CN207608244U - Steel tower crane Special crane jib and iron towers of overhead power transmission lines crane - Google Patents
Steel tower crane Special crane jib and iron towers of overhead power transmission lines crane Download PDFInfo
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- CN207608244U CN207608244U CN201721481482.2U CN201721481482U CN207608244U CN 207608244 U CN207608244 U CN 207608244U CN 201721481482 U CN201721481482 U CN 201721481482U CN 207608244 U CN207608244 U CN 207608244U
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- steel tower
- tripod
- crane
- main backstop
- power transmission
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 75
- 239000010959 steel Substances 0.000 title claims abstract description 75
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 230000005540 biological transmission Effects 0.000 title claims abstract description 23
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 21
- 230000003028 elevating effect Effects 0.000 claims description 24
- 230000001360 synchronised effect Effects 0.000 claims description 16
- 230000003319 supportive effect Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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Abstract
Steel tower crane Special crane jib and iron towers of overhead power transmission lines crane, belong to overhead transmission line apparatus field.Including main backstop, upper tripod, lower tripod and telescopic bracing frame；Upper tripod and lower tripod can be close to each other and separate.Iron towers of overhead power transmission lines crane includes crawler body and is set to the steel tower derricking gear of crawler body.In electric system, full terrain crawler-type steel tower crane will can integrally be sling in the assembled iron towers of overhead power transmission lines in ground and lift to construction location, steel tower crane Special crane jib is just mounted to full terrain crawler-type steel tower crane and the lifting arm for lifting by crane iron towers of overhead power transmission lines, there is the principle of stability using triangle, sound construction is reliable and the steel tower after lifting can be made to be in always perpendicular to the position on ground, so as to more favorably accomplish the lifting work of steel tower.Iron towers of overhead power transmission lines crane can significantly improve construction efficiency by mounted steel tower integral hoisting to construction location.
Description
Technical field
The present invention relates to overhead transmission line apparatus fields, in particular to steel tower crane Special crane jib and make somebody a mere figurehead
Iron tower of power transmission line crane.
Background technology
" iron towers of overhead power transmission lines " is the conducting wire and lightning conducter for supporting high pressure or super-pressure aerial power transmission line
Structures.Previous setting up for iron towers of overhead power transmission lines is all constantly up to set up completion by one one angle steel, is adopted
It is set up with this kind of mode, it will take a lot of manpower and time.
Invention content
The purpose of the present invention is to provide steel tower crane Special crane jibs, lift by crane steel tower for crane, make the steel tower after lifting
Always it is in perpendicular to the position on ground, more favorably accomplishes the lifting work of steel tower.
It is another object of the present invention to provide iron towers of overhead power transmission lines cranes, to improve construction efficiency.
The invention is realized in this way：
Steel tower crane Special crane jib, including main backstop, upper tripod, lower tripod and telescopic bracing frame；
Main backstop is vertically arranged, upper tripod and lower tripod is correspondingly arranged and the same side is set to main backstop, on
Tripod and lower tripod can be close to each other and separate；Each angle of lower tripod being connect with main backstop and upper triangle
It is connected by telescopic bracing frame between one not connect with main backstop jiao of frame；
One not connect with main backstop jiao of upper tripod and lower tripod is respectively arranged with lifting pawl.
There is the principle of stability using triangle.Using two tripods of upper tripod and lower tripod, control upper three
Stabilization in plane residing for corner bracket and lower tripod is more easy to that tripod and lower tripod is made to be parallel to ground setting.It is flexible oblique
Support constructs triangular structure between upper tripod and lower tripod, and tripod is avoided to incline relative to lower tripod
Tiltedly, in this way, upper tripod, lower tripod, main backstop and telescopic bracing frame collectively form the shape of a similar straight triangular pyramid,
Upper tripod and lower tripod after lifting by crane steel tower, steel tower can perpendicular to the plane residing for upper tripod and lower tripod,
It is just perpendicular to ground setting, lifting is more stablized, and the stress equalization of arm everywhere is made, more easy to control.If steel tower is in lifting
Process constantly swings or topples over, and since steel tower is bulky, will increase the operation difficulty of lifting process, more dangerous,
The requirement of mechanical strength higher of arm.
Therefore, it can be more easy to make steel tower perpendicular to ground lifting using steel tower crane Special crane jib provided by the present application, rise
The stability for hanging process is also more prone to control, and reduces lifting difficulty and improves construction efficiency.
Optionally, main backstop includes mainboard and at least two synchronous adjustment bars, and mainboard is provided with vertical guide groove, and two same
Step pole is respectively arranged with plus thread section and left-hand thread section, and two synchronous adjustment bars are rotatably dispose in side by side in vertical guide groove；
The strut thread bush for being set to main backstop of upper tripod is set to the plus thread section of two synchronous adjustment bars and sliding is embedded at
In vertical guide groove, the strut thread bush for being set to main backstop of lower tripod be set to the left-hand thread section of two synchronous adjustment bars and
Sliding is embedded in vertical guide groove.
Optionally, the both sides of vertical guide groove are respectively arranged with limiting slot, and upper tripod and lower tripod are set to main branch
The both ends of the strut of support are respectively arranged with position limiting slide block, and each position limiting slide block sliding is embedded at a limiting slot.
Optionally, multiple first mounting holes are arranged at intervals in vertical guide groove in the vertical direction；Upper tripod and lower triangle
It is respectively arranged with the second mounting hole in the middle part of the strut of frame being embedded in vertical guide groove；Two the second mounting holes can respectively with
One the first mounting hole is corresponding and is connected and fixed by connector.
Optionally, the outside of two synchronous adjustment bars is arranged with cushioning supportive spring respectively.
Optionally, telescopic bracing frame includes elevating lever and two telescopic bracing framves, and elevating lever is provided with external thread section, lifting
The bottom end of bar is rotatably dispose in one not connect with main backstop jiao of lower tripod, two telescopic bracing framves with upper tripod
One end of connection is hinged by connector, and connector thread bush is set to the outside of elevating lever；Upper tripod not with main backstop
One jiao of outside for being movably set in elevating lever of connection is simultaneously supported in connector.
Optionally, connector is provided with the polygon groove being surrounded on the outside of elevating lever, upper tripod not with main backstop
One jiao of setting polygon ring of connection, polygon ring can be embedded at polygon groove.
Optionally, be provided with more shrinking connecting-rods between two telescopic bracing framves, the both ends of every shrinking connecting-rod respectively with
Telescopic bracing frame is hinged.
Optionally, multiple connecting springs are provided between two telescopic bracing framves, the both ends of each connecting spring connect respectively
It is connected to telescopic bracing frame.
A kind of iron towers of overhead power transmission lines crane, including crawler body and be set to crawler body steel tower derricking gear,
Steel tower lifting operation room, steel tower derricking gear include steel tower crane Special crane jib, and two lifting pawls are for clamping steel tower.
Beneficial effects of the present invention：In electric system, iron towers of overhead power transmission lines is set up, often by one one
Up installation is complete for angle steel, and full terrain crawler-type steel tower crane can will be in the assembled iron towers of overhead power transmission lines in ground
Entirety is sling and is lifted to construction location, and steel tower crane Special crane jib provided by the present application is just mounted to full terrain crawler-type iron
Tower crane vehicle and the lifting arm for being used to lift by crane iron towers of overhead power transmission lines utilize triangle to have the principle of stability, sound construction
Reliably and the steel tower after lifting can be made to be in always perpendicular to the position on ground, so as to more favorably accomplish steel tower
Lifting work.
Mounted steel tower integral hoisting to construction location can be significantly improved construction by iron towers of overhead power transmission lines crane
Efficiency.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of the side-looking direction of steel tower crane Special crane jib provided in an embodiment of the present invention；
Fig. 2 is the structure of the upper tripod of steel tower crane Special crane jib shown in FIG. 1；
Fig. 3 is the structural schematic diagram that upper tripod and lower tripod is not arranged in steel tower crane Special crane jib shown in FIG. 1；
Fig. 4 is the structural schematic diagram in the main view direction of steel tower crane Special crane jib shown in FIG. 1.
In figure：100- main backstops；110- mainboards；The vertical guide grooves of 120-；The first mounting holes of 130-；140- limiting slots；
150- is adjusted in synchronism bar；160- cushioning supportive springs；The upper tripods of 200-；Tripod under 210-；220- position limiting slide blocks；230- is more
Side shape ring；The second mounting holes of 240-；300- telescopic bracing framves；400- lifts by crane pawl；500- elevating levers；510- telescopic bracing bars；
520- connecting springs；530- connectors；540- polygon grooves.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that the orientation of instructions such as term "center", " vertical ", "horizontal" or
Position relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when the orientation usually put or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, " connection " may be a fixed connection, can also be detachably to connect
It connects, or is integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
Embodiment 1, referring to figs. 1 to Fig. 4.
As depicted in figs. 1 and 2, steel tower crane Special crane jib provided in this embodiment, including main backstop 100, upper triangle
Frame 200, lower tripod 210 and telescopic bracing frame 300；
Main backstop 100 is vertically arranged, upper tripod 200 and lower tripod 210 is correspondingly arranged and the same side is set to master
Supporting rack 100, upper tripod 200 and lower tripod 210 can be close to each other and separate；Lower tripod 210 and main backstop
By telescopic bracing frame between each angle and one jiao not connect with main backstop 100 of upper tripod 200 of 100 connections
300 connections；
One jiao not connect with main backstop 100 of upper tripod 200 and lower tripod 210 is respectively arranged with lifting pawl
400。
There is the principle of stability using triangle.Using 210 two tripods of upper tripod 200 and lower tripod, control
Stabilization in system in plane residing for tripod 200 and lower tripod 210, is more easy to keep tripod 200 parallel with lower tripod 210
It is arranged in ground.Telescopic bracing frame 300 constructs triangular structure between upper tripod 200 and lower tripod 210, avoids three
Corner bracket 200 is relative to 210 run-off the straight of lower tripod, in this way, upper tripod 200, lower tripod 210, main backstop 100 and stretching
Contracting end wall bracket 300 collectively forms the shape of a similar straight triangular pyramid, upper tripod 200 and lower tripod 210 in lifting steel tower
Afterwards, steel tower can be arranged perpendicular to the plane residing for upper tripod 200 and lower tripod 210, that is, perpendicular to ground, lifting
More stablize, makes the stress equalization of arm everywhere, it is more easy to control.If steel tower constantly swings or inclines in the process of lifting
, since steel tower is bulky, the operation difficulty of lifting process, more dangerous, the requirement of mechanical strength higher of arm will be increased.
Therefore, it can be more easy to make steel tower perpendicular to ground lifting using steel tower crane Special crane jib provided by the present application, rise
The stability for hanging process is also more prone to control, and reduces lifting difficulty and improves construction efficiency.
Spacing between upper tripod 200 and lower tripod 210 is adjustable, can be according to lifting position when practical operation
Variation adjusts upper spacing between tripod 200 and lower tripod 210, expands the scope of application.Practical lifting process is such：
First iron towers of overhead power transmission lines is set up, then using being provided with steel tower crane Special crane jib provided by the present application, using stretching
Contracting end wall bracket 300 adjusts upper spacing between tripod 200 and lower tripod 210, then by upper tripod 200 and lower tripod
Lifting pawl 400 in 210 blocks the positions different up and down of steel tower respectively, then mobile upper tripod 200 and lower tripod
210, it will be able to sling steel tower perpendicular to ground, whole process is fast rapid, significantly improves construction efficiency.
As shown in figure 3, main backstop 100 includes mainboard 110 and at least two synchronous adjustment bars 150, mainboard 110 are provided with
Vertical guide groove 120, two synchronous adjustment bars 150 are respectively arranged with plus thread section and left-hand thread section, and two synchronous adjustment bars 150 are simultaneously
Row is rotatably dispose in vertical guide groove 120；The strut thread bush for being set to main backstop 100 of upper tripod 200 is set to two
It is adjusted in synchronism the plus thread section of bar 150 and sliding is embedded in vertical guide groove 120, lower tripod 210 is set to main backstop
100 strut thread bush is set to the left-hand thread section of two synchronous adjustment bars 150 and sliding is embedded in vertical guide groove 120.
" strut for being set to main backstop 100 of upper tripod 200 ", upper tripod 200 is made of three struts, wherein
A piece strut sliding is embedded in vertical guide groove 120, and lower tripod 210 is also such structure.
It is adjusted in synchronism bar 150 and is provided with plus thread section and left-hand thread section, plus thread section and left-hand thread section volume are oppositely oriented.Together
The lower triangle that 150 positive and negative rotation of step pole can drive the upper tripod 200 for being set to plus thread section and be set to left-hand thread section
Frame 210 is close to each other and separate, to adjust upper spacing between tripod 200 and lower tripod 210, to be suitable for different height
Steel tower or the steel tower different suitable for lifting by crane position.
The lateral dimension for the strut that the vertical chute is embedded at due to the sliding of upper tripod 200 and lower tripod 210 is longer,
Therefore, two, three or four synchronous adjustment bars 150, which are arranged, to be carried to the movement of upper tripod 200 and lower tripod 210
For enough driving forces, deflection is prevented.It needs to rotate synchronously between more synchronous adjustment bars 150 and can drive tripod
200 and lower tripod 210 move in parallel in the vertical chute and smoothly move.Synchronization between more synchronous adjustment bars 150 turns
It is dynamic, it can be realized by gear set.
As shown in figure 3, the both sides of vertical guide groove 120 are respectively arranged with limiting slot 140, upper tripod 200 and lower tripod
The both ends of 210 strut for being set to main backstop 100 are respectively arranged with position limiting slide block 220, and each position limiting slide block 220 slides embedding
Set on a limiting slot 140.
Limiting slot 140 plays the role of limit and guiding, and limited block is merely able to move back and forth back and forth along limiting slot 140.
Moving in parallel for the cross bar of tripod 200 and lower tripod 210 being set in the vertical chute is ensure that, to be not susceptible to
Offset, smoothly can smoothly move along limiting slot 140 always.
As shown in figure 3, being arranged at intervals with multiple first mounting holes 130 in the vertical direction in vertical guide groove 120；Upper tripod
200 and lower tripod 210 the strut being embedded in vertical guide groove 120 in the middle part of be respectively arranged with the second mounting hole 240；Two
Second mounting hole 240 can be corresponding with first mounting hole 130 respectively and be connected and fixed by connector 530.
The adjusting of spacing between upper tripod 200 and lower tripod 210 is real by the positive and negative rotation for being adjusted in synchronism bar 150
It is existing, when adjusting to setting position, by the way that the second mounting hole 240 of the strut of upper tripod 200 is consolidated with this moment corresponding first
Determine hole 130 and connect by connector 530 to realize and fix, under fall apart frame strut the second mounting hole 240 also with corresponding first
Mounting hole 130 is connected by connector 530 and realizes fixation.Bolt, screw rod, the structures such as bolt may be used in connector 530.
As shown in figure 3, the outside of two synchronous adjustment bars 150 is arranged with cushioning supportive spring 160 respectively.
Cushioning supportive spring 160 plays the role of the upper tripod 200 of support and lower tripod 210, avoids relying solely on same
The plus thread of step pole 150 and the threaded connection relation of left-hand thread section fix upper tripod 200 and lower tripod 210, cause
It is adjusted in synchronism 150 thread failure of bar or unbalance stress, is distorted.
As shown in figure 4, telescopic bracing frame 300 includes elevating lever 500 and two telescopic bracing framves 300, elevating lever 500 is arranged
There is an external thread section, the bottom end of elevating lever 500 is rotatably dispose in one jiao not connect with main backstop 100 of lower tripod 210, and two
The one end of a telescopic bracing frame 300 being connect with upper tripod 200 is hinged by connector 530, and 530 thread bush of connector is set to
The outside of elevating lever 500；One jiao not connect with main backstop 100 of upper tripod 200 is movably set in the outer of elevating lever 500
Side is simultaneously supported in connector 530.
The sliding of the strut of upper tripod 200 and lower tripod 210 is embedded at the vertical chute, upper tripod 200 and lower triangle
Plane residing for frame 210 is respectively parallel to the plane residing for main corbel, and the setting direction of elevating lever 500 is perpendicular to upper tripod
200 and lower tripod 210 residing for plane, and be parallel to the plane residing for main corbel, therefore elevating lever 500 rotates forward
In the process, one end that two telescopic bracing framves 300 are threadedly connected to elevating lever 500 moves up, and tripod 200 is not in driving
Be set to main corbel one jiao is moved up and (is moved up relative to main corbel), meanwhile, the side of upper tripod 200 is in synchronization
It is moved up along the vertical chute under the action of adjusting rod 150, by controlling elevating lever 500 and being adjusted in synchronism the rotating speed of bar 150
Tripod 200 is parallel to the movement of lower tripod 210 always in realization.
It is adjusted in synchronism bar 150 to rotate, tripod 200 and lower 210 synchronizing moving of tripod, direction can be driven opposite.If
The elevating lever 500 of lower tripod 210 is placed in as lower tripod 210 moves, upper tripod 200 then in elevating lever 500 and stretches
The synchronizing moving with lower tripod 210 is realized under the action of diagonal brace.
As shown in figure 4, connector 530 is provided with the polygon groove 540 for being surrounded on 500 outside of elevating lever, upper tripod 200
Do not connect with main backstop 100 one jiao setting polygon ring 230, polygon ring 230 can be embedded at polygon groove 540.
Using polygonized structure, be not set to main corbel one jiao and connector 530 of tripod 200 can be limited
It circumferentially rotates, tripod 200 is avoided to glance off.
As shown in figure 4, being provided with more shrinking connecting-rods, the both ends of every shrinking connecting-rod between two telescopic bracing framves 300
It is hinged with telescopic bracing frame 300 respectively.
More shrinking connecting-rods play the role of support connection, and the structure that can further enhance steel tower crane Special crane jib is strong
Degree, so that tripod 200 and lower tripod 210 is parallel to ground always, enable its lift by crane steel tower always perpendicular to
Ground.
As shown in figure 4, being provided with multiple connecting springs 520, each connecting spring 520 between two telescopic bracing framves 300
Both ends be connected to telescopic bracing frame 300.
Connecting spring 520 plays the role of support connection, and the structure that can further enhance steel tower crane Special crane jib is strong
Degree, so that tripod 200 and lower tripod 210 is parallel to ground always, enable its lift by crane steel tower always perpendicular to
Ground.
The present embodiment additionally provides a kind of iron towers of overhead power transmission lines crane, including crawler body and is set to crawler body
Steel tower derricking gear, steel tower lifting operation room, steel tower derricking gear includes steel tower crane Special crane jib, two lifting pawls 400
For clamping steel tower.
Iron towers of overhead power transmission lines crane can utilize steel tower crane Special crane jib whole in the mounted steel tower in ground
Perpendicular to ground lifting to construction location, construction efficiency is significantly improved.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of steel tower crane Special crane jib, which is characterized in that including main backstop, upper tripod, lower tripod and stretch oblique
Support；
The main backstop is vertically arranged, the upper tripod and the lower tripod are correspondingly arranged and the same side be set to it is described
Main backstop, the upper tripod and the lower tripod can be close to each other and separate；The lower tripod with the master
It is stretched by described between each angle and one jiao not connect with the main backstop of the upper tripod of supporting rack connection
Contracting end wall bracket connects；
One jiao not connect with the main backstop of the upper tripod and the lower tripod is respectively arranged with lifting pawl.
2. steel tower crane Special crane jib according to claim 1, which is characterized in that the main backstop includes mainboard and extremely
Few two synchronous adjustment bars, the mainboard are provided with vertical guide groove, and two synchronous adjustment bars are respectively arranged with plus thread section
With left-hand thread section, two synchronous adjustment bars are rotatably dispose in side by side in the vertical guide groove；The setting of the upper tripod
It is set to two plus thread sections for being adjusted in synchronism bar in the strut thread bush of the main backstop and sliding is embedded at described erect
Into guide groove, the strut thread bush for being set to the main backstop of the lower tripod is set to two bars that are adjusted in synchronism
Left-hand thread section and sliding be embedded in the vertical guide groove.
3. steel tower crane Special crane jib according to claim 2, which is characterized in that the both sides of the vertical guide groove are set respectively
It is equipped with limiting slot, the both ends of the strut for being set to the main backstop of the upper tripod and the lower tripod are respectively set
There is position limiting slide block, each position limiting slide block sliding is embedded at a limiting slot.
4. steel tower crane Special crane jib according to claim 2, which is characterized in that in the vertical guide groove in the vertical direction
It is arranged at intervals with multiple first mounting holes；The support of the upper tripod and the lower tripod being embedded in the vertical guide groove
The second mounting hole is respectively arranged in the middle part of bar；Two second mounting holes can respectively with first mounting hole pair
It should and be connected and fixed by connector.
5. steel tower crane Special crane jib according to claim 2, which is characterized in that two outsides for being adjusted in synchronism bar
It is arranged with cushioning supportive spring respectively.
6. steel tower crane Special crane jib according to claim 1, which is characterized in that the telescopic bracing frame includes elevating lever
With two telescopic bracing framves, the elevating lever is provided with external thread section, and the bottom end of the elevating lever is rotatably dispose in described lower three
One jiao not connect with the main backstop of corner bracket, the one end of two telescopic bracing framves being connect with the upper tripod
Hinged by connector, the connector thread bush is set to the outside of the elevating lever；The upper tripod not with the master
One jiao of outside for being movably set in the elevating lever of supporting rack connection is simultaneously supported in the connector.
7. steel tower crane Special crane jib according to claim 6, which is characterized in that the connector, which is provided with, is surrounded on institute
The polygon groove on the outside of elevating lever is stated, polygon ring is arranged in one jiao not connect with the main backstop of the upper tripod,
The polygon ring can be embedded at the polygon groove.
8. steel tower crane Special crane jib according to claim 6, which is characterized in that set between two telescopic bracing framves
More shrinking connecting-rods are equipped with, the both ends of the every shrinking connecting-rod are hinged with the telescopic bracing frame respectively.
9. steel tower crane Special crane jib according to claim 6, which is characterized in that set between two telescopic bracing framves
Multiple connecting springs are equipped with, the both ends of each connecting spring are connected to the telescopic bracing frame.
10. a kind of iron towers of overhead power transmission lines crane, which is characterized in that including crawler body and be set to the crawler body
Steel tower derricking gear, steel tower lifting operation room, the steel tower derricking gear includes described in any one of claim 1 to 9
Steel tower crane Special crane jib, two lifting pawls are for clamping steel tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721481482.2U CN207608244U (en) | 2017-11-08 | 2017-11-08 | Steel tower crane Special crane jib and iron towers of overhead power transmission lines crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721481482.2U CN207608244U (en) | 2017-11-08 | 2017-11-08 | Steel tower crane Special crane jib and iron towers of overhead power transmission lines crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207608244U true CN207608244U (en) | 2018-07-13 |
Family
ID=62794616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721481482.2U Expired - Fee Related CN207608244U (en) | 2017-11-08 | 2017-11-08 | Steel tower crane Special crane jib and iron towers of overhead power transmission lines crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207608244U (en) |
-
2017
- 2017-11-08 CN CN201721481482.2U patent/CN207608244U/en not_active Expired - Fee Related
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