CN102701085B - Hoisting device and crane - Google Patents
Hoisting device and crane Download PDFInfo
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- CN102701085B CN102701085B CN201210206111.9A CN201210206111A CN102701085B CN 102701085 B CN102701085 B CN 102701085B CN 201210206111 A CN201210206111 A CN 201210206111A CN 102701085 B CN102701085 B CN 102701085B
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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, there is the full Terrain Cranes of large-tonnage, hoister in large tonnage is when lifting, its arm need to bear great load, arm is longer, be out of shape larger, by general optimization arm cross section, improve the lifting demand that the modes such as arm strength of material all cannot meet the full Terrain Cranes of large-tonnage, for this reason, at crane arm place, be provided with super lifting device at present.
As shown in Figure 1, the structural representation that Fig. 1 is a kind of typical hoisting crane.
Having surpassed 12 has and has surpassed 12, arm 11 is generally telescopic boom, by having surpassed 12, be rotatably connected on the basic arm of telescopic boom, having surpassed 12 head is connected by rope for traction with car body or the afterbody of arm 11, simultaneously, surpass 12 head and also by drag-line 13, be connected to the head of arm 11, the i.e. end of arm 11.Having surpassed 12 can lift arm 11 by 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 and 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, therefore, the pulling force that has surpassed 12 pairs of arms 11 is subject to certain restrictions, larger drag-line 13 power cannot be provided, can not allow hoisting crane overall performance obtain larger lifting.
The second, the arm 11 of the full Terrain Cranes of super-tonnage is longer, and its stressing conditions relative complex is surpassing 12 lift arm 11 head in the situation that, and arm 11 still exists the situation of unbalance stress, causes properties of product to reduce; And because brachium is longer, when having surpassed 12 pulling force and lift heavy amount and acquire a certain degree, unexpected distortion will occur arm 11, such as side sway, had a strong impact on the operating cycles of lifting quality and lifting appliance.
In view of this, how providing a kind of can lifting to surpass drag-line pulling force, and then promote the lifting appliance of lifting Whole Equipment performance, is those skilled in the art's technical matterss urgently to be resolved hurrily.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of lifting appliance, 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 described surpassed and described arm between drag-line, the head of described arm and described having surpassed are equipped with track adjusting wheel, described surpassing is fixed in one end of described drag-line, the remainder of described drag-line sequentially, around after the track adjusting wheel of described arm head, track adjusting wheel on described having surpassed, has point of connection with described arm.
Preferably, described drag-line around the track adjusting wheel on described having surpassed after, be directly fixed on described arm, fixed position is described point of connection.
Preferably, the described end having surpassed away from described arm is fixed in one end of described drag-line, and the described track adjusting wheel having surpassed is also located at described this end having surpassed.
Preferably, described drag-line around the track adjusting wheel on described having surpassed after, be directly fixed on the middle part of described arm.
Preferably, on described arm, the number of track adjusting wheel is at least two, the described track adjusting wheel number having surpassed is at least one, described drag-line according to the track adjusting wheel on described arm, the described order that has surpassed track adjusting wheel sequentially around, and be fixed on described arm or described having surpassed.
Preferably, described arm is provided with two track adjusting wheels, one track adjusting wheel is located at the head of described arm, another track adjusting wheel is located at the middle part of described arm, described surpassed only establish one described in track adjusting wheel, described drag-line around the track adjusting wheel on described having surpassed after, continue the track adjusting wheel around described arm middle part, and be fixed on described having surpassed.
Preferably, described arm comprises principal arm and auxiliary, the head that the head of described auxiliary is described arm, and described point of connection is positioned on described principal arm.
Preferably, described auxiliary is truss structure, and the head of described auxiliary is provided with support, and the track adjusting wheel of described arm head is connected on described support.
This invention provides on having surpassed of lifting appliance and arm and is equipped with track adjusting wheel, after drag-line is connected with the head of arm, can pulls back once again and be connected to arm place and with arm, not by extra rigging in the situation that, realized the increase that has surpassed drag-line multiplying power, and be at least promoted to 3 multiplying powers.Therefore, this drag-line tractive mode has realized the significantly lifting of drag-line pulling force, and arm crane capacity is improved, and hoisting crane overall performance is also promoted.In addition, arrange after track adjusting wheel, drag-line is after around each track adjusting wheel, and inevitable and arm produces the point of connection except head, be that drag-line and arm have at least two point of connection, make drag-line form discrete type arrangement structure with respect to arm, can reach discrete stressed object, 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 car body, and described lifting appliance is the lifting appliance described in above-mentioned any one.
Preferably, also comprise be connected in described arm and can rotate with respect to described arm set up arm, the suspension hook of hoisting crane is set up the head of arm described in being located at.
Because above-mentioned lifting appliance has above-mentioned technique effect, the hoisting crane with this lifting appliance also has identical technique effect.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of typical hoisting crane;
Fig. 2 is the structural representation of the first specific embodiment with the hoisting crane of lifting appliance provided by the present invention;
Fig. 3 is the structural representation of the second specific embodiment with the hoisting crane of lifting appliance provided by the present invention;
Fig. 4 is the structural representation of the third specific embodiment with the hoisting crane of lifting appliance provided by the present invention.
In Fig. 1:
11 arms, 12 surpassed, 13 drag-lines;
In 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 is to provide a kind of hoisting crane.
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.For ease of understanding and succinct description, following embodiment describes lifting appliance in connection with hoisting crane, 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 the first specific embodiment with the hoisting crane of lifting appliance provided by the present invention.
On the car body of hoisting crane, be provided with lifting appliance, lifting appliance comprises arm 21 and surpassed 22, and arm 21 is generally concertina type arm 21, and telescopic boom, has surpassed 22 and be rotatably connected on arm 21, is generally 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 have surpassed 22 and the head of arm 21, surpassed 22 and the afterbody of arm 21 or car body between also there is connection rope for traction, as shown in Figure 2.
In this embodiment, at the head of arm 21, be provided with the first track adjusting wheel 24, surpassed 22 and be provided with the second track adjusting wheel 25.One end of drag-line 23 is fixed on and has been surpassed 22, the reel of drag-line 23 can be fixed on and surpass on 22, the remainder of drag-line 23 sequentially around the first track adjusting wheel 24 of arm 21 heads, surpassed after the second track adjusting wheel 25 on 22, be directly fixed on arm 21, drag-line 23 be roughly " Z " type be arranged in surpassed 22 and arm 21 between.
Surpassed 22 and arm 21 on all arrange after track adjusting wheel, drag-line 23 can be pulled back once again and be connected to arm 21 places and with arm 21 after being connected with the head of arm 21, as can be seen from Figure 2, not by extra rigging in the situation that, realized the increase that has surpassed 22 drag-line 23 multiplying powers, the first track adjusting wheel 24 and the 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, and arm 21 crane capacities are improved, and hoisting crane overall performance is also promoted.In addition, arrange after the first track adjusting wheel 24 and the second track adjusting wheel 25, drag-line 23 is after around each track adjusting wheel, the inevitable point of connection producing except head with arm 21, drag-line 23 has at least two point of connection with arm 21, makes drag-line 23 form discrete type arrangement structure with respect to arm 21, can reach discrete stressed object, 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, due to the improvement of strained condition, also reduced the probability of arm 21 side sways when heavily loaded, thereby improved lifting quality, and extended the operating cycles of lifting appliance.
Surpassed 22 and arm 21 in lifting process, the process of meeting accompanying rotation luffing, drag-line 23 can change length and angle thereupon, servo-actuated for the ease of drag-line 23, the first track adjusting wheel 24 and the second track adjusting wheel 25 can be located at respectively rotationally to arm 21 and have been surpassed on 22, as shown in Figure 2, the first track adjusting wheel 24 and the second track adjusting wheel 25 all by pulled by cable in arm 21 and super on 22.
The second track adjusting wheel 25 can be located to the end that has surpassed 22, the end that has surpassed 22 is also fixed in one end of drag-line 23, makes drag-line 23 can bring into play to greatest extent its traction force.In view of having surpassed 22 structure, the second track adjusting wheel 25 is located to the end that has surpassed 22, be also convenient to actual arrangement.
For the various embodiments described above, drag-line 23 around the track adjusting wheel having 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 the first point of connection of arm 21, the second point of connection is positioned at arm 21 middle parts, as mentioned above, the discrete type of drag-line 23 is arranged the stressing conditions that can change arm 21, the head and the middle part that drag-line 23 and two point of connection of arm 21 are arranged in respectively to arm 21, make the stressed more even of arm 21.
Lifting appliance in above-described embodiment 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 the second specific embodiment with the hoisting crane of lifting appliance provided by the present invention.
Different from above-described embodiment is, on arm 21 in this embodiment, be provided with two track adjusting wheels, the first track adjusting wheel 24 except head, also comprise the 3rd track adjusting wheel 27, surpassed and on 22, still only established the second track adjusting wheel 25, drag-line 23 around the second track adjusting wheel 25 having surpassed on 22 after, can continue around the 3rd track adjusting wheel 27 on arm 21, and finally be fixed on and surpassed on 22.Now, 4 multiplying powers that realized drag-line 23 pulling force promote, and the 3rd track adjusting wheel 27 is the 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, the 3rd track adjusting wheel 27 can be located to the middle part of arm 21.
From the various embodiments described above, in fact, arm 21 all can arrange more than one track adjusting wheel with having surpassed on 22, one end of drag-line 23 is fixed on and has been surpassed 22, remainder can be according to first track adjusting wheel on arm 21, surpassed first track adjusting wheel on 22, second track adjusting wheel on arm 21, surpassed second track adjusting wheel on 22 ... order sequentially around, and be finally fixed on arm 21 or surpassed on 22, thereby realize 23 designs of many multiplying powers drag-line, reach the object that promotes drag-line 23 power, now, drag-line 23 also increases at least three with the point of connection of arm 21, the strained condition of arm 21 is further improved.
It should be noted that, from current actual condition, owing to having surpassed 22 specification limits, surpassed 22 and arm 21 between space still limited, drag-line 23 too much may interfere around number of times, therefore preferably adopt the discrete type arrangement in the first specific embodiment, be arm 21 and surpassed a track adjusting wheel is all set on 22, drag-line 23 is finally fixed on arm 21, this kind of set-up mode promoting on the basis of drag-line 23 pulling force, around drag-line 23 can non-interference ground tractive arm 21.
Please continue to refer to Fig. 4, Fig. 4 is the structural representation of the third specific embodiment with the hoisting crane of lifting appliance provided by the present invention.
Different from 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 car body, auxiliary 212 is connected with the head of principal arm 211, now, the head of auxiliary 212 is the head of arm 21, the first track adjusting wheel 24 is located to the head of auxiliary 212.Drag-line 23 is pulled back to arm 21 fixedly time, drag-line 23 can be directly fixed on principal arm 211, the second point of connection is positioned on principal arm 211, in Fig. 4, drag-line 23 is fixed on to the head of principal arm 211, the head of principal arm 211 is now equivalent to the middle part of whole arm 21, principal arm 211 is all connected with drag-line 23 with auxiliary 212, and tractive is more even.The cooperation of principal arm 211 and auxiliary 212 makes lifting appliance can adjust according to lifting demand the length of arm 21.
Auxiliary 212 can adopt truss structure, and truss structure is convenient to arrange support 29, support 29 can be set at the head of auxiliary 212, and the first track adjusting wheel 24 is connected on support 29, this kind of set-up mode can widen surpassed 22 and arm 21 between space, be convenient to drag-line 23 and arrange, avoid interfering.
For super-tonnage crane, except comprising the arm 21 of 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 of hoisting crane 26 is located to the head of setting up arm 28, 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 by stay cord 30 and pull bar 31, the crane capacity of the hoisting crane of this kind of structure is higher, and lifting alerting ability is also strengthened.
Above a kind of lifting appliance provided by the present invention and hoisting crane are all described in detail.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 the claims in the present invention.
Claims (6)
1. a lifting appliance, comprise arm (21) and surpass (22), and be located at the drag-line (23) between described surpassing (22) and described arm (21), it is characterized in that, the head of described arm (21) and be equipped with track adjusting wheel on described surpassing (22), described surpassing (22) is fixed in one end of described drag-line (23), the remainder of described drag-line (23) sequentially, around after the track adjusting wheel of described arm (21) head, track adjusting wheel on described surpassing (22), has point of connection with described arm (21); Described drag-line (23) around the track adjusting wheel on described surpassing (22) after, be directly fixed on the middle part of described arm (21), fixing position is described point of connection.
2. lifting appliance according to claim 1, is characterized in that, the upper end away from described arm (21) of described surpassing (22) is fixed in one end of described drag-line (23), and the described track adjusting wheel having surpassed is also located at this end of described surpassing (22).
3. lifting appliance according to claim 1 and 2, it is characterized in that, described arm (21) comprises principal arm (211) and auxiliary (212), and the head of described auxiliary (212) is the head of described arm (21), and described point of connection is positioned on described principal arm (211).
4. lifting appliance according to claim 3, is characterized in that, described auxiliary (212) is truss structure, and the head of described auxiliary (212) is provided with support (29), and the track adjusting wheel of described arm (21) head is connected on described support (29).
5. a hoisting crane, comprises car body and is located at the lifting appliance on car body, and it is characterized in that, described lifting appliance is the lifting appliance described in claim 1-4 any one.
6. hoisting crane according to claim 5, is characterized in that, also comprise be connected in described arm (21) and can rotate with respect to described arm (21) set up arm (28), the suspension hook of hoisting crane (26) is set up the head of arm (28) described in being located at.
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 |
|---|---|
| CN102701085A CN102701085A (en) | 2012-10-03 |
| CN102701085B true CN102701085B (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210206111.9A Active CN102701085B (en) | 2012-06-20 | 2012-06-20 | Hoisting device and crane |
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| Country | Link |
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| CN (1) | CN102701085B (en) |
Families Citing this family (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 |
| 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 | 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 |
| 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 |
| CN202671067U (en) * | 2012-06-20 | 2013-01-16 | 徐州重型机械有限公司 | Hoisting device and crane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5649870B2 (en) * | 2010-08-20 | 2015-01-07 | 株式会社タダノ | Mobile crane |
-
2012
- 2012-06-20 CN CN201210206111.9A patent/CN102701085B/en active Active
Patent Citations (6)
| 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 |
| 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 |
| CN202671067U (en) * | 2012-06-20 | 2013-01-16 | 徐州重型机械有限公司 | Hoisting device and crane |
Non-Patent Citations (3)
| Title |
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| JP特开2000-109288A 2000.04.18 |
| JP特开2011-195236A 2011.10.06 |
| JP特开2012-41149A 2012.03.01 |
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| CN102701085A (en) | 2012-10-03 |
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