CN102701085A - Hoisting device and crane - Google Patents
Hoisting device and crane Download PDFInfo
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- CN102701085A CN102701085A CN2012102061119A CN201210206111A CN102701085A CN 102701085 A CN102701085 A CN 102701085A CN 2012102061119 A CN2012102061119 A CN 2012102061119A CN 201210206111 A CN201210206111 A CN 201210206111A CN 102701085 A CN102701085 A CN 102701085A
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- arm
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Abstract
The invention discloses a hoisting device and a crane. The hoisting device comprises a lazy arm, a guy and a guy cable arranged between the guy and the lazy arm, wherein guide pulleys are respectively arranged at the head of the lazy arm and the guy; one end of the guy cable is fixed to the guy; and after other parts of the guy cable sequentially surround the guide pulley at the head of the lazy arm and the guide pulley on the guy, connecting points are formed between the guy cable and the lazy arm. According to the hoisting device, under the condition that no extra tackle is provided, the increase of the multiplying power of the guy cable is realized and the great increase of a pulling force of the guy cable is realized, so that the hoisting capability of the lazy arm is improved. In addition, due to arrangement of the guide pulleys, at least two connecting points are formed between the guy cable and the lazy arm, and further a discrete arrangement structure is formed by the guy cable relative to the lazy arm, the aim of discrete force is achieved, the stress condition of the lazy arm is improved, the stress of the lazy arm is more uniform and the bearing capacity of the lazy arm is improved. Meanwhile, the probability that the lazy arm is sidewise bent during heavy load is reduced.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of lifting appliance.The invention still further relates to a kind of hoisting crane with above-mentioned lifting appliance.
Background technology
Along with growing lifting demand, the full ground of large-tonnage hoisting crane has appearred, and hoister in large tonnage is when lifting; Its arm need bear great load; Arm is longer, be out of shape bigger, through general optimization arm cross section, improve the lifting demand that mode such as arm strength of material all can't satisfy the full ground of large-tonnage hoisting crane; For this reason, be provided with super lifting device at the crane arm place at present.
As shown in Figure 1, Fig. 1 is a kind of structural representation of representative type hoisting crane.
Having surpassed 12 has and has surpassed 12; Arm 11 is generally telescopic boom; Rotatably be connected on the basic arm of telescopic boom having surpassed 12, surpassed 12 head and be connected through rope for traction, simultaneously with the car body or the afterbody of arm 11; Surpassed 12 head also is connected to arm 11 through drag-line 13 head, i.e. the end of arm 11.Then having surpassed 12 can lift arm 11 through drag-line 13, in conjunction with the oil cylinder that drives arm 11 luffings, has realized arm 11 lifting large-tonnage weights.
Yet, along with the further lifting that lifting appliance is required, above-mentioned 12 the lifting appliance of having surpassed is set still has following problems:
The first, the pulling force that has surpassed 12 pairs of arms 11 is the pulling force of drag-line 13; And the pulling force of drag-line 13 provides by having surpassed 12 elevators or motor; The power that having surpassed 12 elevators or motor provides is limited, and therefore, the pulling force that has surpassed 12 pairs of arms 11 receives certain restriction; Bigger drag-line 13 power can't be provided, can not let the hoisting crane overall performance obtain bigger lifting.
The second, the arm 11 of the full ground of super-tonnage hoisting crane is longer, and its stressing conditions relative complex lifts under the situation of arm 11 heads having surpassed 12, and still there is the situation of unbalance stress in arm 11, causes properties of product to reduce; And because brachium is longer, when surpass 12 pulling force and lift heavy amount and acquiring a certain degree, non-expection will take place and be out of shape in arm 11, such as side sway, have a strong impact on the operating cycles of lifting by crane quality and lifting appliance.
In view of this, how providing a kind of can the lifting to surpass the drag-line pulling force, and then promote the lifting appliance of lifting equipment integral performance, is the technical matters that those skilled in the art need to be resolved hurrily.
Summary of the invention
For solving the problems of the technologies described above, the present invention provides a kind of lifting appliance, and this lifting appliance can promote the pulling force that has surpassed drag-line, and then promotes the overall performance of lifting appliance.
Lifting appliance provided by the invention; Comprise arm and surpass; And be located at said surpassed and said arm between drag-line, the head of said arm and said having surpassed are equipped with track adjusting wheel, an end of said drag-line is fixed in said surpassing; The remainder of said drag-line around after the track adjusting wheel of said arm head, the track adjusting wheel on said having surpassed, has point of connection with said arm in regular turn.
Preferably, said drag-line around the track adjusting wheel on said having surpassed after, be directly fixed on said arm, the fixed position is said point of connection.
Preferably, an end of said drag-line is fixed in the said end that has surpassed away from said arm, and the said track adjusting wheel that has surpassed also is located at said this end that has surpassed.
Preferably, said drag-line around the track adjusting wheel on said having surpassed after, be directly fixed on the middle part of said arm.
Preferably; The number of track adjusting wheel is at least two on the said arm; The said track adjusting wheel number that has surpassed is at least one, said drag-line according to the track adjusting wheel on the said arm, the said order that has surpassed track adjusting wheel in regular turn around, and be fixed in said arm or said having surpassed.
Preferably; Said arm is provided with two track adjusting wheels, and a track adjusting wheel is located at the head of said arm, and another track adjusting wheel is located at the middle part of said arm; Said having surpassed only established a said track adjusting wheel; Said drag-line around the track adjusting wheel on said having surpassed after, continue track adjusting wheel, and be fixed in said having surpassed around said arm middle part.
Preferably, said arm comprises principal arm and auxiliary, and the head of said auxiliary is the head of said arm, and said point of connection is positioned on the said principal arm.
Preferably, said auxiliary is a truss structure, and the head of said auxiliary is provided with support, and the track adjusting wheel of said arm head is connected on the said support.
This invention provides on having surpassed of lifting appliance and the arm and is equipped with track adjusting wheel; Drag-line is connected to the arm place and with arm with can pulling back once again after the head of arm is connected; Under situation not by extra rigging, the increase that has realized having surpassed the drag-line multiplying power, and to promote at least be 3 multiplying powers.Therefore, this drag-line tractive mode has realized the significantly lifting of drag-line pulling force, makes the arm crane capacity improve, and hoisting crane complete machine performance also is able to promote.In addition, track adjusting wheel is set after, drag-line is after around each track adjusting wheel; Must produce the point of connection except that head with arm, promptly drag-line and arm have at least two point of connection, make drag-line form the discrete type arrangement structure with respect to arm; Then can reach discrete stressed purpose, thereby improve the force-bearing situation of arm, make it stressed more even; Improve the load-carrying capacity of arm, in this simultaneously, also reduced the probability of arm side sway when heavily loaded.
The present invention also provides a kind of hoisting crane, comprises car body and is located at the lifting appliance on the car body, and said lifting appliance is above-mentioned each described lifting appliance.
Preferably, comprise also being connected in said arm and can setting up arm that the suspension hook of hoisting crane is located at the said head of setting up arm with respect to what said arm rotated.
Because above-mentioned lifting appliance has above-mentioned technique effect, the hoisting crane with this lifting appliance also has identical technique effect.
Description of drawings
Fig. 1 is a kind of structural representation of representative type hoisting crane;
Fig. 2 is the structural representation of first kind of specific embodiment with hoisting crane of lifting appliance provided by the present invention;
Fig. 3 is the structural representation of second kind of specific embodiment with hoisting crane of lifting appliance provided by the present invention;
Fig. 4 is the structural representation of the third specific embodiment with hoisting crane of lifting appliance provided by the present invention.
Among Fig. 1:
11 arms, 12 surpassed, 13 drag-lines;
Among Fig. 2-4:
21 arms, 22 surpassed, 23 drag-lines, 24 first track adjusting wheels, 25 second track adjusting wheels, 26 suspension hooks, 27 the 3rd track adjusting wheels, 28 set up arm, 29 supports, 30 stay cords, 31 pull bars, 211 principal arms, 212 auxiliarys.
The specific embodiment
Core of the present invention is for providing a kind of lifting appliance, and this lifting appliance can promote the pulling force that has surpassed drag-line, and then promotes the overall performance of lifting appliance.
Another core of the present invention provides a kind of hoisting crane.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.Describe for ease of understanding with succinct, following embodiment will combine hoisting crane to describe lifting appliance, and certainly, lifting appliance also can be applicable on other lifting appliances according to actual needs.
Please refer to Fig. 2, Fig. 2 is the structural representation of first kind of specific embodiment with hoisting crane of lifting appliance provided by the present invention.
Be provided with lifting appliance on the car body of hoisting crane, lifting appliance comprises arm 21 and surpassed 22, and arm 21 is generally concertina type arm 21, and promptly telescopic boom has surpassed 22 and then rotatably has been connected on the arm 21, generally is connected on the basic arm of concertina type arm 21.Lifting appliance also comprise be located at surpassed 22 and arm 21 between drag-line 23, drag-line 23 tractives surpassed 22 with the head of arm 21, surpassed 22 and the afterbody of arm 21 or car body between also have the connection rope for traction, as shown in Figure 2.
Among this embodiment, be provided with first track adjusting wheel 24, surpassed 22 and be provided with second track adjusting wheel 25 at the head of arm 21.One end of drag-line 23 is fixed in and has surpassed 22; Can the reel of drag-line 23 be fixed in has surpassed on 22; The remainder of drag-line 23 in regular turn around first track adjusting wheel 24 of arm 21 heads, surpassed second track adjusting wheel 25 on 22 after; Be directly fixed on the arm 21, promptly drag-line 23 roughly be " Z " type be arranged in surpassed 22 and arm 21 between.
Surpassed 22 with arm 21 on all track adjusting wheel is set after; Drag-line 23 is connected to arm 21 places and with arm 21 with can pulling back once again after the head of arm 21 is connected; As can beappreciated from fig. 2; Under situation not by extra rigging, the increase that has realized having surpassed 22 drag-lines, 23 multiplying powers, first track adjusting wheel 24 and second track adjusting wheel 25 make single cable 23 can promote 3 multiplying powers and lift arm 21.Therefore, these drag-line 23 tractive modes have realized the significantly lifting of drag-line 23 pulling force, make arm 21 crane capacities improve, and hoisting crane complete machine performance also is able to promote.In addition, first track adjusting wheel 24 and second track adjusting wheel 25 are set after, drag-line 23 is after around each track adjusting wheel; The inevitable point of connection that produces except that head with arm 21, promptly drag-line 23 has at least two point of connection with arm 21, makes drag-line 23 form the discrete type arrangement structure with respect to arm 21; Then can reach discrete stressed purpose; Thereby improve the force-bearing situation of arm 21, make it stressed more even, improve the load-carrying capacity of arm 21; In this simultaneously, because the improvement of strained condition, also reduced the probability of arm 21 side sways when heavily loaded, thereby improved the lifting quality, and prolonged the operating cycles of lifting appliance.
Surpassed 22 with arm 21 in the lifting process; The process of meeting accompanying rotation luffing; Drag-line 23 can change length and angle thereupon, for the ease of the servo-actuated of drag-line 23, can first track adjusting wheel 24 and second track adjusting wheel 25 is located at arm 21 rotationally respectively and surpass on 22; As shown in Figure 2, first track adjusting wheel 24 and second track adjusting wheel 25 all through pulled by cable in arm 21 with ultra 22 on.
Can second track adjusting wheel 25 be located at and surpass 22 end, an end of drag-line 23 also is fixed in and has surpassed 22 end, makes drag-line 23 can bring into play its traction force to greatest extent.In view of having surpassed 22 structure, second track adjusting wheel 25 is located at surpasses 22 end, also be convenient to actual arrangement.
To above-mentioned each embodiment, drag-line 23 around the track adjusting wheel that has surpassed on 22 after, can be directly fixed on the middle part of arm 21.As shown in Figure 2; Drag-line 23 is positioned at arm 21 heads with first point of connection of arm 21; Second point of connection is positioned at arm 21 middle parts, and as stated, the discrete type of drag-line 23 is arranged the stressing conditions that can change arm 21; Drag-line 23 and two point of connection of arm 21 are arranged in the head and the middle part of arm 21 respectively, make the stressed more even of arm 21.
Lifting appliance in the foregoing description has been realized 3 times of liftings of drag-line 23 pulling force, on this basis, can expect, can also continue to promote the pulling force of drag-line 23.As shown in Figure 3, Fig. 3 is the structural representation of second kind of specific embodiment with hoisting crane of lifting appliance provided by the present invention.
Different with the foregoing description is; Be provided with two track adjusting wheels on the arm 21 among this embodiment, first track adjusting wheel 24 except head also comprises the 3rd track adjusting wheel 27; Surpassed and still only established second track adjusting wheel 25 on 22; Then drag-line 23 around second track adjusting wheel 25 that has surpassed on 22 after, can continue around the 3rd track adjusting wheel 27 on the arm 21, and finally be fixed in and surpassed on 22.At this moment, realized that 4 multiplying powers of drag-line 23 pulling force promote, the 3rd track adjusting wheel 27 is second point of connection of drag-line 23 and arm 21 with the point of connection of arm 21.Equally, for arm 21 stressed evenly, can the 3rd track adjusting wheel 27 be located at the middle part of arm 21.
Can know that from above-mentioned each embodiment in fact, arm 21 all can be provided with more than one track adjusting wheel with having surpassed on 22; One end of drag-line 23 is fixed in and has surpassed 22; Remainder can be according to first track adjusting wheel on the arm 21, surpassed on first track adjusting wheel on 22, the arm 21 second track adjusting wheel, surpassed second track adjusting wheel on 22 ... order in regular turn around, and finally be fixed in arm 21 or surpassed on 22, thereby realize 23 designs of many multiplying powers drag-line; Reach the purpose that promotes drag-line 23 power; At this moment, drag-line 23 also increases at least three with the point of connection of arm 21, makes the strained condition of arm 21 further be improved.
Need to prove; From present actual condition owing to surpassed 22 specification limits, surpassed 22 and arm 21 between the space still limited; Drag-line 23 too much may interfere around number of times; So preferably adopt first kind of discrete type arrangement in the specific embodiment, promptly arm 21 all is provided with a track adjusting wheel with having surpassed on 22, and drag-line 23 finally is fixed on the arm 21; This kind set-up mode on the basis that promotes drag-line 23 pulling force, around drag-line 23 can mutually noninterfere ground tractive arm 21.
Please continue with reference to figure 4, Fig. 4 is the structural representation of the third specific embodiment with hoisting crane of lifting appliance provided by the present invention.
Different with above-mentioned two kinds of embodiment, the arm 21 of this embodiment comprises principal arm 211 and auxiliary 212, and principal arm 211 is connected on the car body; Auxiliary 212 is connected with the head of principal arm 211; At this moment, the head of auxiliary 212 is the head of arm 21, first track adjusting wheel 24 is located at the head of auxiliary 212.Drag-line 23 is pulled back to arm 21 fixedly the time; Can drag-line 23 be directly fixed on the principal arm 211; Promptly second point of connection is positioned on the principal arm 211, among Fig. 4 drag-line 23 is fixed in the head of principal arm 211, and the head of principal arm 211 is equivalent to the middle part of whole arm 21 at this moment; Then principal arm 211 all is connected with drag-line 23 with auxiliary 212, and tractive is more even.The cooperation of principal arm 211 and auxiliary 212 makes that lifting appliance can be according to the length of lifting demand adjustment arm 21.
Auxiliary 212 can adopt truss structure; And truss structure is convenient to arrange support 29; Then support 29 can be set at the head of auxiliary 212, and first track adjusting wheel 24 is connected on the support 29, this kind set-up mode can widen surpassed 22 and arm 21 between the space; Be convenient to drag-line 23 and arrange, avoid interfering.
For the super-tonnage hoisting crane, except the arm 21 that comprises principal arm 211 and auxiliary 212, can also comprise be connected in arm 21 heads set up arm 28; Setting up arm 28 can rotate with respect to arm 21; And the suspension hook 26 of hoisting crane is located at the head of setting up arm 28, and as shown in Figure 4, set up the head that arm 28 is connected in auxiliary 212; Arm 21 can stretch and luffing; Setting up arm 28 can be with respect to arm 21 luffing through stay cord 30 and pull bar 31, and then the crane capacity of the hoisting crane of this kind structure is higher, and the lifting alerting ability also is able to strengthen.
More than a kind of lifting appliance provided by the present invention and hoisting crane have all been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. lifting appliance; Comprise arm (21) and surpass (22), and be located at the drag-line (23) between said surpassing (22) and the said arm (21), it is characterized in that; The head of said arm (21) and be equipped with track adjusting wheel on said surpassing (22); One end of said drag-line (23) is fixed in said surpassing (22), and the remainder of said drag-line (23) around after the track adjusting wheel of said arm (21) head, the track adjusting wheel on said surpassing (22), has point of connection with said arm (21) in regular turn.
2. lifting appliance according to claim 1 is characterized in that, said drag-line (23) around the track adjusting wheel on said surpassing (22) after, be directly fixed on said arm (21), fixing position is said point of connection.
3. lifting appliance according to claim 2 is characterized in that, an end of said drag-line (23) is fixed in goes up the end away from said arm (21) said surpassing (22), and the said track adjusting wheel that has surpassed also is located at this end of said surpassing (22).
4. according to claim 2 or 3 described lifting appliances, it is characterized in that, said drag-line (23) around the track adjusting wheel on said surpassing (22) after, be directly fixed on the middle part of said arm (21).
5. lifting appliance according to claim 1; It is characterized in that; The number that said arm (21) is gone up track adjusting wheel is at least two; Track adjusting wheel number on said surpassing (22) is at least one, said drag-line (23) according to the order of track adjusting wheel on the track adjusting wheel on the said arm (21), said surpass (22) in regular turn around, and be fixed in said arm (21) or on said surpassing (22).
6. lifting appliance according to claim 5 is characterized in that said arm is provided with two track adjusting wheels; One track adjusting wheel is located at the head of said arm; Another track adjusting wheel is located at the middle part of said arm (21), only establishes a track adjusting wheel on said surpassing (22), said drag-line (23) around the track adjusting wheel on said surpassing (22) after; Continuation is around the track adjusting wheel at said arm (21) middle part, and is fixed on said surpassing (22).
7. according to claim 1-3,5 each described lifting appliances; It is characterized in that; Said arm (21) comprises principal arm (211) and auxiliary (212), and the head of said auxiliary (212) is the head of said arm (21), and said point of connection is positioned on the said principal arm (211).
8. lifting appliance according to claim 7 is characterized in that, said auxiliary (212) is a truss structure, and the head of said auxiliary (212) is provided with support (29), and the track adjusting wheel of said arm (21) head is connected on the said support (29).
9. a hoisting crane comprises car body and is located at the lifting appliance on the car body, it is characterized in that said lifting appliance is each described lifting appliance of claim 1-8.
10. hoisting crane according to claim 9 is characterized in that, also comprises being connected in said arm (21) and can setting up arm (28) with respect to what said arm (21) rotated, and the suspension hook of hoisting crane (26) is located at the said head of setting up arm (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210206111.9A CN102701085B (en) | 2012-06-20 | 2012-06-20 | Hoisting device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210206111.9A CN102701085B (en) | 2012-06-20 | 2012-06-20 | Hoisting device and crane |
Publications (2)
| Publication Number | Publication Date |
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| CN102701085A true CN102701085A (en) | 2012-10-03 |
| CN102701085B CN102701085B (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210206111.9A Active CN102701085B (en) | 2012-06-20 | 2012-06-20 | Hoisting device and crane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185655A (en) * | 2016-08-31 | 2016-12-07 | 徐州重型机械有限公司 | Crane arm bracing means and crane |
| CN112850508A (en) * | 2021-02-20 | 2021-05-28 | 三一汽车起重机械有限公司 | Crane |
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| JP2000109288A (en) * | 1998-10-01 | 2000-04-18 | Sumitomo Constr Mach Co Ltd | Hoisting mechanism in boom intermediate part of crane |
| DE102008035583A1 (en) * | 2008-07-30 | 2010-02-11 | Liebherr-Werk Ehingen Gmbh | Telescopic boom for crane i.e. mobile crane, has anchoring cylinders arranged in support braces for defined anchoring of suspension rope, where free ends of suspension rope are fastened to anchoring cylinders |
| CN102180413A (en) * | 2011-05-20 | 2011-09-14 | 长沙中联重工科技发展股份有限公司 | Hoisting arm support system and hoisting apparatus including same |
| JP2011195236A (en) * | 2010-03-18 | 2011-10-06 | Tadano Ltd | Working machine with boom |
| CN102241370A (en) * | 2010-05-10 | 2011-11-16 | 利勃海尔-韦尔克爱茵根有限公司 | Crane and method for erecting the crane |
| JP2012041149A (en) * | 2010-08-20 | 2012-03-01 | Tadano Ltd | Mobile crane |
| CN202671067U (en) * | 2012-06-20 | 2013-01-16 | 徐州重型机械有限公司 | Hoisting device and crane |
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2012
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000109288A (en) * | 1998-10-01 | 2000-04-18 | Sumitomo Constr Mach Co Ltd | Hoisting mechanism in boom intermediate part of crane |
| DE102008035583A1 (en) * | 2008-07-30 | 2010-02-11 | Liebherr-Werk Ehingen Gmbh | Telescopic boom for crane i.e. mobile crane, has anchoring cylinders arranged in support braces for defined anchoring of suspension rope, where free ends of suspension rope are fastened to anchoring cylinders |
| JP2011195236A (en) * | 2010-03-18 | 2011-10-06 | Tadano Ltd | Working machine with boom |
| CN102241370A (en) * | 2010-05-10 | 2011-11-16 | 利勃海尔-韦尔克爱茵根有限公司 | Crane and method for erecting the crane |
| JP2012041149A (en) * | 2010-08-20 | 2012-03-01 | Tadano Ltd | Mobile crane |
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| CN202671067U (en) * | 2012-06-20 | 2013-01-16 | 徐州重型机械有限公司 | Hoisting device and crane |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185655A (en) * | 2016-08-31 | 2016-12-07 | 徐州重型机械有限公司 | Crane arm bracing means and crane |
| CN112850508A (en) * | 2021-02-20 | 2021-05-28 | 三一汽车起重机械有限公司 | Crane |
| CN112850508B (en) * | 2021-02-20 | 2023-09-26 | 三一汽车起重机械有限公司 | Crane |
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| Publication number | Publication date |
|---|---|
| CN102701085B (en) | 2014-07-16 |
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