CN102267670B - Connecting frame, boom system with connecting frame, and lifting appliance - Google Patents
Connecting frame, boom system with connecting frame, and lifting appliance Download PDFInfo
- Publication number
- CN102267670B CN102267670B CN 201110215817 CN201110215817A CN102267670B CN 102267670 B CN102267670 B CN 102267670B CN 201110215817 CN201110215817 CN 201110215817 CN 201110215817 A CN201110215817 A CN 201110215817A CN 102267670 B CN102267670 B CN 102267670B
- Authority
- CN
- China
- Prior art keywords
- arm
- tie
- extension
- support
- hinged
- 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
Images
Abstract
The invention discloses a connecting frame, which is used for connecting some extension node of a truss boom and a super-lift device. The connecting frame comprises two components, and the two components are symmetrical about the centre line of the extension node; each component comprises a support, a front pulling plate and a rear pulling plate, wherein the tail end of the support is respectively hinged with the upper surface and side face of the extension node, one end of the front pulling plate is hinged with the head end of the support, and the other end of the front pulling plate is connected with the front end of the extension node, one end of the rear pulling plate is hinged with the head end of the support, and the other end of the rear pulling plate is connected with the super-lift device; and the super-lift device is used for improving the stability and lifting performance of a boom system. The connecting frame provided by the invention is matched with the super-lift device so as to form a hyperstatic structure which can transmit the action of the super-lift device to the truss boom, so that the stability of the truss boom along the whole boom length direction is greatly enhanced, thereby improving the stability and lifting performance of the boom system under the premise of ensuring the length of the truss boom. The invention also discloses a boom system with the connecting frame and a lifting appliance.
Description
Technical field
The present invention relates to the crane facility technical field, relate more specifically to a kind of link span for truss frame for connecting arm and super lifting device and have boom system and the elevator machinery of this link span.
Background technology
In recent years, along with developing rapidly of economic construction, China's capital construction dynamics strengthens just gradually, and the Infrastructure scales such as arteries of communication, airport, harbour, water conservancy and hydropower, urban construction are also increasing, and the demand of market elevator machinery also increases thereupon.Elevator machinery is the machinery that goods is carried out lifting, loading and unloading and installation exercise, can finish the carrying work that can't finish by manpower, to alleviate people's manual labor, raises labour productivity.In many important departments, it is not only the accessory machinery in the production process, and has become indispensable important machinery on the production-lines, and its development plays positive impetus to the construction of national economy.Along with production-scale expanding day, particularly modernization, specialized Production requirement, the elevator machinery industry is constantly towards large-tonnage development, to adapt to the demand of various operating modes.
The important load bearing component of elevator machinery is the boom system that it is used for cargo lifting, and this system mainly comprises: principal arm, truss arm and super lifting device.Truss arm is mounted in the principal arm end, increases a kind of version of lifting brachium and lifting altitude, mainly is comprised of tubing, comprises auxiliary and variable-amplitude auxiliary arm; Super lifting device is a kind of crane arm auxiliary device, is comprised of two identical subassemblies, is installed on the principal arm, opens to the both sides during use, can improve the stability of boom system.Along with the elevator machinery industry constantly develops to large-tonnage, in order to satisfy working condition requirement, the brachium of truss arm is also in continuous increase, the maximum brachium of truss arm has reached 114 meters at present, under brachium like this, may produce very large amount of deflection during traditional truss arm form lift heavy, in this case boom system can produce to a certain degree carry the distortion on non-lift heavy plane that causes by side, be the side sway phenomenon, consequent additional bending moment has very large losing to the in-use performance of boom system.
Therefore, how existing boom system is improved, thereby under the prerequisite that guarantees brachium, improve the stability of boom system and the performance that hoists, become the problem that those skilled in the art need solution badly.
Summary of the invention
Main purpose of the present invention is to provide a kind of link span, and this link span can under the prerequisite that guarantees brachium, improve the stability of boom system and the performance that hoists.Another object of the present invention is to provide a kind of boom system and elevator machinery with this link span.
For realizing above-mentioned first purpose, the invention provides a kind of link span, the extension and the super lifting device that are used for the truss frame for connecting arm, comprise and be symmetrical in the two pack support assemblies that the extension line of centers distributes, every pack support assembly comprises: support, preposition arm-tie and rearmounted arm-tie, the tail end of described support is hinged with upper surface and the side of extension respectively, described preposition arm-tie one end is articulated in the head end of described support, the other end is used for being connected with described extension front end, one end of described rearmounted arm-tie is articulated in the head end of described support, and the other end is used for being connected with described super lifting device.
Preferably, described support is made of two cylindrical shells, the head end of the described support of the hinged formation of an end of two cylindrical shells, and the other end of two cylindrical shells consists of the tail end of described support, cylindrical shell one is hinged on the upper surface of described extension, and cylindrical shell two is hinged on the side of extension.
Preferably, be connected with floor between described cylindrical shell one and the described cylindrical shell two.
Preferably, also include joint, described joint by head, afterbody and be connected to head and afterbody between bearing consist of, described head and described rearmounted arm-tie are hinged by the hole that is positioned at described head, the head end of described afterbody and described support is hinged by the hole that is positioned at afterbody.
Preferably, described preposition arm-tie is made of the arm-tie one that is hinged and arm-tie two, and the other end of described arm-tie one and the head end of described support are hinged, and the other end of described arm-tie two is used for hinged with the front end of described extension.
Preferably, described support is provided with in order to fix the draw-in groove one of described joint near the position of head end, is provided with the draw-in groove two in order to fixing rearmounted arm-tie on the floor of described support.
With respect to prior art, technique effect of the present invention is:
This link span provided by the invention, the extension and the super lifting device that are used for the truss frame for connecting arm, comprise and be symmetrical in the two pack support assemblies that the extension line of centers distributes, every pack support assembly comprises: support, preposition arm-tie and rearmounted arm-tie, the tail end of support is hinged with upper surface and the side of extension respectively, and an end of preposition arm-tie is articulated in the head end of support, and the other end is connected with the front end of extension, one end of rearmounted arm-tie is articulated in the head end of support, and the other end is connected with super lifting device.
Under off working state, link span is packed up to the extension direction, crouches down on extension, and outer formation casing is convenient to storage and transportation; Under the mode of operation, can be installed on flexibly according to different lift heavy operating modes the diverse location of truss arm, at first, rearmounted arm-tie is subject to the upwards traction of super lifting device, drive support and open to both sides, and then drive the diastole of preposition arm-tie, thereby realized that extension is connected connection with super lifting device.
The effect of super lifting device is to improve crane arm support Systems balanth and the performance that hoists, and this link span provided by the invention cooperates with super lifting device and can form a hyperstatic structure, during work, this structure can be delivered to the effect of super lifting device on the truss arm, when overcoming the lift heavy amount of deflection, avoided the distortion of boom system on non-lift heavy plane, so that the stability on the whole brachium direction improves greatly, thereby under the prerequisite that guarantees brachium, the stability of boom system and the performance that hoists have been improved.
The present invention also provides a kind of boom system, comprises principal arm, is connected to the truss arm of principal arm front end and is arranged on super lifting device on the principal arm, also comprises above-mentioned link span.
Preferably, the main chord of described extension is formed by front side thick-walled pipe and the docking of rear side thin-walled tube.
Preferably, be provided with connector bushing in the described thick-walled pipe of joint and the thin-walled tube, the outside dimension of described connector bushing is identical with the internal diameter size of set thick-walled pipe and thin-walled tube respectively, and the three is welded and fixed.
Preferably, be symmetrically arranged with in order to the draw-in groove three of fixing rearmounted arm-tie with in order to the arm-tie one of fixing preposition arm-tie and the draw-in groove four of arm-tie two hinged places on two of described extension upper surface main chords.
The present invention also provides a kind of elevator machinery, comprises car body and boom system, and described boom system is above-mentioned boom system.
Because above-mentioned link span has above-mentioned technique effect, boom system and elevator machinery with this link span also should possess corresponding technique effect.
In sum, this link span provided by the invention can improve existing boom system effectively, can under the prerequisite that guarantees brachium, improve the stability of boom system and the performance that hoists.
Description of drawings
Fig. 1 is the structural representation of link span provided by the present invention;
Fig. 2 is the structural representation that link span provided by the present invention is installed on truss arm;
Fig. 3 is the enlarged drawing of the joint A of link span among Fig. 1;
Fig. 4 is the structural representation of a pack support assembly of link span provided by the present invention;
Fig. 5 is the scheme drawing of the link span of two pack support assemblies among employing Fig. 4 under the off working state;
Fig. 6 is the structural representation of the B position main chord docking of link span among Fig. 1.
Fig. 7 is the enlarged drawing at link span C position under the off working state among Fig. 5;
Fig. 8 is the enlarged drawing at link span D position under the off working state among Fig. 5;
The specific embodiment
Core of the present invention is to provide a kind of link span, and this link span can improve existing boom system effectively, can under the prerequisite that guarantees brachium, improve the stability of boom system and the performance that hoists.
In order to make those skilled in the art understand better technical scheme of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 2, Fig. 1 are the structural representation of link span provided by the present invention, and Fig. 2 is the structural representation that link span provided by the present invention is installed on truss arm.
As shown in Figure 1, this link span 22 provided by the invention, the extension 11 and the super lifting device 21 that are used for truss frame for connecting arm 23, this link span 22 comprises the two pack support assemblies that are symmetrical in the distribution of extension 11 line of centerss, every pack support assembly comprises: support 12, preposition arm-tie 13 and rearmounted arm-tie 14, the tail end of support 12 is hinged with upper surface and the side of extension 11 respectively, preposition arm-tie 13 1 ends are articulated in the head end of support 12, the other end is connected with the front end of extension 11, one end of rearmounted arm-tie 14 is articulated in the head end of support 12, and the other end is connected with super lifting device 21.
Under off working state, link span is packed up to the extension direction, crouches down on extension, during lift heavy, rearmounted arm-tie is subject to the upwards traction of super lifting device, drives support and opens to both sides, and then drive the diastole of preposition arm-tie, thereby realized that extension is connected connection with super lifting device.
As can be known, the effect of super lifting device 21 is to improve crane arm support Systems balanth and the performance that hoists, and this link span 22 provided by the present invention cooperates with super lifting device 21 and can form a hyperstatic structure, during work, this structure can be delivered to the effect of super lifting device 21 on the truss arm 23, when overcoming the lift heavy amount of deflection, avoided the distortion of boom system on non-lift heavy plane, so that the stability on the whole brachium direction improves greatly, thereby under the prerequisite that guarantees brachium, the stability of boom system and the performance that hoists have been improved.
Particularly, described support 12 is made of two cylindrical shells, one end captive joint of two cylindrical shells consists of the head end of described support 12, the other end of two cylindrical shells consists of the tail end of described support 12, wherein, cylindrical shell 1 is hinged on the upper surface of described extension 11, and cylindrical shell 2 122 is hinged on the side of extension 11, be connected with floor 123 between described cylindrical shell 1 and the described cylindrical shell 2 122, its role is to strengthen the steadiness of support 12.
Apparently, this link span 22 provided by the present invention, reasonable in design, easy for installation, being mainly reflected in can be according to the needs of operating mode, be installed on neatly on the diverse location of truss arm 23, be not subjected to the restriction of brachium, as shown in Figure 2, this link span 22 is used with super lifting device 21, the hyperstatic structure that consists of will greatly reduce the amount of deflection of boom system, eliminate very most additional bending moment, thereby greatly promote the stability of whole boom system and the performance that hoists.
Please refer to Fig. 3, Fig. 3 is the enlarged drawing of the joint A of link span among Fig. 1.
As can be known, rearmounted arm-tie 14 is hinged by the head end of joint A and described support 12.Particularly, as shown in Figure 3, joint A by head 31, afterbody 32 and be connected to head 31 and afterbody 32 between bearing 33 consist of, head 31 is hinged by the hole 1 that is positioned at head 31 with rearmounted arm-tie 14, afterbody 32 is hinged by the hole 2 321 that is positioned at afterbody 32 with the head end of support 12.
Because joint A inside is provided with bearing 33, then the head 31 of joint A and afterbody 32 can be with respect to coaxial rotation, can guarantee that so rearmounted arm-tie 14 has certain space of reversing, effectively offset the twisting resistance that the angle of rearmounted arm-tie 14 and super lifting device 21 angles produce when inconsistent.Be that arranging of bearing 33 structures eliminated the possibility that produces assembly stress, guaranteed that 14 of rearmounted arm-ties bear unidirectional pulling force, have improved reasonableness and the safety of self structure.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of a pack support assembly of link span provided by the present invention, and Fig. 5 is the scheme drawing of the link span of two pack support assemblies among employing Fig. 4 under the off working state.
As shown in Figure 4 and Figure 5, preposition arm-tie 13 is by arm-tie 1 and arm-tie 2 132 hinged forming.Arm-tie 1 and arm-tie 2 132 just can be folding to the centre by hinge under action of gravitation when off working state like this, and drive support 12 is packed up to a side of extension 11, rearmounted arm-tie 14 of while is also followed support 12 and is together packed up, pack up rear integral structure and be casing, be convenient to receive dress and transportation.
In addition, be provided with draw-in groove one a in order to permanent joint A at support 12 near the position of head ends, be provided with draw-in groove two b in order to fixing rearmounted arm-tie on the floor 123 of support 12.After link span was packed up, joint A was built in groove one a, and plugs bearing pin and fix, similarly, rearmounted arm-tie 14 is built in groove two b, and plugs bearing pin and fix, effectively guaranteed packing up fully of link span, the situation of having avoided link span under abnormal condition, to open.
Significantly, support 12 can be designed to pipe structure, to improve the degree of utilization of material; The composing quantity of preposition arm-tie 13 can correspondingly increase or reduce according to the variation of extension 11 length; The layout of the web member of extension 11 can be adjusted according to product and stressing conditions.
The present invention also provides a kind of boom system, comprise principal arm, be connected to the truss arm 23 of principal arm front end and be arranged on super lifting device 21 on the principal arm, its truss arm 23 is connected with super lifting device and is adopted above-mentioned link span 22 to connect, because above-mentioned link span 22 has above-mentioned technique effect, adopts the boom system of this link span 22 also should possess corresponding technique effect.In addition, described boom system also has some other technologies effects.
Please refer to Fig. 6, Fig. 7 and Fig. 8, Fig. 6 is the structural representation of the B position main chord docking of link span among Fig. 1, and Fig. 7 is the enlarged drawing at C position among Fig. 5, and Fig. 8 is the enlarged drawing at D position among Fig. 5.
Known, an end of preposition arm-tie 13 is articulated in the head end of support 12, and the other end is connected with the front end of extension 11.During lift heavy, the front end of extension 11 is subject to the very large application force of preposition arm-tie 13, therefore need the thickening tube wall to increase the ability to bear of this extension 11, the later half end of extension 11 then is not subject to very large exerting oneself, the intensity of common light wall pipe just can meet the demands, if look after the front end of extension 11 can the waste material with the unified thickening of main chord of extension 11.As shown in Figure 6, this link span 22 provided by the present invention, the main chord of extension 11 is formed by the thick-walled pipe 61 of front end and thin-walled tube 62 docking of rear end, has so namely satisfied the stressed larger requirement of front end of extension 11, can not waste material again, effectively improve the degree of utilization of material.
In the work, the front end of extension 11 is subject to the very large application force of preposition arm-tie 13, if the intensity of thick-walled pipe 61 and thin-walled tube 62 joints is not enough to overcome large like this application force, can cause that main chord is in the fracture of junction, therefore, the thick-walled pipe 61 of the main chord of this boom system provided by the invention and the inboard of thin-walled tube 62 are provided with connector bushing 63, the outside dimension of this connector bushing 63 matches with the internal diameter size of thick-walled pipe 61 and thin-walled tube 62 respectively, and the three adopts welding manner to fix, the existence of this built-in sleeve pipe 63, so that the intensity of main chord joint improves greatly, effectively overcome the application force of preposition arm-tie 13.
Further, be symmetrically arranged with on two main chords of extension 11 upper surfaces in order to draw-in groove three c of fixing rearmounted arm-tie 14 with in order to the arm-tie 1 of fixing preposition arm-tie 13 and draw-in groove four d of arm-tie 2 132 hinged places, after link span is packed up, described rearmounted arm-tie 14 is built in draw-in groove three c, and plug bearing pin and fix, similarly, the hinged place of arm-tie 1 and arm-tie 2 132 is built in draw-in groove four d, and plug bearing pin and fix, effectively guaranteed packing up fully of link span, the situation of having avoided link span under abnormal condition, to open.
The present invention also provides a kind of elevator machinery, comprises car body and boom system.The foregoing boom system of boom system wherein.Because above-mentioned boom system has above-mentioned technique effect, the elevator machinery with this boom system also should possess corresponding technique effect, no longer is described in detail at this.
More than a kind of link span provided by the present invention and boom system and elevator machinery with this link span are described in detail.Used specific case herein 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 (11)
1. link span, the extension and the super lifting device that are used for the truss frame for connecting arm, it is characterized in that, comprise and be symmetrical in the two pack support assemblies that the extension line of centers distributes, every pack support assembly comprises: support, preposition arm-tie and rearmounted arm-tie, the tail end of described support is hinged with upper surface and the side of extension respectively, described preposition arm-tie one end is articulated in the head end of described support, the other end is used for being connected with described extension front end, one end of described rearmounted arm-tie is articulated in the head end of described support, and the other end is used for being connected with described super lifting device.
2. link span according to claim 1, it is characterized in that, described support is made of two cylindrical shells, one end captive joint of two cylindrical shells consists of the head end of described support, the other end of two cylindrical shells consists of the tail end of described support, wherein, cylindrical shell one is hinged on the upper surface of described extension, and cylindrical shell two is hinged on the side of extension.
3. link span according to claim 2 is characterized in that, is connected with floor between described cylindrical shell one and the described cylindrical shell two.
4. each described link span according to claim 1-3, it is characterized in that, also include joint, described joint by head, afterbody and be connected to head and afterbody between bearing consist of, described head and described rearmounted arm-tie are hinged by the hole that is positioned at described head, and the head end of described afterbody and described support is hinged by the hole that is positioned at afterbody.
5. link span according to claim 4, it is characterized in that, described preposition arm-tie is made of the arm-tie one that is hinged and arm-tie two, and the other end of described arm-tie one and the head end of described support are hinged, and the other end of described arm-tie two is used for hinged with the front end of described extension.
6. link span according to claim 5 is characterized in that, described support is provided with in order to fix the draw-in groove one of described joint near the position of head end, is provided with the draw-in groove two in order to fixing rearmounted arm-tie on the floor of described support.
7. boom system comprises principal arm, is connected to the truss arm with extension of principal arm front end and is arranged on super lifting device on the principal arm, it is characterized in that, also comprises each described link span of claim 1-6.
8. boom system according to claim 7 is characterized in that, the main chord of described extension is formed by the thick-walled pipe of front side and the thin-walled tube docking of rear side.
9. boom system according to claim 8, it is characterized in that, be provided with connector bushing in the described thick-walled pipe of joint and the described thin-walled tube, the outside dimension of described connector bushing is identical with the internal diameter size of described thick-walled pipe and described thin-walled tube respectively, and the three is welded and fixed.
10. each described boom system according to claim 7-9, it is characterized in that, be symmetrically arranged with on two main chords of described extension upper surface in order to the draw-in groove three of fixing rearmounted arm-tie with in order to the arm-tie one of fixing preposition arm-tie and the draw-in groove four of arm-tie two hinged places.
11. an elevator machinery comprises car body and boom system, it is characterized in that, described boom system is boom system claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110215817 CN102267670B (en) | 2011-07-29 | 2011-07-29 | Connecting frame, boom system with connecting frame, and lifting appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110215817 CN102267670B (en) | 2011-07-29 | 2011-07-29 | Connecting frame, boom system with connecting frame, and lifting appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102267670A CN102267670A (en) | 2011-12-07 |
| CN102267670B true CN102267670B (en) | 2013-03-20 |
Family
ID=45050156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110215817 Active CN102267670B (en) | 2011-07-29 | 2011-07-29 | Connecting frame, boom system with connecting frame, and lifting appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102267670B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491194B (en) * | 2011-11-16 | 2013-07-10 | 中联重科股份有限公司 | Crane super-lifting device and all-terrain crane with the crane super-lifting device |
| CN102491193B (en) * | 2011-11-16 | 2013-06-12 | 中联重科股份有限公司 | Crane super-lifting device and all-terrain crane with the crane super-lifting device |
| CN102602822B (en) * | 2012-03-26 | 2014-05-21 | 三一汽车起重机械有限公司 | Crane superlift connection bracket and crane |
| CN102659037B (en) * | 2012-05-17 | 2014-01-01 | 中联重科股份有限公司 | Superlift device for crane and telescopic boom crane |
| CN103407910B (en) * | 2013-08-23 | 2015-06-17 | 徐州重型机械有限公司 | Crane and boom system thereof |
| DE202014004888U1 (en) * | 2014-06-16 | 2014-07-31 | Liebherr-Werk Ehingen Gmbh | Lattice piece for a lattice boom, lattice boom and crane |
| CN104444854A (en) * | 2014-09-26 | 2015-03-25 | 徐州重型机械有限公司 | Superlift inhaul cable connecting device and hoisting equipment |
| CN105565191B (en) * | 2015-11-24 | 2017-11-24 | 徐州重型机械有限公司 | Super lifting device and crane gear |
| CN106429905A (en) * | 2016-10-20 | 2017-02-22 | 太原重型机械集团工程技术研发有限公司 | Crane and superlift device thereof |
| CN107140557B (en) * | 2017-06-12 | 2021-08-13 | 徐州重型机械有限公司 | Special arm support structure for wind power and crane |
| CN107473107B (en) * | 2017-10-01 | 2018-09-18 | 德州职业技术学院 | A kind of super lifting device of engineering machinery |
| CN113979336B (en) * | 2021-10-29 | 2024-04-09 | 徐州重型机械有限公司 | Auxiliary arm structure of crane and crane |
| CN114132851B (en) * | 2021-11-23 | 2022-10-28 | 徐工集团工程机械股份有限公司建设机械分公司 | Crane boom structure and crawler crane |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6012591U (en) * | 1983-07-04 | 1985-01-28 | 日立建機株式会社 | Mobile crane A frame |
| DE19802187C2 (en) * | 1998-01-16 | 1999-11-25 | Mannesmann Ag | Device for bracing a superlift device of a telescopic crane |
| JP2002167172A (en) * | 2000-12-04 | 2002-06-11 | Nippon Sharyo Seizo Kaisha Ltd | Crawler crane |
| DE10129022B4 (en) * | 2001-06-13 | 2005-07-28 | Terex-Demag Gmbh & Co. Kg | Telescopic crane with superlift device |
| DE602004027224D1 (en) * | 2003-04-02 | 2010-07-01 | Terex Demag Gmbh | SECONDARY MAIN EXHIBITOR FOR A LADDER MAST CRANE AND METHOD FOR ORIENTING THEREOF |
| DE102007051539C5 (en) * | 2007-10-29 | 2018-04-12 | Liebherr-Werk Ehingen Gmbh | Method for erecting a crane jib |
| CN201473227U (en) * | 2009-05-26 | 2010-05-19 | 徐州重型机械有限公司 | Side crane arm for a crane |
| CN101659378A (en) * | 2009-08-27 | 2010-03-03 | 三一汽车制造有限公司 | Lift and superlift device thereof |
| CN202265344U (en) * | 2011-07-29 | 2012-06-06 | 徐州重型机械有限公司 | Connection frame as well as boom system with same and hoisting machinery |
-
2011
- 2011-07-29 CN CN 201110215817 patent/CN102267670B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102267670A (en) | 2011-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102267670B (en) | Connecting frame, boom system with connecting frame, and lifting appliance | |
| CN202265344U (en) | Connection frame as well as boom system with same and hoisting machinery | |
| CN106395645B (en) | Wind-powered electricity generation arm method for turning and crane | |
| CN105110213A (en) | Crane provided with counterweight balance mechanism adopting dead weight of hoisted object as well as crane transformation scheme | |
| CN103466472A (en) | Auxiliary arm system and crawler crane | |
| CN103496641B (en) | A kind of turntable structure and there is the hoisting crane of this turntable structure | |
| CN105060142A (en) | Integrally mounted and transported luffing fly jib of crawler crane | |
| CN107140557B (en) | Special arm support structure for wind power and crane | |
| CN101830404A (en) | Special boom head device of crawler crane for wind generating set | |
| CN101357743B (en) | Crane hook magnification-changing mechanism of movable arm variation-amplitude crane | |
| CN204211393U (en) | A kind of wind-powered electricity generation lifts special arm head | |
| CN204434123U (en) | Tower body in tower crane resistance to deformation | |
| CN103422439A (en) | Lower guide beam bridge girder erection machine and method for complete machine passing through tunnel | |
| CN201933413U (en) | Highly efficient variable-span transporting type lower guide girder machine | |
| CN204324760U (en) | A kind of independent arm head and hoisting crane | |
| CN203529805U (en) | Belly-mounted type auxiliary boom structure and crane | |
| CN202704845U (en) | Special overturning support for hoisting and overturning large-size memorial gateway | |
| CN202090612U (en) | Concrete distributing arm support and concrete pump truck | |
| CN201901544U (en) | Crane and box type lifting arm thereof | |
| CN209291791U (en) | Box beam suspender | |
| CN205076725U (en) | Revolving stage structure and have hoist of wind -powered electricity generation installation ship of this revolving stage structure | |
| CN201703997U (en) | Special wind power arm head device for caterpillar crane | |
| CN203158195U (en) | Boarding ladder for shipbuilding | |
| CN105584939A (en) | Arm head special for wind power generator hoisting | |
| CN202022677U (en) | Wheeled crane and variable amplitude assistant arm thereof |
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 |