CN106241632B - A kind of tower crane with rock-steady structure - Google Patents
A kind of tower crane with rock-steady structure Download PDFInfo
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- CN106241632B CN106241632B CN201610843384.2A CN201610843384A CN106241632B CN 106241632 B CN106241632 B CN 106241632B CN 201610843384 A CN201610843384 A CN 201610843384A CN 106241632 B CN106241632 B CN 106241632B
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- tower body
- connector
- hawser
- tower
- column
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The present invention relates to engineering machinery field for building, especially a kind of tower crane with rock-steady structure, including tower body, column foot and rock-steady structure made of being vertically overlapped by standard knot, rock-steady structure includes hawser and Extension support, and Extension support connect with tower body and stretches out outside tower body；The both ends of hawser are separately connected tower body and column foot, middle part are supported by Extension support, and the link position of hawser and tower body is located at outside tower body, and hawser overlaps the resultant force of tower body vertical tension with tower body axis.The tower crane of the structure can increase tower crane trimming moment in the horizontal direction by hawser, to improve the stability of tower crane in use, ensure the safety that equipment uses, the versatility and generalization of the structure are good, its is easy for assemble or unload, can make the stability of tower crane by increasing the length of Extension support.
Description
Technical field
The present invention relates to engineering machinery field for building, especially a kind of tower crane with rock-steady structure.
Background technology
Tower crane, i.e. " derrick crane " abbreviation, also known as " tower crane ".It is for a kind of lifting equipment in construction.One
As domestic standard title be all so, certainly, due to our German Liebherrs of country's study and the smooth skill of French wave
Art manufactures derrick crane, and also formula defines model name by external encoding law for some producers.Derrick crane can also
Be divided into many kinds by the form difference of design, for example, tower crane, inner climbing type tower crane, flat-top tower crane, movable arm type tower crane,
Ready-package tower crane etc..Tower crane installation needs foundation on the ground；Tower body is tower crane body and raised part；Top
Ascending part point is that tower crane is increased；Revolution is to maintain what tower crane can rotate horizontally above the waist；Lifting mechanism is used for weigh
What object raised up；Balance arm support is to maintain equalising torque；Elevator boom rack is generally exactly the part of the force of lifting heavy；Trolley
For installing pulley blocks and steel cable and suspension hook, and it is stressed directly part；Tower top is certainly used for keeping arm support stress flat
Weighing apparatus；Drivers' cab is the place of operation；Luffing is so that trolley orbiting.
Invention content
The goal of the invention of the present invention is：In view of the above problems, a kind of tower crane with rock-steady structure, the knot are provided
The tower crane of structure can increase tower crane trimming moment in the horizontal direction by hawser, to improve tower crane in use steady
It is qualitative, ensure the safety that equipment uses, the versatility and generalization of the structure are good, easy for assemble or unload, can pass through increasing
The length of Extension support is added to make the stability of tower crane.By the setting of hawser protector, hawser can be prevented compared with being made under strong pulling force
Hidden danger is left at internal break, the security risk on hawser can be shown by breaking device, placement steel cable, which breaks, to be made
At harm.
The technical solution adopted by the present invention is as follows：
The invention discloses a kind of tower cranes with rock-steady structure, including tower body, column foot made of being vertically overlapped by standard knot,
And rock-steady structure, rock-steady structure include hawser and Extension support, Extension support connect with tower body and stretches out outside tower body；The both ends of hawser point
Not Lian Jie tower body and column foot, middle part supported by Extension support, the link position of hawser and tower body is located at outside tower body, and hawser is perpendicular to tower body
It is overlapped to the resultant force of pulling force with tower body axis.The tower crane of the structure can increase tower crane equilibrant force in the horizontal direction by hawser
Square ensures the safety that equipment uses, the versatility of the structure and popularization to improve the stability of tower crane in use
Property it is good, it is easy for assemble or unload, the stability of tower crane can be made by increasing the length of Extension support.
Further, multiple Extension supports are set side by side on tower body, Extension support is fixedly connected respectively with hawser and supporting cable
Rope, Extension support are hinged with tower body.By the frame that is delayed, it can be more conducive to the transmission of pulling force, improve the globality that hawser is stablized,
Stabilization tower body structure that can be section by section, improves the stability of tower body.
Further, the length of Extension support is 1-1.5 times of tower body width, and extends the outside that friendship is hinged on tower body；Hawser
Be 1.3-3 times of tower body width at a distance from the tie point to tower body axis of column foot.The choosing of the link position and Extension support length
The torque for ensureing that Extension support can preferably extend standard knot transverse direction is selected, ensures tower body stability of equilibrium.
Further, hawser protector is provided on hawser, hawser protector is for detecting whether drawstring is more than specified drawing
Power.By hawser protector, security risk caused by capable of preventing hawser from breaking.
Further, hawser protector includes shell, the first connector, the second connector and breaks part, the first connector with
By breaking part connection, shell is set in be broken part and the first connector, the second connector and breaks outside part second connector,
The pulling force between the first connector and the second connector is born by shell after breaking part and being pulled off.Hawser protector hawser uses
Safety, before so that pulling force is reached the specified pull-off force of drawstring, first break this and break part, to effectively whether observing hawser
Excess load uses, and then improves the protection feature of hawser.
Further, cushion chamber is equipped between the first connector or the second connector and shell, on the side wall of cushion chamber
Pore equipped with connection hull outside；After breaking part and being pulled off, the first connector or the second connector squeeze cushion chamber and make to delay
Rush chamber drain or exhaust.Cushion chamber can reduce the pulling force between hawser by certain displacement, to reduce instantaneous pulling force pair
The damage of equipment.
Further, first connector includes drag link end and connecting pin, and connecting pin has the card slot of lateral openings, card slot
For breaking part clamping, the dismounting of the opening of card slot for breaking part, drag link end one end is connect with connecting pin, the other end runs through simultaneously
Stretch out shell；First connector is identical as the second connecting-piece structure.The structure now can break the fast of part by the design of card slot
Speed is replaced, and can realize Fast Installation and use.
Further, the thickness of cushion chamber is 3-6cm, and liquid packet or/and aeriferous powder packet are housed in cushion chamber, is squeezed slow
Liquid packet or aeriferous powder bags burst can be made and be discharged from pore by rushing chamber；Break part be in dumbbell shaped, including the first joint end,
Second joint end and axis is broken, the first joint end and the second joint end are separately connected the both ends for breaking axis, the first joint end and
Two joint ends are clamped with the first connector and the second joint end respectively, are provided with specified pull-off force in the middle part of axis breaking and are less than
Break portion in remaining position；It shell, the first connector, the second connector and breaks part and is integrally formed and is applied in combination respectively, make
It shell, the first connector, the second connector and breaks part and can individually replace；Be respectively provided in cushion chamber powder pigments packet and
Petrolic solvent packet, powder pigments packet and petrolic solvent packet are by balloon as container, the interior sky with 50-60% of powder pigments packet
Gas.Pore can be convenient to the preservation of buffering intracavity liquid and powder, break whether part is pulled off to be convenient to observation.It breaks
The tension uniform that part is born, and pulling force is born at axis, to improve the workability and replaceability of breaking axis.
Further, the column foot is made of following methods：
Step 1：Cross-shape frame is made using screw thread steel column, the convex shape steel bar of upper side opening and thin wire, the cross
Shape frame upper side is open；The round pool that a 5.5-6m is deep, radius is 2-2.5m is dug in the position of tower crane to be positioned；
Step 2：The position that four arms of cross-shape frame are corresponded in the bottom of round pool drills out that 8-12 5-9m be deep, radius is
0.2-0.4m deep holes are inserted into the column frame coordinated with it in each deep hole, and column frame is by 3-4 vertical steel column and several annulars
Steel ring is welded, and steel column is welded on the outside of annular steel ring；
Step 3：Concrete is poured into column frame, support column is made, the broken of 0.5-0.6m thickness is filled in support column surrounding
Stone and slag, and rubble and slag are compacted, as metalling；The disk of 0.4-0.5m thickness is set above rubble and slag
Frame, circular disk rack by strip waste and old steel bar it is at random be distributed, in the gap fill concrete of circular disk rack, discs layers are made；
Step 4：Uniformly beat that 1-1.2m is deep, diagonally downward more of 5-8cm radiuses on round pool side wall on the upside of discs layers
Reinforcing bar is inserted into perforation and simultaneously pours into concrete in inclined hole, is linked together each inclined hole by concrete, is made by a inclined hole
Inclined hole layer；
Step 5：Inclined hole layer and discs layers are made as one；Metalling, discs layers and inclined hole layer are made in duplication of laying equal stress on makes brand-new
The inclined hole layer obtained is less than 50cm at a distance from ground and is flushed with support column top；
Step 6：Cross-shape frame is set up in support column top horizontal, cross is made in cross-shape frame injection concrete
Each arm be in convex shape mounting layer, the upper surface of mounting layer flushes with ground, and clump weight is arranged between each arm of mounting layer,
Then it is flushed with ground using gap to the rubble and slag around rubble and slag filling clump weight.
Column foot stability made from this method is strong, stable structure, can effectively prevent deflection, can improve column foot to tower
The bearing capacity hung can be suitable for installation of the different soil properties to column foot, the service life that can improve column foot of the column foot, energy
Building site waste material is enough made full use of to carry out the installation of column foot.
Further, installation method：
Step 1：Tower body is vertically installed in the middle part of column foot, with vertical hawser connect tower body top and column foot it is outer
Side；
Step 2：It is symmetrical arranged Extension support in tower body outer periphery, and is fixedly connected with hawser on the outside of Extension support, makes cable
Rope in the horizontal direction overlaps the power of tower body with the axis of tower body the dynamic balance of tower body, vertical direction.This method, design letter
Single, it is convenient to promote, and can be convenient to be installed and used on the tower body of existing structure, guarantor is provided for the safe handling of tower crane
Barrier.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1. the tower crane of the structure can increase tower crane trimming moment in the horizontal direction by hawser, exist to improve tower crane
Stability during use ensures the safety that equipment uses, and the versatility and generalization of the structure are good, installing and dismounting side
Just, the stability of tower crane can be made by increasing the length of Extension support.
2. by the setting of hawser protector, hawser can be prevented compared with causing internal break to leave hidden danger under strong pulling force,
Security risk on hawser can be shown by breaking device, place caused by steel cable breaks and endanger.
Description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is the front view of the tower crane with rock-steady structure；
Fig. 2 is hawser protector structure figure；
Fig. 3 is the sectional view of connector.
Reference numeral：1- shells, the second connectors of 2-, the first connectors of 3-, 4- break part, 5- cushion chambers, 6- pores, 7-
Card slot, 8- hawsers, 9- Extension supports, 10- tower bodies, 11- column foots.
Specific implementation mode
Embodiment 1
As shown in Figs. 1-3, a kind of tower crane with rock-steady structure, including tower body 10, tower made of being vertically overlapped by standard knot
Base 11 and rock-steady structure, rock-steady structure include hawser and Extension support 9, and Extension support 9 connect with tower body 10 and stretches out outside tower body 10；
The both ends of hawser are separately connected tower body 10 and column foot 11, middle part are supported by Extension support 9, and the link position of hawser and tower body 10 is located at
Outside tower body 10, hawser overlaps the resultant force of 10 vertical tension of tower body with 10 axis of tower body.
Multiple Extension supports 9 are set side by side on tower body 10, Extension support 9 is fixedly connected with hawser and supports hawser respectively,
Extension support 9 is hinged with tower body 10.
The length of Extension support 9 is 1-1.5 times of 10 width of tower body, and extends the outside handed over and be hinged on tower body 10；Hawser with
The distance of the tie point of column foot 11 to 10 axis of tower body is 1.3-3 times of 10 width of tower body.
Hawser protector is provided on hawser, hawser protector is for detecting whether drawstring is more than specified pulling force.
Hawser protector includes shell 1, the first connector 3, the second connector 2 and breaks part 4, the first connector 3 and
Two connectors 2 are connected by breaking part 4, and shell 1, which is set in, to be broken part 4 and the first connector 3, the second connector 2 and break part
Outside 4, the pulling force between first connector 3 and the second connector 2 is born by shell 1 after breaking part 4 and being pulled off.
It is equipped with cushion chamber 5 between the first connector 3 or the second connector 2 and shell 1, is set on the side wall of cushion chamber 5
There is the pore 6 outside connection shell 1；After breaking part 4 and being pulled off, the first connector 3 or the second connector 2 squeeze cushion chamber 5
Make 5 drain of cushion chamber or exhaust.
First connector 3 includes drag link end and connecting pin, and connecting pin has the card slot 7 of lateral openings, and card slot 7 is for breaking
Part 4 is clamped, and the dismounting of the opening of card slot 7 for breaking part 4, drag link end one end is connect with connecting pin, the other end runs through and is stretched out
Shell 1；First connector 3 is identical as 2 structure of the second connector.
The thickness of cushion chamber 5 is 3-6cm, and liquid packet or/and aeriferous powder packet are housed in cushion chamber 5, squeeze cushion chamber 5
It can make liquid packet or aeriferous powder bags burst and be discharged from pore 6；It is in dumbbell shaped, including the first joint end, the to break part 4
Two joint ends and axis is broken, the first joint end and the second joint end are separately connected the both ends for breaking axis, the first joint end and second
Joint end is clamped with the first connector 3 and the second joint end respectively, and specified pull-off force is provided in the middle part of axis less than it breaking
Break portion in remaining part position；It shell 1, the first connector 3, the second connector 2 and breaks part 4 and is integrally formed and is applied in combination respectively,
Make shell 1, the first connector 3, the second connector 2 and breaks part 4 and can individually replace；Powder face is respectively provided in cushion chamber 5
By balloon as container, powder pigments packet is interior to have 50- for material packet and petrolic solvent packet, powder pigments packet and petrolic solvent packet
60% air.
Embodiment 2
Column foot 11 in embodiment 1 is made of following methods：
Step 1：Cross-shape frame is made using screw thread steel column, the convex shape steel bar of upper side opening and thin wire, the cross
Shape frame upper side is open；The round pool that a 5.5-6m is deep, radius is 2-2.5m is dug in the position of tower crane to be positioned；
Step 2：The position that four arms of cross-shape frame are corresponded in the bottom of round pool drills out that 8-12 5-9m be deep, radius is
0.2-0.4m deep holes are inserted into the column frame coordinated with it in each deep hole, and column frame is by 3-4 vertical steel column and several annulars
Steel ring is welded, and steel column is welded on the outside of annular steel ring；
Step 3：Concrete is poured into column frame, support column is made, the broken of 0.5-0.6m thickness is filled in support column surrounding
Stone and slag, and rubble and slag are compacted, as metalling；The disk of 0.4-0.5m thickness is set above rubble and slag
Frame, circular disk rack by strip waste and old steel bar it is at random be distributed, in the gap fill concrete of circular disk rack, discs layers are made；
Step 4：Uniformly beat that 1-1.2m is deep, diagonally downward more of 5-8cm radiuses on round pool side wall on the upside of discs layers
Reinforcing bar is inserted into perforation and simultaneously pours into concrete in inclined hole, is linked together each inclined hole by concrete, is made by a inclined hole
Inclined hole layer；
Step 5：Inclined hole layer and discs layers are made as one；Metalling, discs layers and inclined hole layer are made in duplication of laying equal stress on makes brand-new
The inclined hole layer obtained is less than 50cm at a distance from ground and is flushed with support column top；
Step 6：Cross-shape frame is set up in support column top horizontal, cross is made in cross-shape frame injection concrete
Each arm be in convex shape mounting layer, the upper surface of mounting layer flushes with ground, and clump weight is arranged between each arm of mounting layer,
Then it is flushed with ground using gap to the rubble and slag around rubble and slag filling clump weight.
Embodiment 3
The installation method of tower crane in embodiment 1 is：
Step 1：Tower body 10 is vertically installed to 11 middle part of column foot, top and the column foot of tower body 10 are connected with vertical hawser
11 outside；
Step 2：It is symmetrical arranged Extension support 9 in 10 outer periphery of tower body, and hawser is fixedly connected in the outside of Extension support 9,
Hawser is set to be overlapped in the horizontal direction with the axis of tower body 10 to the power of tower body 10 to the dynamic balance of tower body 10, vertical direction.
Claims (5)
1. a kind of tower crane with rock-steady structure, which is characterized in that including tower body made of being vertically overlapped by standard knot（10）, column foot
（11）And rock-steady structure, rock-steady structure include hawser and Extension support（9）, Extension support（9）With tower body（10）It connects and stretches out tower body
（10）Outside；The both ends of hawser are separately connected tower body（10）And column foot（11）, middle part is by Extension support（9）Support, hawser and tower body
（10）Link position be located at tower body（10）Outside, hawser is to tower body（10）The resultant force and tower body of vertical tension（10）Axis overlaps；
In tower body（10）On be set side by side with multiple Extension supports（9）, Extension support（9）Hawser is fixedly connected with and supported with hawser respectively, is prolonged
Stretch frame（9）With tower body（10）It is hinged；Extension support（9）Length be tower body（10）1-1.5 times of width, and extend to hand over and be hinged on tower
Body（10）Outside；Hawser and column foot（11）Tie point to tower body（10）The distance of axis is tower body（10）The 1.3-3 of width
Times；Hawser protector is provided on hawser, hawser protector is for detecting whether drawstring is more than specified pulling force；Hawser protector
Including shell（1）, the first connector（3）, the second connector（2）And break part（4）, the first connector（3）With the second connector
（2）By breaking part（4）Connection, shell（1）It is set in and breaks part（4）With the first connector（3）, the second connector（2）And it draws
Broken piece（4）Outside, when breaking part（4）By shell after being pulled off（1）Bear the first connector（3）With the second connector（2）Between
Pulling force；In the first connector（3）Or second connector（2）With shell（1）Between be equipped with cushion chamber（5）, in cushion chamber（5）Side
Wall is equipped with connection shell（1）External pore（6）；Breaking part（4）After being pulled off, the first connector（3）Or second connection
Part（2）Squeeze cushion chamber（5）Make cushion chamber（5）Drain or exhaust.
2. the tower crane with rock-steady structure as described in claim 1, which is characterized in that first connector（3）Including pull rod
End and connecting pin, connecting pin have the card slot of lateral openings（7）, card slot（7）For breaking part（4）Clamping, card slot（7）Opening
For breaking part（4）Dismounting, drag link end one end is connect with connecting pin, the other end runs through and stretches out shell（1）；First connector
（3）With the second connector（2）Structure is identical.
3. the tower crane with rock-steady structure as claimed in claim 2, which is characterized in that cushion chamber（5）Thickness be 3-6cm, delay
Rush chamber（5）It is interior that liquid packet or/and aeriferous powder packet are housed, squeeze cushion chamber（5）Liquid packet or aeriferous powder packet can be made broken
It splits and from pore（6）Place's discharge；Break part（4）In dumbbell shaped, including the first joint end, the second joint end and axis is broken, first
Joint end and the second joint end are separately connected the both ends for breaking axis, the first joint end and the second joint end respectively with the first connector
（3）And the second joint end clamping, it is provided with specified pull-off force in the middle part of axis breaks portion breaking less than remaining position；Shell
（1）, the first connector（3）, the second connector（2）And break part（4）It is integrally formed and is applied in combination respectively, make shell（1）、
First connector（3）, the second connector（2）And break part（4）It can individually replace；In cushion chamber（5）Inside it is respectively provided with powder face
By balloon as container, powder pigments packet is interior to have 50- for material packet and petrolic solvent packet, powder pigments packet and petrolic solvent packet
60% air.
4. the tower crane with rock-steady structure as described in claim 1, which is characterized in that the column foot（11）Using following methods system
Make：
Step 1：Cross-shape frame is made using screw thread steel column, the convex shape steel bar of upper side opening and thin wire, the cross frame
Side opening on frame；The round pool that a 5.5-6m is deep, radius is 2-2.5m is dug in the position of tower crane to be positioned；
Step 2：The position that four arms of cross-shape frame are corresponded in the bottom of round pool drills out 8-12 5-9m depths, radius 0.2-
0.4m deep holes are inserted into the column frame coordinated with it in each deep hole, and column frame is by 3-4 vertical steel column and several annular steel rings
It is welded, steel column is welded on the outside of annular steel ring；
Step 3：Concrete is poured into column frame, support column is made, support column surrounding fill 0.5-0.6m thickness rubble and
Slag, and rubble and slag are compacted, as metalling；The circular disk rack of 0.4-0.5m thickness, circle are set above rubble and slag
Plate rail by strip waste and old steel bar it is at random be distributed, in the gap fill concrete of circular disk rack, discs layers are made；
Step 4：Uniformly beaten on round pool side wall on the upside of discs layers 1-1.2m it is deep, it is 5-8cm radiuses diagonally downward it is multiple tiltedly
Reinforcing bar is inserted into perforation and simultaneously pours into concrete in inclined hole, is linked together each inclined hole by concrete, inclined hole is made by hole
Layer；
Step 5：Inclined hole layer and discs layers are made as one；Lay equal stress on duplication make metalling, discs layers and inclined hole layer make it is freshly prepared
Inclined hole layer is less than 50cm at a distance from ground and is flushed with support column top；
Step 6：Cross-shape frame is set up in support column top horizontal, is made in cross-shape frame injection concrete criss-cross each
Arm is in the mounting layer of convex shape, and the upper surface of mounting layer is flushed with ground, clump weight is arranged between each arm of mounting layer, then
It is flushed with ground using gap to the rubble and slag around rubble and slag filling clump weight.
5. the tower crane with rock-steady structure as described in claim 1, which is characterized in that its installation method：
Step 1：By tower body（10）Vertically it is installed to column foot（11）Middle part connects tower body with vertical hawser（10）Top and tower
Base（11）Outside；
Step 2：In tower body（10）Outer periphery is symmetrical arranged Extension support（9）, and in Extension support（9）Outside be fixedly connected with cable
Rope, makes hawser in the horizontal direction to tower body（10）Dynamic balance, vertical direction is to tower body（10）Power and tower body（10）Axis
It overlaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610843384.2A CN106241632B (en) | 2016-09-23 | 2016-09-23 | A kind of tower crane with rock-steady structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610843384.2A CN106241632B (en) | 2016-09-23 | 2016-09-23 | A kind of tower crane with rock-steady structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106241632A CN106241632A (en) | 2016-12-21 |
| CN106241632B true CN106241632B (en) | 2018-08-17 |
Family
ID=57610776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610843384.2A Active CN106241632B (en) | 2016-09-23 | 2016-09-23 | A kind of tower crane with rock-steady structure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112125141A (en) * | 2020-09-11 | 2020-12-25 | 国网新疆电力有限公司阿勒泰供电公司 | Hoisting accessory for equipment on electric power post |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU422679A1 (en) * | 1971-11-22 | 1974-04-05 | И. М. Добровинский, И. С. Маркозов , И. Г. Кац | SELF LIFT Crane |
| CN2072078U (en) * | 1990-09-10 | 1991-02-27 | 上海市建筑施工技术研究所 | Multifunctional combined tower crane |
| CN2286746Y (en) * | 1997-01-29 | 1998-07-29 | 水利部烟台水工机械厂 | Tower-body standard section |
| CN2437653Y (en) * | 2000-09-21 | 2001-07-04 | 花周建 | Rope break protection device for lift hook |
| CN103043543B (en) * | 2013-01-17 | 2014-09-24 | 浙江东欣建设集团有限公司 | Device for reinforcing tower crane in coastal zone |
| CN204702420U (en) * | 2015-06-19 | 2015-10-14 | 武汉钢铁(集团)公司 | A kind of anti-steel rope breaking device |
| CN206203743U (en) * | 2016-09-23 | 2017-05-31 | 广西理工职业技术学校 | A kind of tower crane with rock-steady structure |
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2016
- 2016-09-23 CN CN201610843384.2A patent/CN106241632B/en active Active
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| Publication number | Publication date |
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| CN106241632A (en) | 2016-12-21 |
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