CN103112787B - Tower crane and balance arm thereof - Google Patents
Tower crane and balance arm thereof Download PDFInfo
- Publication number
- CN103112787B CN103112787B CN201310071326.9A CN201310071326A CN103112787B CN 103112787 B CN103112787 B CN 103112787B CN 201310071326 A CN201310071326 A CN 201310071326A CN 103112787 B CN103112787 B CN 103112787B
- Authority
- CN
- China
- Prior art keywords
- balance weight
- jib
- counter
- derrick crane
- meta
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005484 gravity Effects 0.000 claims abstract description 15
- 238000010586 diagram Methods 0.000 description 5
- 238000009966 trimming Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Abstract
The invention provides a balance arm of a tower crane and the tower crane. The balance arm comprises a balance arm frame and a balance weight, the first end of the balance arm frame is connected with a rotary tower body of the tower crane, the balance weight is arranged at the second end of the balance arm frame and comprises a plurality of balance weight bodies, one part of the balance weight bodies are sequentially arranged along the extension direction of the balance arm frame from the outer side of the second end of the balance arm frame to form a middle position balance weight, and the rest balance weight bodies of the plurality of balance weight bodies are arranged on the side surface of the middle position balance weight to form a side position balance weight. According to the invention, on the premise of meeting the normal balance moment of the tower crane, the gravity center of the balance weight can be further far away from the rotation center of the rotation tower body, and under the condition of achieving the same balance weight effect, the weight of the balance weight can be effectively reduced, and the effect of light weight design is achieved.
Description
Technical field
The present invention relates to hoisting machinery field, more specifically, relate to a kind of counter-jib and derrick crane of derrick crane.
Background technology
As depicted in figs. 1 and 2, in prior art, the counter-jib of derrick crane comprises counter-jib jib 10 and balance weight 30, the first end of counter-jib jib 10 is connected with the slewing tower of derrick crane, balance weight 30 is arranged at the second end of counter-jib jib 10 and comprises the polylith balance weight body marked successively with 31 to 36, and counter-jib jib 10 is connected with the slewing tower top of derrick crane by pull bar 20.Wherein, polylith balance weight body 31 to 36 is arranged in the second end of counter-jib jib 10 successively along the bearing of trend of counter-jib jib 10, and namely each balance weight body 31 to 36 of balance weight 30 is arranged in juxtaposition.In above prior art, the center of gravity G1 of balance weight 30 is arranged in the centre position of each balance weight body 3l to 36 as shown in Figure l, and in figure l, center of gravity G1 is also positioned at the extended line of pull bar 20 and the point of intersection of counter-jib jib 10.Center of gravity G1 is A apart from the distance of the tower body centre of gyration.
There is following technical problem in the counter-jib of above prior art and derrick crane: the distance A of the centre of gyration O of the center of gravity G1 distance slewing tower of balance weight 30 is less, and counterbalance effect is bad; Balance weight 30 gross weight of derrick crane lays particular stress on, and cause tower crane lifting pressure comparatively large, economy is poor.
Summary of the invention
The object of the invention is the counter-jib and the derrick crane that provide a kind of derrick crane, is intended to solve in prior art because the arrangement of the polylith balance weight body of balance weight is that block form is arranged and the counterbalance effect of balance weight that brings is bad, balance weight gross weight lays particular stress on technical problem.
The invention provides a kind of counter-jib of derrick crane, comprise counter-jib jib and balance weight, the first end of counter-jib jib is connected with the slewing tower of derrick crane, balance weight is arranged at the second end of counter-jib jib and comprises polylith balance weight body, in polylith balance weight body, a part of balance weight body is arranged successively along the bearing of trend far from equilibrium arm jib of counter-jib jib and forms meta balance weight from the outside of the second end of counter-jib jib, and the remainder balance weight body of polylith balance weight body is arranged at the side of meta balance weight and forms position, side balance weight.
Further, position, side balance weight comprises more than two pieces balance weight body, and more than two pieces balance weight body are arranged at the both sides of meta balance weight respectively.
Further, position, side balance weight comprises even number balance weight body, and even number balance weight body is arranged at the both sides of meta balance weight symmetrically.
Further, the long side direction of the horizontal rectangular cross section of every block balance weight body of position, side balance weight is parallel to the bearing of trend of counter-jib jib.
Further, meta balance weight comprises near the first end of slewing tower and the second end away from slewing tower, and compared with the first end of meta balance weight, position, side balance weight is closer to the second end of meta balance weight.
Further, position, side balance weight comprises near the first end of slewing tower and the second end away from slewing tower, the end face of the second end of position, side balance weight concordant with the end face of the second end of meta balance weight or than the end face of the second end of meta balance weight further from slewing tower.
Further, counter-jib jib comprises position, the multiple side support extended respectively to both sides from the second side portion of counter-jib jib, and remainder balance weight body hangs on the support of position, corresponding side correspondingly.
The present invention also provides a kind of derrick crane, and comprise slewing tower and be arranged at the counter-jib on slewing tower, wherein, this counter-jib is the counter-jib of aforesaid derrick crane.
According to the counter-jib of derrick crane of the present invention, owing to changing the arrangement of polylith balance weight body, make a part of balance weight body in the polylith balance weight body of balance weight arrange successively along the bearing of trend far from equilibrium arm jib of counter-jib jib from outside counter-jib jib second end and form meta balance weight, the remainder balance weight body of polylith balance weight body is arranged at the side of meta balance weight and forms position, side balance weight.Above arrangement is under the prerequisite meeting derrick crane normal equilibrium moment, the balance weight arrangement of middle counter-jib is stated relative to existing skill, the center of gravity of balance weight can be made more away from the centre of gyration of slewing tower, when reaching identical counterbalancing effect, effectively can alleviate the weight of balance weight, reach the effect of light-weight design.The upper dress moiety by weight of whole derrick crane alleviates immediately, and the demand of tower crane lifting power also reduces, and economy improves.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Figure l is the counterweight arrangement schematic diagram of the counter-jib of the derrick crane of prior art;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is the counterweight arrangement schematic diagram of the counter-jib according to derrick crane of the present invention;
Fig. 4 is the plan structure schematic diagram of Fig. 3;
Fig. 5 is that the X of Fig. 4 is to structure for amplifying schematic diagram.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Figures 3 to 5, the derrick crane of the present embodiment comprises slewing tower, counter-jib and pull bar 20.Wherein, counter-jib comprises counter-jib jib 10 and balance weight 30, and pull bar 20 connects the slewing tower top of counter-jib jib 10 and derrick crane.
Balance weight 30 is arranged at the second end of counter-jib jib 10 and comprises the six pieces of balance weight body marked successively with 31 to 36.In other unshowned embodiment, the quantity of balance weight body can be set to other quantity according to requirement of engineering, be not limited to six pieces, and other numerical value that can realize same effect are also in protection scope of the present invention.Wherein, in six pieces of balance weight body, four pieces of balance weight body 31 to 34 are arranged successively towards the direction of far from equilibrium arm jib 10 along the bearing of trend of counter-jib jib 10 and form meta balance weight from the outside of the second end of counter-jib jib 10, and namely in balance weight 30, part balance weight body 31 to 34 is arranged in juxtaposition.And the side of meta balance weight in the prior art shown in Fig. 1 and Fig. 2, has been separately positioned in the present embodiment near two of slewing tower pieces of balance weight body 35 and 36, define position, side balance weight.
Above arrangement is under the prerequisite meeting derrick crane normal equilibrium moment, the balance weight arrangement of middle counter-jib is stated relative to existing skill, the center of gravity of balance weight can be made more away from the centre of gyration of slewing tower, when reaching identical counterbalancing effect, effectively can alleviate the weight of balance weight, reach the effect of light-weight design.In derrick crane, apply the counter-jib of the present embodiment, the upper dress moiety by weight of whole derrick crane alleviates immediately, and the demand of tower crane lifting power also reduces, and economy improves.For ease of understanding and contrast, in figs. 3 and 4, except having marked the position of the center of gravity G2 of the balance weight 30 in the present embodiment and center of gravity G2 apart from except the distance B of the tower body centre of gyration, also the center of gravity G1 of balance weight 30 in the prior art shown in Fig. 1 and Fig. 2 and center of gravity G1 is marked apart from the distance A of the tower body centre of gyration.As shown in Figure 3 and Figure 4, be compared with the prior art, balance weight 35,36 is arranged in the side of meta balance weight, like this when using the balance weight of identical weight, the center of gravity G2 of the balance weight 30 of the present embodiment is farther apart from tower body compared with the center of gravity G1 of the balance weight 30 of prior art, i.e. distance B>A.Or due to ml × A=m2 × B, and B>A, then ml>m2, wherein, ml and m2 represents the weight of the balance weight of prior art and the present embodiment respectively.So, when counter-jib length identical and use the balance weight of Different Weight, when using the arrangement of the present embodiment, use lighter balance weight can reach trimming moment same as the prior art.
In the present embodiment, counter-jib jib 10 comprises position, two sides support 11 extended respectively to both sides from the second side portion of counter-jib jib 10, and balance weight body 35 and 36 hangs on position, corresponding side support 11 correspondingly.
It should be noted that in addition, as long as arrange position, side balance weight can realize in meta balance weight side the object that the lighter balance weight of use of the present invention reaches trimming moment same as the prior art, and also unrestricted for the concrete quantity of position, side balance weight.Certainly, in order to ensure the omnibearing balance of counter-jib, preferably position, side balance weight comprises more than two pieces balance weight body, the both sides that more than two pieces balance weight body are arranged at meta balance weight are respectively large even as much as possible with the balancing weight weight reaching both sides, more preferably position, side balance weight comprises even number balance weight body, and even number balance weight body is arranged at the both sides of meta balance weight symmetrically.
Meta balance weight comprises near the first end of slewing tower and the second end away from slewing tower, and compared with the first end of meta balance weight, position, side balance weight is closer to the second end of meta balance weight.More specifically, position, side balance weight comprises near the first end of slewing tower and the second end away from slewing tower, the end face of the second end of position, side balance weight concordant with the end face of the second end of meta balance weight or than the end face of the second end of meta balance weight further from slewing tower.Arranging like this can make balance weight center of gravity as far as possible away from the centre of gyration O of slewing tower, realizes weight loss effect better.
In the present embodiment, the long side direction of the horizontal rectangular cross section of every block balance weight body of position, side balance weight is parallel to the bearing of trend of counter-jib jib 10.The moment that the moment that arranging like this can make position, the side support 11 of counter-jib jib 10 bear is less.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect: when crane arm jib length is constant, lighter balance weight is used to reach counterweight requirements, because counterweight alleviates, the upper dress moiety by weight of whole derrick crane alleviates immediately, the demand of tower crane lifting power also reduces, and economy improves.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the counter-jib of a derrick crane, comprise counter-jib jib (10) and balance weight (30), the first end of described counter-jib jib (10) is connected with the slewing tower of described derrick crane, described balance weight (30) is arranged at the second end of described counter-jib jib (10) and comprises polylith balance weight body, it is characterized in that, in described polylith balance weight body, a part of balance weight body is arranged successively along bearing of trend far from equilibrium arm jib (10) of described counter-jib jib (10) and forms meta balance weight from the outside of the second end of described counter-jib jib (10), the remainder balance weight body of described polylith balance weight body is arranged at the side of described meta balance weight and forms position, side balance weight to make the center of gravity of balance weight more away from the centre of gyration of slewing tower.
2. the counter-jib of derrick crane according to claim 1, is characterized in that, position, described side balance weight comprises more than two pieces balance weight body, and described more than two pieces balance weight body are arranged at the both sides of described meta balance weight respectively.
3. the counter-jib of derrick crane according to claim 2, is characterized in that, position, described side balance weight comprises even number balance weight body, and described even number balance weight body is arranged at the both sides of described meta balance weight symmetrically.
4. the counter-jib of derrick crane according to claim 3, is characterized in that, the long side direction of the horizontal rectangular cross section of every block balance weight body of position, described side balance weight is parallel to the bearing of trend of described counter-jib jib (10).
5. the counter-jib of derrick crane according to any one of claim 1 to 4, it is characterized in that, described meta balance weight comprises near the first end of described slewing tower and the second end away from described slewing tower, compared with the first end of described meta balance weight, position, described side balance weight is closer to the second end of described meta balance weight.
6. the counter-jib of derrick crane according to claim 5, it is characterized in that, position, described side balance weight comprises near the first end of described slewing tower and the second end away from described slewing tower, the end face of the second end of position, described side balance weight concordant with the end face of the second end of described meta balance weight or than the end face of the second end of described meta balance weight further from described slewing tower.
7. the counter-jib of derrick crane according to any one of claim 1 to 4, it is characterized in that, described counter-jib jib (10) comprises the position, multiple side support (11) extended respectively to both sides from the second side portion of described counter-jib jib (10), and described remainder balance weight body hangs on position, corresponding side support (11) correspondingly.
8. a derrick crane, comprise slewing tower and be arranged at the counter-jib on described slewing tower, it is characterized in that, described counter-jib is the counter-jib of derrick crane according to any one of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310071326.9A CN103112787B (en) | 2013-03-06 | 2013-03-06 | Tower crane and balance arm thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310071326.9A CN103112787B (en) | 2013-03-06 | 2013-03-06 | Tower crane and balance arm thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103112787A CN103112787A (en) | 2013-05-22 |
| CN103112787B true CN103112787B (en) | 2015-04-29 |
Family
ID=48411195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310071326.9A Active CN103112787B (en) | 2013-03-06 | 2013-03-06 | Tower crane and balance arm thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103112787B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395642A (en) * | 2016-11-07 | 2017-02-15 | 徐州建机工程机械有限公司 | Manufacturing method of light-weight tower crane |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922293U (en) * | 1982-08-02 | 1984-02-10 | 株式会社日立製作所 | Balance weight support device for slewing crane |
| JPH10167674A (en) * | 1996-12-06 | 1998-06-23 | Kato Works Co Ltd | Counterweight of crane truck |
| CN201071272Y (en) * | 2007-06-23 | 2008-06-11 | 徐州重型机械有限公司 | self-top type counterbalance weight installation apparatus |
| JP2012171781A (en) * | 2011-02-24 | 2012-09-10 | Tadano Ltd | Harness wiring structure for counterweight weight detection of boom type working vehicle |
| CN203112389U (en) * | 2013-03-06 | 2013-08-07 | 中联重科股份有限公司 | Tower crane and balance arm thereof |
-
2013
- 2013-03-06 CN CN201310071326.9A patent/CN103112787B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922293U (en) * | 1982-08-02 | 1984-02-10 | 株式会社日立製作所 | Balance weight support device for slewing crane |
| JPH10167674A (en) * | 1996-12-06 | 1998-06-23 | Kato Works Co Ltd | Counterweight of crane truck |
| CN201071272Y (en) * | 2007-06-23 | 2008-06-11 | 徐州重型机械有限公司 | self-top type counterbalance weight installation apparatus |
| JP2012171781A (en) * | 2011-02-24 | 2012-09-10 | Tadano Ltd | Harness wiring structure for counterweight weight detection of boom type working vehicle |
| CN203112389U (en) * | 2013-03-06 | 2013-08-07 | 中联重科股份有限公司 | Tower crane and balance arm thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103112787A (en) | 2013-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE466809T1 (en) | LATTICE MAST CRANE FOR LIFTING HEAVY LOADS | |
| CN202529708U (en) | Cradle suitable for turn-over surface of large-section steel box girder column structure | |
| CN103112787B (en) | Tower crane and balance arm thereof | |
| CN203295024U (en) | Multi-rope self-balancing hoisting device | |
| CN204265335U (en) | The hoisting crane that arm can support | |
| CN203112389U (en) | Tower crane and balance arm thereof | |
| CN205187639U (en) | Hoist device that possesses two -way leveling ability | |
| WO2007134211A3 (en) | Mobile lift crane with lift enhancing attachment | |
| CN202924633U (en) | Cargo boom pull rod and tower crane comprising same | |
| CN103213907A (en) | Tower crane | |
| CN204384697U (en) | A kind of metal plate hanging beam | |
| CN202924635U (en) | Tower crane boom and tower crane comprising same | |
| CN207645633U (en) | A kind of reversal hanger for Rectangular Tunnel combined type section of jurisdiction | |
| CN102765667B (en) | Combined arm section of crane, crane and installation method of crane | |
| CN206901580U (en) | A kind of slingcart trapeze | |
| CN205820776U (en) | Four-wheel-type corner block | |
| CN109809298A (en) | A kind of multi-use architecture tooling crane | |
| CN204265328U (en) | Telescopic hoist assembling device | |
| CN204737589U (en) | A hoist that is used for large -scale tower upright to hoist | |
| CN202671070U (en) | Combined arm section of crane and crane | |
| CN204778270U (en) | Balanced hanging beam | |
| CN204980956U (en) | Novel hoist revolving stage pedestal | |
| CN202625598U (en) | Lifting appliance for container | |
| CN202038824U (en) | Crane jib and crane with same | |
| CN207618920U (en) | A kind of movable tower crane face operation construction apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |