CN202575775U - Super lifting device of engineering machinery and engineering machinery - Google Patents
Super lifting device of engineering machinery and engineering machinery Download PDFInfo
- Publication number
- CN202575775U CN202575775U CN 201220092475 CN201220092475U CN202575775U CN 202575775 U CN202575775 U CN 202575775U CN 201220092475 CN201220092475 CN 201220092475 CN 201220092475 U CN201220092475 U CN 201220092475U CN 202575775 U CN202575775 U CN 202575775U
- Authority
- CN
- China
- Prior art keywords
- tie
- arm
- jib
- lifting device
- super lifting
- 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.)
- Expired - Lifetime
Links
- 238000010276 construction Methods 0.000 claims description 32
- 239000000725 suspension Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Jib Cranes (AREA)
Abstract
The utility model discloses an engineering machine tool's super device that rises, this super device that rises is including articulating the super mast that rises at engineering machine tool's cantilever crane to and connect the overspeed device tensioner on this super mast, wherein, be provided with the supporter in the side of cantilever crane, overspeed device tensioner stacks the side at the cantilever crane and by the supporter support under fold condition, overspeed device tensioner is including articulated multisection arm-tie in proper order, and wherein the length difference of an at least section arm-tie and other arm-ties is so that the side of multisection arm-tie stacks the cantilever crane with predetermined order when folding. The utility model also discloses an use the utility model provides an engineering machine tool of having more device. Therefore, the pulling plates of different lengths can move in a predetermined trajectory under the action of gravity. When the tensioning device is folded, a plurality of pulling plates are sequentially stacked on the supporting piece on the side surface of the arm support, so that the lateral space of the engineering mechanical arm support is fully utilized.
Description
Technical field
The utility model relates to the field of components of construction machinery and equipment, particularly, and the construction machinery and equipment that relates to a kind of super lifting device of construction machinery and equipment and use this super lifting device.
Background technology
Along with developing rapidly of world economy, as hoisting crane widespread use in engineering construction of the main force of construction machinery and equipment.As everyone knows, the lifting performance of hoisting crane is one of important indicator of weighing the hoisting crane overall performance.Generally, people hope that crane arm is longer, and lifting altitude is higher; Load-carrying ability is stronger, but when the crane arm brachium was very long, crane arm was excessive with the amount of deflection of plane of rotation in the luffing plane; Amount of deflection is excessive; The arm stressing conditions is abominable during lift heavy, in the luffing plane with in the plane of rotation, produces very big additional bending moment, and load-carrying ability is reduced because of the restriction that receives crane arm amount of deflection and bearing capacity significantly.Seriously restricted the performance of crane arm lifting performance.Therefore in the prior art, increase a kind of super lifting device on the jib of hoisting crane usually, this super lifting device can improve the device of crane arm force-bearing situation, is out of shape, improves its lifting performance thereby reduce crane arm.
Super lifting device generally includes the take-up device that has surpassed mast and tension jib.Wherein, in super lifting device, take-up device is to be formed through bearing pin is hinged successively by the isometric arm-tie of more piece.Therefore, when super lifting device was in tension, take-up device can be strained jib, and when super lifting device was in folded state, take-up device also can fold, to make things convenient for the transportation of construction machinery and equipment.Yet; Because it is short and isometric to form the length of arm-tie of take-up device, in the folding process of take-up device, the order that every joint arm-tie falls comparatively at random with arbitrarily; Cause it to stack the comparatively mixed and disorderly of order, be unfavorable for optimizing and utilize construction machinery and equipment, the particularly space of jib annex.Cause to be difficult to, and the equipment of enclosing such as reasonably optimizing ground design jib cause space waste according to the path of motion of take-up device in tension and folding process.
The utility model content
A purpose of the utility model provides a kind of super lifting device of construction machinery and equipment; In the take-up device folding process of this super lifting device; Can make arm-tie carry out and sequentially overlay on the jib according to desired trajectory; Thereby can make full use of the space, and jib and other equipment of enclosing of reasonably optimizing ground design engineering machinery according to the path of motion of arm-tie.
Another purpose of the utility model provides a kind of hoisting crane, and this hoisting crane comprises the super lifting device of the construction machinery and equipment that the utility model provides.
Another purpose of the utility model provides a kind of construction machinery and equipment, and this project machinery comprises the super lifting device of the construction machinery and equipment that the utility model provides.
To achieve these goals; The utility model provides a kind of super lifting device of construction machinery and equipment; This super lifting device comprises the mast that surpassed of the jib that is hinged on said construction machinery and equipment; And be connected this and surpassed the take-up device on the mast, being provided with supporting member in the side of said jib, said take-up device overlays the side of said jib and by said supporting members support under folded state; Said take-up device comprises pivotally attached more piece arm-tie successively, and the different so that said more piece arm-tie of the length of the said arm-tie of wherein at least one joint and other said arm-ties is put into the side of said jib with predetermined order stack when folding.
Preferably, said supporting member comprises a plurality of carriages, and first end of these a plurality of carriages is arranged on the side of said jib, and second end is formed with the groove that holds said arm-tie.
Preferably, said a plurality of carriage removably is fixed on the side of said jib through support.
Preferably, but said super lifting device also comprises the locking piece of the said take-up device of release ground locking, and this locking piece is arranged on said jib side.
Preferably, said take-up device comprises that said supporting member comprises five said carriages that are arranged on the said jib side through the said arm-tie of seven joints of bearing pin pivotally attached successively, wherein,
The 7th joint arm-tie one end is hinged on the said jib, and the other end and the 6th joint arm-tie are hinged, and the 5th carriage is between the two ends of said the 7th joint arm-tie;
The 6th saves the length of the length of arm-tie less than said the 7th joint arm-tie, and corresponding with the 4th carriage, and the 4th carriage is positioned at the below of said the 5th carriage;
The 5th saves the length of the length of arm-tie greater than said the 6th joint arm-tie, and corresponding with the 3rd carriage and second carriage;
The 4th joint arm-tie is corresponding with first carriage, and this first carriage is positioned at the top of said second carriage.
The length of first segment arm-tie is less than the length of said the 6th joint arm-tie, and the second joint arm-tie is provided with through this first segment arm-tie and the 3rd joint arm-tie suspension.
Preferably, but said super lifting device comprises three locking pieces of said the 4th joint arm-tie of release ground locking and pairing three hinge-points of the 5th joint arm-tie, and these three locking pieces are arranged on the side of said jib.
According to the utility model on the other hand, a kind of construction machinery and equipment is provided also, this project machinery comprises jib and is arranged on the super lifting device on this jib, and said super lifting device is the super lifting device of the construction machinery and equipment that provides of the utility model.
Preferably, said construction machinery and equipment is a hoisting crane.
Through technique scheme, the length of length and other arm-ties that a plurality of arm-ties in the take-up device is designed at least one arm-tie according to projected path is different, and therefore, under the effect of gravity, the arm-tie of different length can move with projected path.Therefore; When take-up device was folding, a plurality of arm-ties can sequentially overlay on the supporting member of jib side, thereby have made full use of the lateral space of jib; Simultaneously; Because the path of motion of take-up device is confirmed, therefore can design other equipment of enclosing according to this path of motion reasonably optimizing ground, and then make full use of the space.
Other feature and advantage of the utility model will partly specify in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification sheets, is used to explain the utility model with the following specific embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation of super lifting device under folded state that the utility model provides;
Fig. 2 is the structural representation of super lifting device in motion process that the utility model provides;
Fig. 3 is the structural representation of super lifting device under tension that the utility model provides;
Fig. 4 is the support structure scheme drawing that the utility model provides.
Description of reference numerals
The specific embodiment
Be elaborated below in conjunction with the specific embodiment of accompanying drawing to the utility model.Should be understood that the specific embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
In the utility model; Do not doing under the situation of opposite explanation; The noun of locality that uses as " upper and lower " normally at the accompanying drawing of thinking as benchmark definition, promptly the page with accompanying drawing is as the criterion, and other nouns of locality will combine actual conditions to describe; Need these nouns of locality of explanation only to be used to explain the utility model, be not limited to the utility model.
Of the background technology part, in construction machinery and equipment, especially in hoisting crane,, design super lifting device usually with tension jib when the jib operation in order to improve lifting performance, make the Force Optimal of jib.Wherein extremely shown in Figure 3 like Fig. 1; This super lifting device comprises being hinged on and has surpassed mast 1 on the jib 4 basic arm of boom system (be generally joint); And be connected this and surpassed the take-up device 2 on the mast 1; Usually this take-up device is arranged on the end that has surpassed mast 1, and it can be that the preceding take-up device of super lifting device also can be the back take-up device, and the utility model does not limit this.
In order to overcome in the prior art, take-up device does not have fixation locus, to stack order mixed and disorderly in motion process, and can not make full use of problem such as space.In the utility model; Be provided with supporting member 3 in the side of jib 4; Take-up device 2 overlays the side of jib 4 and is supported by supporting member 3 under folded state; Take-up device 2 comprises pivotally attached more piece arm-tie 21 successively, and the different so that more piece arm-tie 21 of the length of wherein at least one joint arm-tie 21 and other arm-ties 21 is put into the side of jib 4 with predetermined order stack when folding.
In technique scheme, the length of length and other arm-ties that a plurality of arm-ties in the take-up device is designed at least one arm-tie according to projected path is different.Therefore, under the effect of gravity, the arm-tie of different length can move with projected path.Therefore; When take-up device was folding, a plurality of arm-ties can sequentially overlay on the supporting member of jib side, thereby have made full use of the lateral space of jib; Simultaneously; Because the path of motion of take-up device is confirmed, therefore can design other equipment of enclosing according to this path of motion reasonably optimizing ground, and then make full use of the space.
Particularly; Definite many-sided factor of consideration that needs of the path of motion of above-mentioned take-up device; Comprise number of arm-tie in the specification, take-up device of jib specification, super lifting device etc.; Can combine for example 3D simulation software known in those skilled in the art, various computing formula etc. to carry out optimized design then, thereby obtain the every most preferred length of arm-tie.And,, supporting member 3 is set in the side of jib according to the path of motion of take-up device and the length of every arm-tie.Wherein, Because supporting member 3 is arranged on the side of jib 4; As shown in Figure 4, can same support part 3 be set symmetrically respectively in the both sides of jib 4, surpassed pairing two take-up devices of mast with two of generally including in the corresponding super lifting device; Thereby make that the space of jib 4 both sides is farthest utilized, so that on the corresponding supporting member 3 that take-up device sequentially stacks.In addition; According to the predetermined path of movement of take-up device, can also reasonably optimizing ground near the design jib 4 the device location of enclosing, with when making full use of the space; Can not make the equipment of enclosing interfere with the tension and the folding process of take-up device, make that the practicality of the utility model is high.
Need to prove; Above-mentioned take-up device be designed with numerous embodiments, the for example number of arm-tie, length, and position of supporting member, structure or the like; The utility model is described for ease; In this introduction preferred implementation wherein, this preferred implementation only is used to explain the utility model, and need not with the restriction the utility model.
As shown in Figure 4, in the preferred implementation of the utility model, supporting member 3 can comprise a plurality of carriages 31, and first end of these a plurality of carriages 31 is arranged on the side of jib 4, and second end is formed with the groove 32 that holds arm-tie 21.More specifically, these a plurality of carriages 31 removably are fixed on the side of jib 4 through support 33.With convenient carriage is dismantled and keeped in repair.Wherein, The structure of support 33 and form have multiple; It is designed to U-shaped spare in the utility model, and wherein two end angles are fixed on the sides (can adopt welding means accomplish) of jib, and carriage 31 can removably be fixed on U-shaped spare through fastener (for example bolt etc.).In addition, those skilled in the art can carry out various modifications or replacement to the structure and the form of carriage, as long as can satisfy the purpose of the utility model, the utility model does not limit this.
In addition, owing to when take-up device is positioned at folded state, need transport construction machinery and equipment usually; In order to guarantee under the state of for example transportation, take-up device stable, preferably; To shown in Figure 3, lock the locking piece 5 of take-up device 2 but super lifting device also comprises release ground like Fig. 1, this locking piece 5 is arranged on jib 4 sides; With under the folded state of take-up device, take-up device is locked.Wherein, The form of locking piece 5 has multiple, and in the following preferred implementation of the utility model, locking piece 5 can comprise the rod member that is installed in jib 4 sides movably; The end of this rod member can lock the hinge-point between the arm-tie 21, for example can lock the bearing pin that is used to connect arm-tie 21.This lock-in techniques is conventionally known to one of skill in the art, does not do too much at this and gives unnecessary details.
For the utility model is described more easily, be example with a kind of embodiment like Fig. 1 the utility model extremely shown in Figure 3, describe in detail.
Wherein, Take-up device 2 comprises through the seven joint arm-tie a of bearing pin pivotally attached successively, b, c, d, e, f, g; Supporting member 3 comprises five carriage v, w, x, y, the z that is arranged on jib 4 sides, and particularly, the 7th joint arm-tie g one end is hinged on the jib 4; The other end and the 6th joint arm-tie f are hinged, and the 5th carriage z is between the two ends of the 7th joint arm-tie g.Wherein, the 7th joint arm-tie g is supported on the 7th joint arm-tie g on the jib 4 at the hinge-point on the jib 4 and the 5th carriage z jointly;
The 6th saves the length of the length of arm-tie f less than the 7th joint arm-tie f, and corresponding with the 4th carriage y, and the 4th carriage y is positioned at the below of the 5th carriage z; So that the 6th joint arm-tie f is supported on the side on the jib 4; Wherein, can guide the 6th joint arm-tie f the side of jib 4 into from the top of jib 4, thereby make full use of the space of jib 4 sides because the 4th carriage y is positioned at the 5th carriage z below; In addition since the thickness of jib 4 much smaller than the length of jib; Therefore, the 6th joint arm-tie f design-calculated is shorter, to adapt to the thickness of jib 4;
The 5th saves the length of the length of arm-tie e greater than the 6th joint arm-tie f, and corresponding with the 3rd carriage x and second carriage w; Because the 5th joint arm-tie e mainly arranges and longer along the length direction of jib, for the stability that guarantees that it stacks, for it is provided with two carriages, i.e. the 3rd carriage x and second carriage w.
Be hinged on the first segment arm-tie a that has surpassed on the mast 1 in order to adapt to; The top that need take-up device be drawn back once more jib 4 from the side of jib 4; Therefore, the 4th joint arm-tie d is corresponding with first carriage v and by first carriage v support, and this first carriage v is positioned at the top of second carriage w.In the design-calculated predetermined path of movement, as depicted in figs. 1 and 2, folded form takes place and turns in take-up device between the 4th joint arm-tie d and the 3rd joint arm-tie c, to realize take-up device is overlayed the side of jib.Wherein, the length of first segment arm-tie a is less than the length of the 6th joint arm-tie f, and the second joint arm-tie b is provided with through this first segment arm-tie a and the 3rd joint arm-tie c suspension.Because the length of first segment arm-tie a saves the length of arm-tie f less than the 6th, thereby realize that the second joint arm-tie b can hang setting, and do not contact with the arm-tie of below.
In addition, as shown in Figure 1, when take-up device is in folded state; Stable in order to guarantee seven joint arm-ties, preferably, can just be positioned at the 4th joint arm-tie d and the 5th joint arm-tie e locking of below; Therefore; The locking piece 5 that super lifting device comprises is three, but this three locking pieces, 51,52,53 releases ground locking the 4th joint arm-tie d and the 5th saves pairing three the hinge-point o of arm-tie e, p, q, thereby can whole take-up device be locked on the side of jib 4.
In above-mentioned embodiment; Seven joint arm-ties of take-up device can erection plan 1 to the path of motion that Fig. 3 showed fold and strain; Through design this fixing path of motion for take-up device; Can make full use of the space of jib both sides, and for example mailbox, amplitude oil cylinder or the like are reasonable in design to make near the jib other devices of enclosing, and the mutual interference with take-up device does not take place.In addition; Except above-mentioned advantage, compare the isometric and short arm-tie mode of using in the prior art, the utility model can be accomplished the assembling of take-up device through the arm-tie of less joint number; Save the quantity of accessories such as bearing pin greatly, alleviated the weight of take-up device.Make that the practicality of super lifting device is stronger.Therefore, hoisting crane that the utility model provides and construction machinery and equipment, because it is the super lifting device that has used the utility model to provide can effectively improve its jib space availability ratio on every side, practical.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But the utility model is not limited to the detail in the above-mentioned embodiment, in the technical conceive scope of the utility model; Those skilled in the art can be according to the number of arm-tie, the factors such as specification of jib; Above-mentioned embodiment is carried out various modifications or replacement, the for example number of supporting member, position or the like, these modifications and replacement all belong to the protection domain of the utility model.
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 utility model 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 utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (8)
1. the super lifting device of a construction machinery and equipment; What this super lifting device comprised the jib (4) that is hinged on said construction machinery and equipment has surpassed mast (1); And be connected this and surpassed the take-up device (2) on the mast (1); It is characterized in that; Be provided with supporting member (3) in the side of said jib (4); Said take-up device (2) under folded state, overlays the side of said jib (4) and by said supporting member (3) supporting, said take-up device (2) comprises pivotally attached more piece arm-tie (21) successively, and the different so that said more piece arm-tie (21) of the length of the said arm-tie of wherein at least one joint (21) and other said arm-ties (21) is put into the side of said jib (4) with the order stack of being scheduled to when folding.
2. the super lifting device of construction machinery and equipment according to claim 1; It is characterized in that; Said supporting member (3) comprises a plurality of carriages (31), and first end of these a plurality of carriages (31) is arranged on the side of said jib (4), and second end is formed with the groove (32) that holds said arm-tie (21).
3. the super lifting device of construction machinery and equipment according to claim 2 is characterized in that, said a plurality of carriages (31) removably are fixed on the side of said jib (4) through support (33).
4. the super lifting device of construction machinery and equipment according to claim 1 is characterized in that, but said super lifting device also comprises the locking piece (5) of the release ground said take-up device of locking (2), and this locking piece (5) is arranged on said jib (4) side.
5. the super lifting device of construction machinery and equipment according to claim 2; It is characterized in that; Said take-up device (2) comprises through the seven joint said arm-ties (a, b, c, d, e, f, g) of bearing pin pivotally attached successively; Said supporting member (3) comprises five the said carriages (v, w, x, y, z) that are arranged on said jib (4) side, wherein
The 7th joint arm-tie (g) end is hinged on the said jib (4), and the other end and the 6th joint arm-tie (f) are hinged, and the 5th carriage (z) is positioned between the two ends of said the 7th joint arm-tie (g);
The 6th saves the length of the length of arm-tie (f) less than said the 7th joint arm-tie (f), and corresponding with the 4th carriage (y), and the 4th carriage (y) is positioned at the below of said the 5th carriage (z);
The 5th saves the length of the length of arm-tie (e) greater than said the 6th joint arm-tie (f), and corresponding with the 3rd carriage (x) and second carriage (w);
The 4th joint arm-tie (d) is (v) corresponding, and this first carriage (v) is positioned at the top of said second carriage (w) with first carriage.
The length of first segment arm-tie (a) is less than the length of said the 6th joint arm-tie (f), and the second joint arm-tie (b) is provided with through this first segment arm-tie (a) and the 3rd joint arm-tie (c) suspension.
6. the super lifting device of construction machinery and equipment according to claim 5; It is characterized in that; But said super lifting device comprises three locking pieces (51,52,53) of said the 4th joint arm-tie (d) of release ground locking and the 5th joint arm-tie (e) pairing three hinge-points (o, p, q), and these three locking pieces are arranged on the side of said jib (4).
7. construction machinery and equipment, this project machinery comprises jib (4) and is arranged on the super lifting device on this jib (4) that it is characterized in that, said super lifting device is the super lifting device of any described construction machinery and equipment among the claim 1-6.
8. construction machinery and equipment according to claim 7 is characterized in that, said construction machinery and equipment is a hoisting crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220092475 CN202575775U (en) | 2012-03-13 | 2012-03-13 | Super lifting device of engineering machinery and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220092475 CN202575775U (en) | 2012-03-13 | 2012-03-13 | Super lifting device of engineering machinery and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202575775U true CN202575775U (en) | 2012-12-05 |
Family
ID=47245211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220092475 Expired - Lifetime CN202575775U (en) | 2012-03-13 | 2012-03-13 | Super lifting device of engineering machinery and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202575775U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328490A (en) * | 2017-01-17 | 2018-07-27 | 利勃海尔工厂埃英根有限公司 | Crane boom, the crane containing the crane arm and setting-up support arm installation method |
-
2012
- 2012-03-13 CN CN 201220092475 patent/CN202575775U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328490A (en) * | 2017-01-17 | 2018-07-27 | 利勃海尔工厂埃英根有限公司 | Crane boom, the crane containing the crane arm and setting-up support arm installation method |
| JP2018127360A (en) * | 2017-01-17 | 2018-08-16 | リープヘル−ヴェルク エーインゲン ゲーエムベーハーＬｉｅｂｈｅｒｒ−Ｗｅｒｋ ＥｈｉｎｇｅｎＧｍｂＨ | Crane boom, crane with the crane boom, and method for mounting guy support on crane boom |
| JP7015696B2 (en) | 2017-01-17 | 2022-02-03 | リープヘル－ヴェルク エーインゲン ゲーエムベーハー | How to attach a crane boom, a crane equipped with the crane boom, and a guy support to the crane boom |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105705453A (en) | Crane boom segment for assembling a crane boom and method for assembling a crane boom | |
| WO2012055255A1 (en) | Hoisting mechanism for container crane and container crane | |
| WO2016173238A1 (en) | Floating crane and multifunctional suspension hook and multifunctional suspension hook group thereof | |
| CN202099008U (en) | Folding crane | |
| CN108818502A (en) | The parallel institution of a two mobile rotations with spherical rotation freedom degree | |
| CN202575775U (en) | Super lifting device of engineering machinery and engineering machinery | |
| RU182551U1 (en) | CRANE ARRANGEMENT SUPPRESSION DEVICE FOR CRANE ARROWS | |
| CN102674169A (en) | Truss arm frame, folding method thereof and crane | |
| CN103663190A (en) | Cantilever crane and crane | |
| CN202296915U (en) | Crane, super-lifting device and pre-tightening mechanism of super-lifting device | |
| CN203667798U (en) | Light-weight high-strength cross beam lifting appliance | |
| CN104595125A (en) | Six-dimensional installation device for offshore wind generating set | |
| CN202063653U (en) | Crane and arm support of same | |
| CN102774761A (en) | Arm section of truss arm, truss arm and crane | |
| CN202880720U (en) | Super-lifting mast, super-lifting device and lifting equipment comprising super-lifting device | |
| CN203428804U (en) | Super-lift device and super-lift landing leg | |
| CN105398969A (en) | Gantry crane | |
| CN103641000A (en) | Crane and super-lifting device thereof | |
| CN203715125U (en) | Crane as well as guying device thereof | |
| CN207245128U (en) | A kind of skyscraper steel pipe scaffold | |
| CN202322106U (en) | Crane with a movable crane | |
| CN202924635U (en) | Tower crane boom and tower crane comprising same | |
| CN109761154A (en) | Crane | |
| CN202718396U (en) | Arm support connecting rod mechanism, distributing rod mechanism and concrete pumping equipment | |
| CN204675688U (en) | A kind of telescoping mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |
|
| CX01 | Expiry of patent term |