CN102795557B - Crane - Google Patents
Crane Download PDFInfo
- Publication number
- CN102795557B CN102795557B CN201210321197.XA CN201210321197A CN102795557B CN 102795557 B CN102795557 B CN 102795557B CN 201210321197 A CN201210321197 A CN 201210321197A CN 102795557 B CN102795557 B CN 102795557B
- Authority
- CN
- China
- Prior art keywords
- arm
- support
- poppet
- tensioner mechanism
- hoisting crane
- 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
Landscapes
- Jib Cranes (AREA)
Abstract
The invention discloses a crane. The crane comprises a turntable, a main arm, a working arm, a front bracket, a rear bracket, a third bracket, a winch and a pull rope wound on the outside of the winch, wherein the winch is arranged on the turntable; the root part of the main arm is hinged with the turntable; the root parts of all the working arm, the front bracket, the rear bracket and the third bracket are hinged to a connecting frame at the arm head of the main arm, and the sequence is that the working arm, the front bracket, the rear bracket, the third bracket and the main arm; the free end of the working arm is connected with the free end of the front bracket by a first tension mechanism; the free end of the front bracket is connected with the free end of the rear bracket through a second tension mechanism; one end of the third tension mechanism is connected with the free end of the rear bracket while the other end of the third tension mechanism is connected with the pull rope; and the free end of the third bracket is provided with a support part for supporting the third tension mechanism. The crane has the advantages of increasing torque of the pull rope of the winch to the working arm and simplifying the craning process of the crane due to the support of the third bracket during the craning process of the crane.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of hoisting crane.
Background technology
Along with the fast development of China's economic construction, market for telescopic arm crane particularly the demand of large-tonnage telescopic arm crane day by day increase.
In recent years, camp site is more and more higher for the requirement of total arm length, lifting altitude and a liter weight of hoisting crane, and therefore conventional hoisting crane (for example wheeled telescopic arm crane) is just towards the future development maximizing; Maximization is an important design goal of hoisting crane.
100 tonnes of above full Terrain Cranes are equipped with working arm conventionally, and working arm is arranged on the arm head of the flexible principal arm of large-tonnage wheel crane conventionally.
Please refer to Fig. 1 to Fig. 4, Fig. 1 is a kind of structural representation typically with the hoisting crane of working arm, Fig. 2 is position one schematic diagram in arm process that rises of hoisting crane shown in Fig. 1, Fig. 3 is position two schematic diagrams in arm process that rise of hoisting crane shown in Fig. 1, and Fig. 4 is position three schematic diagrams in arm process that rise of hoisting crane shown in Fig. 1.
Working arm 2 is arranged on the erecting frame 8 of described flexible principal arm 1 arm head, and front frame 3 and after poppet 4 are also all installed on the erecting frame 8 of principal arm 1 arm head.The free end of working arm 2 is with the free end of front frame 3, the free end of the free end of front frame 3 and after poppet 4 is connected by rope or the arm-tie of fixed length, and working arm 2, front frame 3 and after poppet 4 have formed truss arm.The first stay cord that is positioned at the first elevator 5 of rotating platform of crane is connected with the free end of after poppet 4, and the second stay cord of the second elevator 6 is connected with the free end of working arm 2 with front frame 3 both fulcrums at middle part through after poppet 4.
During the hoister in large tonnage hoisting heavy of said structure:
First play principal arm 1, the arm head of working arm 2 is along ground, the direction to hoisting crane moves, and as shown in Figure 2, when the angle α of working arm 2 and principal arm 1 is greater than 75 degree and is less than 105 while spending, principal arm 1 stops hoisting.
Then operate the first elevator 5 pull-up working arms 2, when the angle β of working arm 2 and principal arm 1 is greater than 5 degree and is less than 50 while spending, shut-down operation.
Continue afterwards the principal arm 1 that hoists, play principal arm 1 to maximum elevation γ and stretch out principal arm 1, in this process, keep working arm 2 and the angle β of principal arm to be greater than all the time 5 degree and to be less than 50 degree, can guarantee that complete machine there will not be in playing arm process tumbles, and principal arm 1 extend out to hoisting crane while specifying operating mode and completed lifting process.
An arm process of above-mentioned hoisting crane is very complicated, the angle β of requirement working arm 2 and principal arm 1 remains and is greater than 5 degree and is less than 50 degree, to repeatedly operate principal arm 1 and working arm 2 luffings, need repeatedly to operate the first elevator 5 and the second elevator 6, whole operating process more complicated, not only waste time and energy, and higher to the technical requirements of operating personal.
Therefore, how simplifying the arm process that rises of hoisting crane, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of hoisting crane, the simple easily operation of the arm process that rises of this hoisting crane.
For realizing above-mentioned technical purpose, the invention provides a kind of hoisting crane, the stay cord that comprises turntable, principal arm, working arm, front frame, after poppet, elevator and be wound in its outside; Described elevator is assemblied in described turntable, and the root of described principal arm is articulated with described turntable; Described working arm, described front frame and described after poppet three's root is all articulated with the link span of described principal arm arm head, is followed successively by: working arm, front frame, after poppet and principal arm; The free end of described working arm is connected by the first tensioner mechanism with the free end of described front frame, and the free end of described front frame is connected by the second tensioner mechanism with the free end of described after poppet; Also comprise the 3rd support and the 3rd tensioner mechanism, described the 3rd support is articulated with between described after poppet and described principal arm, described the 3rd tensioner mechanism one end connects the free end of described after poppet, the other end connects described stay cord, and the free end of described the 3rd support has the support component that supports described the 3rd tensioner mechanism.
Preferably, described the 3rd tensioner mechanism is connected by attaching parts with described stay cord, and the support component of described the 3rd support can support described attaching parts.
Preferably, have the 4th tensioner mechanism between described the 3rd support and described after poppet, described the 4th tensioner mechanism makes described the 3rd support become predetermined angular with described after poppet, attaching parts described in described support member supports.
Preferably, the root of described the 3rd support is articulated with the link span of described principal arm arm head.
Preferably, the root of described the 3rd support is articulated with the lower end of described after poppet.
Preferably, the root of the root of described after poppet and described the 3rd support is hinged by the link span of same jointed shaft and described principal arm arm head.
Preferably, the root of described working arm is hinged by attaching parts and described link span, and the root of described front frame and described attaching parts are hinged.
Preferably, the second stay cord that is also provided with the second elevator on described turntable and is wound in its outside, the fulcrum that passes successively described the 3rd support, described after poppet and described front frame three middle part of described the second stay cord, is connected with the free end of described working arm.
Preferably, described the first tensioner mechanism, described the second tensioner mechanism, described the 3rd tensioner mechanism and described the 4th tensioner mechanism are rope or the folding arm-tie of fixed length.
Hoisting crane provided by the invention, the stay cord that comprises turntable, principal arm, working arm, front frame, after poppet, the 3rd support, elevator and be wound in its outside; Elevator is assemblied in turntable, and the root of principal arm is articulated with turntable; The root of working arm, front frame, after poppet and the 3rd support is all articulated with the link span of principal arm arm head, is followed successively by: working arm, front frame, after poppet, the 3rd support and principal arm; The free end of working arm is connected by the first tensioner mechanism with the free end of front frame, and the free end of front frame is connected by the second tensioner mechanism with the free end of after poppet; The 3rd tensioner mechanism one end connects the free end of after poppet, and the other end connects stay cord, and the free end of the 3rd support has the support component that supports the 3rd tensioner mechanism.
In the arm process that rises of hoisting crane, due to the 3rd support of support to stay cord, increased the moment of elevator stay cord to working arm, can make whole arm process simplification for first playing principal arm to maximum elevation, then operated elevator working arm luffing is put in place.
When hoisting crane plays arm, first play principal arm to maximum elevation, stretch out principal arm to specifying operating mode, in this process, working arm arm head, by the direction to hoisting crane moves along ground, then operates elevator, pull-up working arm, finally make the angle of working arm and principal arm remain in the scope of 5 to 50 degree, hoisting crane has completed whole lifting process.
After the 3rd stent support the 3rd tensioner mechanism, in the process of operation elevator, the invariant position of the 3rd tensioner mechanism of the 3rd stent support, the 3rd support, the 3rd tensioner mechanism and after poppet have formed leg-of-mutton truss arm.
Concrete, the connection mode of the 3rd support can be the link span that its root is directly articulated with principal arm arm head, its root also can be articulated with the lower end of after poppet, also has a kind of connection mode, and the root of the root of after poppet and the 3rd support is hinged by the arm head of same jointed shaft and principal arm.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation typically with the hoisting crane of working arm;
Fig. 2 is position one schematic diagram in arm process that rises of hoisting crane shown in Fig. 1;
Fig. 3 is position two schematic diagrams in arm process that rise of hoisting crane shown in Fig. 1;
Fig. 4 is position three schematic diagrams in arm process that rise of hoisting crane shown in Fig. 1;
Fig. 5 is the structural representation of a kind of specific embodiment of hoisting crane provided by the present invention;
Fig. 6 is that the hoisting crane shown in Fig. 5 plays position one schematic diagram in arm process;
Fig. 7 is that the hoisting crane shown in Fig. 5 plays position two schematic diagrams in arm process;
Fig. 8 is that the hoisting crane shown in Fig. 5 plays position three schematic diagrams in arm process;
Fig. 9 is a kind of specific embodiment schematic diagram of the 3rd support of the hoisting crane shown in Fig. 5;
Figure 10 is the 3rd support-folding view shown in Fig. 9.
The specific embodiment
Core of the present invention is to provide a kind of hoisting crane, the simple easily operation of the arm process that rises of this hoisting crane.
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 5 to Fig. 8, Fig. 5 is the structural representation of a kind of specific embodiment of hoisting crane provided by the present invention, Fig. 6 is that the hoisting crane shown in Fig. 5 plays position one schematic diagram in arm process, Fig. 7 is that the hoisting crane shown in Fig. 5 plays position two schematic diagrams in arm process, and Fig. 8 is that the hoisting crane shown in Fig. 5 plays position three schematic diagrams in arm process.
In a kind of concrete embodiment, the invention provides a kind of hoisting crane, the stay cord 57 that comprises turntable 9, principal arm 1, working arm 2, front frame 3, after poppet 4, the 3rd support 7, elevator 5 and be wound in its outside; Elevator 5 is assemblied in turntable 9, and the root of principal arm 1 is articulated with turntable 9; The root of working arm 2, front frame 3, after poppet 4 and the 3rd support 7 four is all articulated with the link span of principal arm 1 arm head, is followed successively by: working arm 2, front frame 3, after poppet 4, the 3rd support 7 and principal arm 1; The free end of working arm 2 is connected by the first tensioner mechanism 32 with the free end of front frame 3, and the free end of front frame 3 is connected by the second tensioner mechanism 43 with the free end of after poppet 4; The 3rd tensioner mechanism 74 one end connect the free end of after poppet 4, and the free end that the other end connects stay cord 57, the three supports 7 has the support component that supports the 3rd tensioner mechanism 74.
The hoisting crane of this structure rises in arm process, support due to the 3rd support 7, increase the moment of 57 pairs of working arms 2 of stay cord of elevator 5, can make the whole process simplification that hoists for first playing principal arm 1 to maximum elevation γ, and then operation elevator 5 has put working arm 2 luffings in place.
When hoisting crane plays arm, first play principal arm 1 directly to maximum elevation γ, position one as shown in Figure 6; Then stretch out principal arm 1 to specifying operating mode, position two as shown in Figure 7, in this process, the arm head of working arm 2 is by along ground, the direction to hoisting crane moves; Then operate elevator 5, pull-up working arm 2, finally makes the angle of working arm 2 and principal arm 1 within the scope of 5～50 degree, position three as shown in Figure 8, and hoisting crane has completed whole arm process.
The arm step that rises of hoisting crane is simplified, the simple to operate easy realization of operating personal in whole operation process.
The 3rd support 7 supports after the 3rd tensioner mechanism 74, in the process of operation elevator 5, and the invariant position of the 3rd tensioner mechanism 74 that the 3rd support 7 supports, the 3rd support 7, the 3rd tensioner mechanism 74 and after poppet 4 have formed leg-of-mutton truss arm.Meanwhile, working arm 2, front frame 3 and the first tensioner mechanism 32 have formed triangular truss arm; Front frame 3, after poppet 4 and the second tensioner mechanism 43 have also formed a leg-of-mutton truss arm.
Stay cord 57 pulls the 3rd tensioner mechanism 74, and drives after poppet 4, and then pulls the second tensioner mechanism 43 and drive front frame 3, and front frame 3 drives working arm 2 luffings by the first tensioner mechanism 32.Stay cord 57 pulls triangular truss arm carry-over moment successively one by one by the support of the 3rd support 7, after being delivered to working arm 2, make its luffing, because the support of the 3rd support 7 has increased the moment that stay cord 57 imposes on working arm 2, when hoisting crane is during in position shown in Fig. 7, stay cord 57 can pull-up working arm 2, has simplified the arm process that rises of hoisting crane.
In another kind of concrete embodiment, described the 3rd tensioner mechanism 74 is connected by attaching parts 71 with described stay cord 57, and the support component of described the 3rd support 7 can support described attaching parts 71.
Hoisting crane rises in arm process, the 3rd support 7 support connecting pieces 71, and in the process of operation elevator 5, the triangle that the 3rd support 7, the 3rd tensioner mechanism 74 and after poppet 4 form has definite shape, more stable.
A kind of preferred embodiment in, between the 3rd support 7 and after poppet 4, there are the 4th tensioner mechanism 47, the four tensioners mechanism 47 and make 4 one-tenth predetermined angulars of the 3rd support 7 and after poppet, support member supports attaching parts 71.
The setting of the 4th tensioner mechanism 47 is can support connecting piece 71 in order to ensure the support component of the 3rd support 7.The two ends of the 4th tensioner mechanism 47 can, respectively between the root hinge and free end of the 3rd support 7 and after poppet 4, also can overlap with the 3rd tensioner mechanism 74.
Please refer to Fig. 9 and Figure 10, Fig. 9 is a kind of specific embodiment schematic diagram of the 3rd support of the hoisting crane shown in Fig. 5, and Figure 10 is the 3rd support-folding view shown in Fig. 9.
Concrete, the type of attachment of the 3rd support 7 can be the link span that its root is articulated with principal arm 1 arm head, can also be the lower end that the root of the 3rd support 7 is articulated with after poppet 4.
Also have a kind of connection mode, the root of the root of after poppet 4 and the 3rd support 7 is hinged with the arm head of principal arm 1 by same jointed shaft 82.The leg-of-mutton truss arm that the 3rd support 7, after poppet 4 and the 3rd tensioner mechanism 74 form can rotate around jointed shaft 82.
Concrete, the root of described working arm 2 is hinged by attaching parts 81 and described link span 8, and the root of described front frame 3 and described attaching parts 81 are hinged.In whole amplitude changing process, the triangular truss arm integral body that working arm 2, front frame 3 and the first tensioner mechanism 32 form remains unchanged, and rotates around attaching parts 81 and the hinge-point of link span 8.
The free end of working arm 2 is connected by the first tensioner mechanism 32 with the free end of front frame 3, angle between working arm 2 and front frame 3 remains unchanged, the triangular truss arm that working arm 2, front frame 3 and the first tensioner mechanism 32 form hoists in process whole, and its angle remains unchanged.Working arm 2 is common hinged by attaching parts 81 and link span 8 with front frame 3, has formed stable leg-of-mutton truss arm.
A kind of preferred embodiment in, the second stay cord 62 that is also provided with the second elevator 6, the second elevators 6 on turntable 9 through the fulcrum at the 3rd support 7, after poppet 4 and front frame 3 threes middle parts, is connected with the free end of working arm 2 successively.
In the free end connection procedure of the second stay cord 62 and working arm 2, by the strong point at the 3rd support 7, after poppet 4 and front frame 3 middle parts.Whole, hoist in process, the second elevator 6 has increased the pulling force to working arm 2, has shared the pulling force of elevator 5.
In sum, the first tensioner mechanism 32, the second tensioner mechanism 43, the 3rd tensioner mechanism 74 and the 4th tensioner mechanism 47 are rope or the folding arm-tie of fixed length.
Above-mentioned all tensioners mechanism are all collapsible, and the 3rd support 7 can also arrange the form that can be folded into one with after poppet 4.When needs are used the 3rd support 7, open it, while not using, can be packed up.
Above hoisting crane provided by the present invention is 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 (9)
1. a hoisting crane, the stay cord (57) that comprises turntable (9), principal arm (1), working arm (2), front frame (3), after poppet (4), elevator (5) and be wound in its outside; Described elevator (5) is assemblied in described turntable (9), and the root of described principal arm (1) is articulated with described turntable (9); Described working arm (2), described front frame (3) and described after poppet (4) three's root is all articulated with the link span (8) of described principal arm (1) arm head, and according to the adjacent setting of order of working arm (2), front frame (3), after poppet (4) and principal arm (1); The free end of described working arm (2) is connected by the first tensioner mechanism (32) with the free end of described front frame (3), and the free end of described front frame (3) is connected by the second tensioner mechanism (43) with the free end of described after poppet (4); It is characterized in that, also comprise the 3rd support (7) and the 3rd tensioner mechanism (74), described the 3rd support (7) is articulated with between described after poppet (4) and described principal arm (1), described the 3rd tensioner mechanism (74) one end connects the free end of described after poppet (4), the other end connects described stay cord (57), and the free end of described the 3rd support (7) has the support component that supports described the 3rd tensioner mechanism (74).
2. hoisting crane as claimed in claim 1, it is characterized in that, described the 3rd tensioner mechanism (74) is connected by attaching parts (71) with described stay cord (57), and the support component of described the 3rd support (7) can support described attaching parts (71).
3. hoisting crane as claimed in claim 2, it is characterized in that, between described the 3rd support (7) and described after poppet (4), there is the 4th tensioner mechanism (47), described the 4th tensioner mechanism (47) makes described the 3rd support (7) become predetermined angular with described after poppet (4), attaching parts (71) described in described support member supports.
4. hoisting crane as claimed in claim 3, is characterized in that, the root of described the 3rd support (7) is articulated with the link span (8) of described principal arm (1) arm head.
5. hoisting crane as claimed in claim 3, is characterized in that, the root of described the 3rd support (7) is articulated with the lower end of described after poppet (4).
6. hoisting crane as claimed in claim 3, is characterized in that, the root of the root of described after poppet (4) and described the 3rd support (7) is hinged with the link span (8) of described principal arm (1) arm head by same jointed shaft (82).
7. the hoisting crane as described in claim 3 to 6 any one, it is characterized in that, the root of described working arm (2) is hinged by attaching parts (81) and described link span (8), and the root of described front frame (3) and described attaching parts (81) are hinged.
8. hoisting crane as claimed in claim 7, it is characterized in that, the second stay cord (62) that is also provided with the second elevator (6) on described turntable (9) and is wound in its outside, the fulcrum that passes successively described the 3rd support (7), described after poppet (4) and described front frame (3) three middle part of described the second stay cord (62), is connected with the free end of described working arm (2).
9. hoisting crane as claimed in claim 8, it is characterized in that, described the first tensioner mechanism (32), described the second tensioner mechanism (43), described the 3rd tensioner mechanism (74) and described the 4th tensioner mechanism (47) are rope or the folding arm-tie of fixed length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210321197.XA CN102795557B (en) | 2012-09-03 | 2012-09-03 | Crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210321197.XA CN102795557B (en) | 2012-09-03 | 2012-09-03 | Crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102795557A CN102795557A (en) | 2012-11-28 |
| CN102795557B true CN102795557B (en) | 2014-10-29 |
Family
ID=47194905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210321197.XA Active CN102795557B (en) | 2012-09-03 | 2012-09-03 | Crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102795557B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601082B (en) * | 2013-11-22 | 2015-06-17 | 中联重科股份有限公司 | Crane and arm rising method thereof |
| CN107915159A (en) * | 2017-12-11 | 2018-04-17 | 徐州重型机械有限公司 | A kind of Crane Jib Structure |
| CN111137796A (en) * | 2019-12-12 | 2020-05-12 | 徐州重型机械有限公司 | Novel jib crane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1160167A (en) * | 1997-08-27 | 1999-03-02 | Hitachi Constr Mach Co Ltd | Tower crane |
| CN1693176A (en) * | 2005-04-04 | 2005-11-09 | 山东鲁能光大重型机械设备有限公司 | All hydraulic caterpillar cranes |
| CN201024053Y (en) * | 2007-04-10 | 2008-02-20 | 山东丰汇设备技术有限公司 | Truss structure modular type super big mast type crane |
| CN202848933U (en) * | 2012-09-03 | 2013-04-03 | 徐州重型机械有限公司 | Crane |
-
2012
- 2012-09-03 CN CN201210321197.XA patent/CN102795557B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1160167A (en) * | 1997-08-27 | 1999-03-02 | Hitachi Constr Mach Co Ltd | Tower crane |
| CN1693176A (en) * | 2005-04-04 | 2005-11-09 | 山东鲁能光大重型机械设备有限公司 | All hydraulic caterpillar cranes |
| CN201024053Y (en) * | 2007-04-10 | 2008-02-20 | 山东丰汇设备技术有限公司 | Truss structure modular type super big mast type crane |
| CN202848933U (en) * | 2012-09-03 | 2013-04-03 | 徐州重型机械有限公司 | Crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102795557A (en) | 2012-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101659378A (en) | Lift and superlift device thereof | |
| CN106395645B (en) | Wind-powered electricity generation arm method for turning and crane | |
| CN103663189B (en) | Moving arm tower crane installation method | |
| CN105110213A (en) | Crane provided with counterweight balance mechanism adopting dead weight of hoisted object as well as crane transformation scheme | |
| CN102795557B (en) | Crane | |
| CN201495051U (en) | Crane jib for flat-top tower crane | |
| CN201214598Y (en) | Column crane special for movable arm type tower erection | |
| CN203998705U (en) | Single arm frame steel wire rope luffing stationary crane | |
| CN102303821A (en) | Luffing tower crane with balanced type suspension arm based on traction luffing of steel rope | |
| CN107140557B (en) | Special arm support structure for wind power and crane | |
| CN202575785U (en) | Portal crane and four-connecting-rod system thereof | |
| CN202296907U (en) | Suspension arm balanced movable arm tower crane capable of luffing based on steel rope traction | |
| CN202848933U (en) | Crane | |
| CN205892576U (en) | Fast set up tower crane's jib loading boom turns over a device | |
| CN203568724U (en) | Mast and engineering machine vehicle configured with same | |
| CN210620068U (en) | Wind-resistant crane | |
| CN115535890A (en) | Cantilever crane system and crawler crane | |
| CN101003350B (en) | Erecting and mounting method for up-rotation self erecting tower crane | |
| CN202011702U (en) | Chain type cable supporting device | |
| CN206088818U (en) | Arm equipment is torn open in extra -large -size tower machine high altitude | |
| CN205892554U (en) | Fast set up tower crane's body of tower turns over a device | |
| CN200995933Y (en) | Self-erection and up-rotating tower-type elevator | |
| CN206203724U (en) | A kind of Novel fixed-type crane | |
| CN203306948U (en) | Single-power multi-multiplying power luffing mechanism | |
| CN205555924U (en) | A system's device for high altitude dismantlement tower crane |
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 |