that here uses can adopt Yi Fumen electronics Shanghai Co., Ltd for example to be sold; Except coder; Can also adopt that the detecting device of other kinds detects the angle that elevator 76 is turned in this area, for example various angular transducers etc.
And means of identification involved in the present invention comprises and is identified part 774 and can discerns the identification part 772 that this is identified part 774; Identification part 772 is arranged on the elevator support 762; Be identified part 774 for a plurality of; These are a plurality of to be identified on the circumferential outer edge that part 774 equally spaced is arranged on elevator 76, preferably is arranged on the ratchet 761 that forms with elevator 76 peripheries, promptly discerns part 772 and fixedly installs; And be identified part 774 movable (also can be set to be identified part 774 according to circumstances fixedly installs, and identification part 77 is movable).Wherein, Being identified part 774 has and can be identified the unique encoding value that part 772 reads; This unique encoding value is corresponding with a current turned position of elevator; The accuracy of identification of this current turned position depends on the number that is identified part 774 that the elevator periphery equally spaced is provided with, and being identified part 774, that number is set is many more, and the accuracy of identification of current turned position is then high more.
Thereby; Rotation along with elevator 76; Behind the identified region that is identified part 774 entering identification parts 772; Read and be identified unique encoded radio that part 774 is had by identification part 772, whether consistent through comparing this encoded radio with corresponding expected value, whether be satisfactory turned position with definite elevator 76 current turned positions.Therefore, can judge whether elevator has carried out satisfactory rotation, and confirm further whether the length of steel wire rope that elevator is discharged meets the requirements.In addition, means of identification involved in the present invention can be selected any code recognition system common in this area for use, RFID (RF identification) code recognition system that for example can select for use Yi Fumen electronics Shanghai Co., Ltd to be sold, and the present invention does not limit this.It should be noted that Fig. 4 and Fig. 5 only are structure and the mounting meanss that schematically shows the long detecting device of rope provided by the invention, only be used to explain the present invention, be not limited to the present invention.
In actual use; In the time of for example on the super lifting device that the long detecting device of rope provided by the invention is applied to hoisting crane provided by the invention; Be provided with first expected value and second expected value in the control system of super lifting device; Wherein, the angle value that elevator turned over that first expected value is used for detecting with detecting device 771 compares, and the encoded radio of the current turned position of representative elevator that second expected value is used for discerning with means of identification compares.Before hoisting crane begins hoisting operation; After elevator 76 is put the rope operation; At first whether consistent with second expected value through two current turned positions that surpassed the elevator 76 on the mast 78 of means of identification identification; When one of them or all occur explaining that then steel rope 2 length of two preceding tensioners mechanism are inequality when inconsistent, need to regulate the length of steel rope 2.At this moment, the control system of super lifting device can read the current reading value (being the angle that elevator turns over) of detecting device 771 (coder), and converts with first expected value, and control has surpassed elevator 76 and does corresponding rotation then.For example, the current reading value of coder 76 is during greater than first expected value, and then cooresponding steel rope 2 length are long, needs elevator 76 to receive the rotation operation of rope direction, otherwise then needs elevator 76 to put the rotation of rope direction.And when having surpassed elevator 61 rotations, detecting device 771 (coder) can accurately detect the angle that elevator 76 is rotated, and when the current reading value of detecting device 771 (coder) was consistent with first expected value, control system was then controlled elevator 76 and stopped operating.At this moment; Particularity in order to ensure rope capacity; Identification part 772 in the means of identification will read the encoded radio that is identified part 774, and this encoded radio and second expected value are compared, if consistent; Then the current turned position of elevator meets the requirements, and then the current length of definite steel rope meets the requirements; If deviation then possibly break down in the preceding tensioner mechanism of super lifting device, need carry out malfunction elimination and get rid of fault.Up to all pass through the detection of detecting device and means of identification when two systems after, hoisting crane could operation.
Therefore; Double check through detecting device and means of identification; Two length that surpassed the pairing steel rope 2 of mast that can guarantee super lifting device are consistent; And effectively avoided occurring the problem of deviation, thereby prevented because the jib both sides discontinuity of the inconsistent hoisting crane that causes of steel rope 2 length, and then avoided the accident that the jib side sway takes place even fracture.In addition,, make that super lifting device and boom system force-bearing situation coupling is more excellent,, further upgrade the lifting performance of heavy-duty machine with the potential that hoists of performance super lifting device and boom system through the length of accuracy control steel rope 2.
In the present invention, the mounting means of each parts have many in distortion, the mounting means of for example discerning part 772 just has multiple, wherein as shown in Figure 4, identification part 772 is fixed on the elevator support 762 through base 773.And in Fig. 5, rotatably be provided with on the elevator support 776 and detect support 776, first end of this detection support 776 is hinged on the elevator support 776 through rotating shaft 775, and identification part 772 is arranged on second end that detects support 776.The position of promptly discerning part 772 can mobilizablely be provided with.Those skilled in the art can also carry out the various changes that can expect and realize to above-mentioned mounting structure, as long as satisfy the object of the invention, the present invention does not limit.
To sum up, the long detecting device of rope provided by the invention, super lifting device and hoisting crane are practical, and reliability is high, can accuracy control crane jib frame system, thus upgrade the performance and the safety of heavy-duty machine, have higher promotional value.
More than combine accompanying drawing to describe preferred implementation of the present invention in detail; But; The present invention is not limited to the detail in the above-mentioned embodiment; In technical conceive scope of the present invention, can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove in addition; Each concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up through any suitable manner; For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be regarded as the disclosed content of the present invention equally.
Claims (12)
1. the super lifting device of a hoisting crane; This super lifting device (7) comprises and has surpassed mast (78) and this has been installed at the elevator (76) that has surpassed on the mast (78); The boom system of said hoisting crane is provided with jib pulley gear (1); The steel rope (2) of drawing from said elevator (76) passes through said jib pulley gear (1) and draws back said ultra mast (78); It is characterized in that, also comprise the compensating device of regulating said steel rope (2) degree of tightness on the said super lifting device (7), draw back the said said steel rope that has surpassed mast (78) and be connected with this compensating device.
2. the super lifting device of hoisting crane according to claim 1 is characterized in that, said compensating device comprises compensating cylinder (74), and first end of this compensating cylinder (74) is connected said having surpassed on the mast (78), and second end is connected with said steel rope.
3. the super lifting device of hoisting crane according to claim 2; It is characterized in that; First end of said compensating cylinder (74) is fixed on said first end that has surpassed mast (78); Second end that should surpass mast (78) is provided with and has surpassed pulley gear (73), and the said steel rope (2) of drawing from said jib pulley gear (1) be connected with second end of said compensating cylinder (74) through surpassing pulley gear (73) back.
4. the super lifting device of hoisting crane according to claim 3; It is characterized in that; The said pulley gear (73) that surpassed comprises a plurality of pulleys that surpassed that are arranged side by side; Said jib pulley gear (1) comprises a plurality of jib pulleys that are arranged side by side accordingly, and said steel rope is successively through a plurality of jib pulleys and a plurality of pulley that surpassed.
5. according to the super lifting device of any described hoisting crane among the claim 1-4; It is characterized in that; Said elevator (76) is installed in said first end that has surpassed mast (78); Second end that should surpass mast (78) is provided with conductor rope pulley (72), guides said jib pulley gear (1) from the steel rope that said elevator (76) is drawn into through this conductor rope pulley (72).
6. the super lifting device of hoisting crane according to claim 5 is characterized in that, said super lifting device (7) comprises presses rope mechanism (71), and this pressure rope mechanism (71) can be pressed on said steel rope on the said conductor rope pulley (72).
7. according to the super lifting device of any described hoisting crane among the claim 1-4, it is characterized in that said super lifting device (7) is provided with catch gear (75), this catch gear (75) can release ground locking said elevator (76).
8. according to the super lifting device of any described hoisting crane among the claim 1-4; It is characterized in that; Said super lifting device (7) comprises the long detecting device of rope (77) that is used for said elevator (76); The long detecting device of this rope (77) comprises the detecting device (771) that is used to detect the angle that said elevator (76) turned over, and the means of identification (772,774) that is used to discern the current turned position of said elevator (76).
9. according to the super lifting device of any described hoisting crane among the claim 1-4; It is characterized in that; The said mast (78) that surpassed is symmetrically arranged two, and these two have surpassed mast (78) and are installed in pivotally on the mast support (79), each is said surpassed be equipped with on the mast (78) make said two surpassed mast (78) near or the rotation oil cylinder (80) that remotely pivots; First end of this rotation oil cylinder (80) is hinged on said having surpassed on the mast (78), and the other end is hinged on the said mast support (79).
10. the super lifting device of hoisting crane according to claim 9; It is characterized in that; Said mast support (79) is hinged on the basic arm (4) of said hoisting crane; Said super lifting device (7) comprises amplitude oil cylinder (6), and an end of this amplitude oil cylinder (6) is hinged on the said basic arm (4), and the other end is hinged on the said mast support (79).
11. a hoisting crane is characterized in that, said hoisting crane comprises the super lifting device according to any described hoisting crane among the claim 1-10.
12. hoisting crane according to claim 11; It is characterized in that; Said hoisting crane comprises the turntable (5) that is installed on the chassis and is installed in the boom system on this turntable (5); This boom system comprises basic arm (4), along the flexible principal arm (9) of basic arm (4) be installed in the truss arm (8) of this principal arm (9) head; One end of said super lifting device is connected on the said basic arm (4), and said jib pulley gear (1) is arranged on the afterbody of head or said truss arm (8) of said principal arm (9).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210066344.3A CN102602827B (en) | 2012-03-14 | 2012-03-14 | Crane and super-lift device thereof |
| PCT/CN2012/082166 WO2013135041A1 (en) | 2012-03-14 | 2012-09-27 | Super-lift device of crane and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210066344.3A CN102602827B (en) | 2012-03-14 | 2012-03-14 | Crane and super-lift device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102602827A true CN102602827A (en) | 2012-07-25 |
| CN102602827B CN102602827B (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210066344.3A Active CN102602827B (en) | 2012-03-14 | 2012-03-14 | Crane and super-lift device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102602827B (en) |
| WO (1) | WO2013135041A1 (en) |
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| CN102887455A (en) * | 2012-09-26 | 2013-01-23 | 三一重工股份有限公司 | Method, device and system for controlling pre-tightening force of super lift device |
| CN103010969A (en) * | 2012-12-07 | 2013-04-03 | 中联重科股份有限公司 | Crane, guying mast and pulling pre-tightening device of guying mast |
| WO2013135041A1 (en) * | 2012-03-14 | 2013-09-19 | 中联重科股份有限公司 | Super-lift device of crane and crane |
| CN103420296A (en) * | 2013-08-29 | 2013-12-04 | 徐州重型机械有限公司 | Super-lifting device, front pre-tightened steel wire rope length control system and crane |
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| DE102017000009A1 (en) * | 2017-01-02 | 2018-07-05 | Liebherr-Werk Ehingen Gmbh | Jig for a jib of a crane |
| CN113247800A (en) * | 2021-05-31 | 2021-08-13 | 徐州重型机械有限公司 | Crane with a movable crane |
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| DE102015000473B4 (en) * | 2015-01-14 | 2024-02-22 | Liebherr-Werk Ehingen Gmbh | Crane with bracing |
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| WO2014029154A1 (en) * | 2012-08-24 | 2014-02-27 | 中联重科股份有限公司 | Engineering machinery, main arm thereof, and method for detecting and correcting side bending of main arm |
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| CN103010969A (en) * | 2012-12-07 | 2013-04-03 | 中联重科股份有限公司 | Crane, guying mast and pulling pre-tightening device of guying mast |
| CN103420296A (en) * | 2013-08-29 | 2013-12-04 | 徐州重型机械有限公司 | Super-lifting device, front pre-tightened steel wire rope length control system and crane |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013135041A1 (en) | 2013-09-19 |
| CN102602827B (en) | 2014-10-01 |
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