CN103233867A - Pile centralizing and rectification system - Google Patents
Pile centralizing and rectification system Download PDFInfo
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- CN103233867A CN103233867A CN2013101637101A CN201310163710A CN103233867A CN 103233867 A CN103233867 A CN 103233867A CN 2013101637101 A CN2013101637101 A CN 2013101637101A CN 201310163710 A CN201310163710 A CN 201310163710A CN 103233867 A CN103233867 A CN 103233867A
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- jig arm
- deviation
- pile body
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- clamp arm
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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Abstract
The invention discloses a pile centralizing and rectification system which comprises a clamp arm. The clamp arm comprises a large clamp arm and a small clamp arm which are respectively provided with two sections of arcs, wherein a moving end is arranged at one end and is movably connected onto a clamp sleeve, and a connection end is arranged at the other end and is closely enclosed to form a ring buckling a pile. Pushing systems are respectively arranged on the large clamp arm and the small clamp arm, and the pushing directions of the pushing systems face to the circle center of the ring. Bases of the pushing systems are arranged on the arcs of the large clamp arm or the small clamp arm, jacks are arranged on the bases and face towards the circle center, supports are arranged at the top ends of the jacks, and rollers are arranged at the tops of the supports. The pile centralizing and rectification system can change the existing complex structure; the pushing structures are arranged in the large clamp arm and the small clamp arm so that the integral system structure is simplified; and the clamp arms arranged on the upper side and the lower side can effectively increase the rectification applied moment, therefore initial penetration into mud verticality of steel piles can be strictly controlled, and further the function of sinking pile centralizing and rectification of the steel piles with different water depths and lengths can be achieved.
Description
Technical field
The present invention relates to a kind of offshore wind farm equipment erection unit, more particularly, relate to a kind of pile body and set upright and deviation-rectifying system.
Background technique
In recent years, along with the offshore wind farm unit to high power, the maximization direction develops, the difficulty of construction of offshore wind farm foundation pile is increasing, technical requirements is more and more higher, and the offshore construction environment is abominable, does not have the support of high technology equipment, is difficult to be competent at.Difference according to sea bed geology, foundation pile type and the dimensional changes of offshore wind farm unit are various, single tube stake from the multitube stake of diameter more than 1 meter to 6～7 meters of diameters, length reaches 40～60 meters, and weight reaches more than 700 ton, even bigger, longer, the required precision of piling is 4/1000ths, even 2/1000ths, equipment and construction have been proposed high requirement.
The patent No.: among the ZL201120129170.1, domestic first full hydraulic piling correction and righting device appearred, but its maximum correction power has only 50 tons, and be positioned at deck plane, non-double layer construction greatly reduces centering capacity and efficiency of construction, thrust devices such as oil cylinder is located at the upper surface of jig arm, taken valuable construction space, left some room for improvement.
And a new generation that order this paper will introduce piling correction and righting device to adapt to the diameter range of driving piles at present be 2 meters to 6 meters, and has double-deck rectifying device, can independently control for every layer, its maximum centering capacity reaches 100 tons, and the correction mode can be divided into XY two to the coarse adjustment of ± 1 meter scope and the accurate adjustment of circumferential surface 4 points ± 150mm scope.
Piling correction auxiliary system for the older generation, the individual layer operation, as the hull operating water depth during shallow or seat beach operation, long 50 meters of pile body, center of gravity is higher, and the correction point that is positioned at deck plane is on the low side, according to lever principle, maximum centering capacity is less, and the correction operating efficiency is on the low side, be difficult to realize the demand of large-scale piling bar piling perpendicularity, moreover set upright guide function when the correction of individual layer design also is difficult to realize pile sinking.
Summary of the invention
Purpose of the present invention aims to provide a kind of pile body and sets upright and deviation-rectifying system, solve system architecture complexity, precision in the prior art not high, be unfavorable for the problem of constructing.
According to the present invention, provide a kind of pile body to set upright and deviation-rectifying system, comprise jig arm.Jig arm comprises big jig arm and little jig arm, big jig arm and two sections circular arcs of little jig arm, and an end is movable end, is movably connected on chuck, the other end is connecting end, annulus that fastens pile body of closed ring coiled.On big jig arm and the little jig arm pushing tow system is set respectively, the pushing tow direction of pushing tow system is towards the center of circle of annulus.The pedestal of pushing tow system is arranged on the circular arc of big jig arm or little jig arm, and jack is set on the pedestal, the direction towards the center of circle, and the top of jack arranges strut, and the top of strut arranges roller.
According to one embodiment of the invention, centralizing system comprises two jig arm that arrange vertically, connects with supporting leg between two jig arm.
According to one embodiment of the invention, the circular arc of big jig arm correspondence is major arc, and the circular arc of clip arm correspondence is minor arc.
According to one embodiment of the invention, on the big jig arm 3 pushing tow systems are set, 1 pushing tow system is set on the little jig arm.
According to one embodiment of the invention, the connecting end of big jig arm is public tapered end, and the connecting end of little jig arm is female tapered end, and public tapered end and female tapered end are fixed by bearing pin, and bearing pin connects vertical lock oil cylinder.
According to one embodiment of the invention, connect by the pile holding oil cylinder between big jig arm and chuck, little jig arm and the chuck.
According to one embodiment of the invention, chuck is connected with telescopic boom, and the other end of telescopic boom is connected with pivoted arm, and the both sides of pivoted arm and telescopic boom arrange promotes mainly oil cylinder.
According to one embodiment of the invention, the telescopic boom both sides arrange the thruster system, and telescopic boom passes the thruster system framework and is connected with chuck.The thruster system is vertical with telescopic boom.
According to one embodiment of the invention, setting operation platform in the thruster system is positioned at the telescopic boom top.
According to one embodiment of the invention, the front leg strut end arranges preceding pedestal, and the end of pivoted arm arranges the back pedestal, and supporting leg comprises front leg strut and rear support leg, and front leg strut is connected with preceding pedestal, and rear support leg is connected with the back pedestal.
According to one embodiment of the invention, the distance in pushing tow system maximum extension position and the center of circle is 2～6 meters.
According to one embodiment of the invention, the scope that the center of circle of the closed circle that big jig arm, clip arm form can the be movable i.e. correction scope of maximum is that XY two is to ± 1 meter.
Adopted technological scheme of the present invention, can change existing labyrinth, especially make push structure be installed in large and small jig arm inside, simplified whole system architecture, and the structure of both sides jig arm can effectively increase the correction opplied moment up and down, can form simultaneously and set upright the guide frame structure, can realize the perpendicularity of strict control piling bar initial penetration into mud, heavy and realize the different depth of waters, the pile sinking of different length piling bar is set upright and the deviation-correcting function of driving piles.
Description of drawings
In the present invention, identical reference character is represented identical feature all the time, wherein:
Fig. 1 is that pile body of the present invention is set upright the plan view with deviation-rectifying system;
Fig. 2 is that pile body of the present invention is set upright the side view with deviation-rectifying system;
Fig. 3 is the structural representation of pushing tow system;
Fig. 4 A and Fig. 4 B are the structural representations of public tapered end and female tapered end;
Fig. 5 is the use schematic representation of pile body centralizing system of the present invention.
Embodiment
Further specify technological scheme of the present invention below in conjunction with drawings and Examples.
See figures.1.and.2, the present invention is made as jig arm two-layer up and down, but every layer of equal independent operation, and every layer by pivoted arm 17, telescopic boom 14 chucks 7 and large and small jig arm composition.Pivoted arm 17 can rotate around rear support leg 18 hinges.Two interlamellar spacing certain distances, lower floor is positioned at main deck surface, thereby can effectively increase the correction opplied moment, can form simultaneously and set upright the guide frame structure, can realize the perpendicularity of strict control piling bar initial penetration into mud, piling bar is gone into behind the mud and deflection occurred in the piling process, also can correct the perpendicularity of piling bar by oil cylinder.Heavy and realize the different depth of waters, the pile sinking of different length piling bar is set upright and the deviation-correcting function of driving piles.
Jig arm comprises big jig arm 1 and clip arm 5, big jig arm 1 and 5 two sections circular arcs of clip arm, and an end is movable end, is movably connected on chuck 7, the other end is connecting end, annulus that fastens pile body of closed ring coiled.Big jig arm 1, clip arm 5 all can rotate by the coupling shaft on chuck 7, thereby realize expansion and the closure of jig arm.On big jig arm 1 and the clip arm 5 pushing tow system 2 is set respectively.
In order to adapt to the pile sinking operation of large-tonnage major diameter piling bar, dissolving hoist causes member from the potential safety hazard of the nearer easy collision of topside to the deficiency of the large-tonnage large-diameter member lift heavy turning radius, jig arm is designed to left and right sides unsymmetric form, the configuration that is that one is long and the other is short, the circular arc of big jig arm 1 correspondence is major arc, and the circular arc of clip arm 5 correspondences is minor arc.Can effectively solve the contradiction of crane rotation radius deficiency, also can effectively avoid the collision of pile body and ship side, realize hanging normally stake and piling correction operation.
As shown in Figure 3, the present invention has improved the original mode of passing through control pile holding oil cylinder 6 strokes and increase pile holding oil cylinder 6 quantity, then adopt peripheral fixing frame structure, an integral body is made in the jig arm both sides, integral rigidity and the intensity of jig arm have been improved, by changing the triatic stay 23 of different length, the piling bar that can realize 2～6 meters of diameters is set upright and is rectified a deviation, and easy to operate.
The manual jack of older generation's piling deviation-rectifying system is located immediately at the jig arm upper surface, makes script tense working face all in tumble, more influences operator safety.The present invention is replaced by electronic high pressure jack 13 with jack, makes it be embedded in jig arm inside, vacates the valuable construction space of clamp arm surfaces, both sides all arrange handrail, guarantee operator safety, and have improved automaticity, only need Remote, improved construction safety coefficient and operating efficiency.
Large and small jig arm 5 is embedded with the equally distributed pushing tow of 4 covers system 2, and electronic jack 13 is embedded in it, cooperates triatic stay 23 and end rollers 21, can directly correction power be put on the piling bar outside.On the big jig arm 13 pushing tow systems 2 are set, 1 pushing tow system 2 is set on the clip arm 5.The distance in pushing tow system 2 maximum extension position and the center of circle is 2～6 meters.Than setting upright and deviation-rectifying system of older generation, realize 2 meters～6 meters large-scale piling work of diameter, the different-diameter piling bar cooperates the strut 23 of different length to be achieved by 4 pushing tow systems 2.
Pushing tow system 2 inside are by electronic jack 13, pedestal 20, and strut 23 and roller 21 are formed.The pushing tow direction of pushing tow system 2 is towards the center of circle of annulus.The pedestal 20 of pushing tow system 2 is arranged on the circular arc of big jig arm 1 or clip arm 5, and jack 13 is set on the pedestal 20, the direction towards the center of circle, and the top of jack 13 arranges strut 23, and the top of strut 23 arranges roller 21.When stake footpath not simultaneously, the strut 23 of supporting installation different length withstands the pile body outer surface to satisfy roller 21, sets upright guiding and deviation-correcting function when realizing piling.Oil cylinder quantity had both been saved in design like this, can better realize that again the correction power that is applied to pile body surface do not give a discount.Thereby correction can easily be finished, improved correction efficient.
Shown in Fig. 4 A and Fig. 4 B, the both sides jig arm has increased a cover vertical locking mechanism of control automatically, and the connecting end of big jig arm 1 is public tapered end 3, and the connecting end of clip arm 5 is female tapered end 4, and public tapered end 3 and female tapered end 4 are fixed by bearing pin, and bearing pin connects vertical lock oil cylinder 22.During the correction operation, two jig arm are embraced, and vertical lock oil cylinder 22 actions realize that the rigidity of both sides jig arm is hinged.Can reduce the load requirement to pile holding oil cylinder 6 on the one hand, improve Economy, on the other hand, increased the integral rigidity of jig arm, thereby can realize the Horizontal displacement of more accurate adjusting pile body, reduce the interference that brings because of the jig arm resiliently deformable, improve correction precision and the centering capacity of complete equipment.
Connect by pile holding oil cylinder 6 between big jig arm 1 and chuck 7, clip arm 5 and the chuck 7.Large and small jig arm 5 is installed within the chuck 7 by axle, by the large and small jig arm folding of pile holding oil cylinder 6 controls.The jig arm end is provided with vertical lock oil cylinder 22, after large and small jig arm closure, can promote bearing pin, realizes that the rigidity of large and small jig arm is hinged.
Chuck 7 is connected with telescopic boom 14, and the other end of telescopic boom 14 is connected with pivoted arm 17, and the both sides of pivoted arm 17 and telescopic boom 14 arrange promotes mainly oil cylinder 16.Setting operation platform 8 on the telescopic boom 14, operating table 8 is vertical with telescopic boom 14.Telescopic boom 14 both sides arrange thruster system 12, and thruster system 12 is vertical with telescopic boom 14, and operating table 8 is arranged at thruster system 12 tops.Telescopic boom 14 is placed within the pivoted arm 17, can realize the flexible of certain limit.Thruster system 12 is placed in outside the telescopic boom 14, cooperates thruster oil cylinder 9, can control the certain scope of pivoted arm 17 left-right rotation.
Supporting leg comprises front leg strut 10 and rear support leg 18, and front leg strut 10 is connected with preceding pedestal 11, and rear support leg 18 is connected with back pedestal 19.Operating table 8 is positioned at thruster system 12 tops, and thruster system both sides are connected with front leg strut 10, and pivoted arm 17 is terminal hinged with rear support leg., be connected with the bearing flange of deck plane as support by the box-shaped leg, make things convenient for integral disassembly, assembly.Two-layerly up and down be connected by flange with supporting leg.Before and after the whole box-shaped leg hound 15 is set all, to increase its rigidity.
Two-layer deviation-rectifying system all can independently be controlled up and down, and operating console is positioned at thruster system 12 tops, adds certain floor height, utilizes leverage, and the perpendicularity that can accurately control pile sinking is no more than 2/1000ths.The correction power that puts on the piling bar surface at XY two to all being not less than 100 tons.The correction power of each electronic jack 13 also is 100 tons, and maximum correction scope can realize that XY two is to ± 1 meter.Maximum correction diameter range can reach 2～6 meters.By promoting mainly oil cylinder 16 and thruster oil cylinder 9, can realize that XY two adjusts to thick step location and the correction of ± 1 meter scope.By 4 uniform electronic jack 13 in the circumferential surface, can realize ± the meticulous adjustment correction of 150 millimeters scopes.Coarse adjustment combines with fine tuning, at utmost improves operating efficiency.
As shown in Figure 5, during work, telescopic boom 14 of the present invention and pivoted arm 17 are got back to specified position, and be big, little jig arm is opened, and it is two-layer big up and down to treat that piling bar enters jig arm back in place, little jig arm is closed up, not locked, stay certain interval, two jig arm are selected one as holding up by point, and certain-length stretches out in pushing tow system 2, make its end rollers 21 contact piling bars, go into the initial perpendicularity of mud to control it, it is drowned oneself smoothly, jig arm sinks to providing to set upright the guiding support for piling bar, drown oneself and begin hammer after finishing, ring hammer, in beating the hammer process, all keep measuring in real time, and piling bar is free body, unfettered, in order to avoid break hydraulic system.In case finding needs correction, then stops hammer, 2 playback of pushing tow system, large and small jig arm realizes that by vertical lock oil cylinder 22 rigidity is hinged.Layering starts some electronic jack 13 according to circumstances, implements meticulous adjustment correction operation.At this moment, piling bar is full constraint in the horizontal direction, and with its Horizontal displacement of accurate control, vertical direction only top side pushes away the rolling friction of roller 21.After correction finished, jig arm was opened, and the maintenance piling bar is free body, repeated aforesaid operations and began piling.
Whole system of the present invention comprises machinery, and hydraulic pressure and the electric integral body that has of one's own arrange quick the connection with main ship deck.Can implement to prize the piece formula and install, the integrated type dismounting.Be convenient to the worker according to the different special-purpose construction equipments of different task pattern configuration versatile and flexible, at utmost rationally utilize deck space.
Those of ordinary skill in the art will be appreciated that above specification only is one or more mode of executions among the numerous embodiments of the present invention, and is not to use limitation of the invention.Any for the above embodiment equalization variation, modification and be equal to technological schemes such as alternative, as long as connotation scope according to the invention, all will drop in the scope that claims of the present invention protect.
Claims (12)
1. a pile body is set upright and deviation-rectifying system, comprises jig arm, it is characterized in that:
Described jig arm comprises big jig arm and little jig arm, two sections circular arcs of described big jig arm and little jig arm, and an end is movable end, be movably connected on chuck, the other end is connecting end, can turn an angle by the coupling shaft in chuck, thus annulus that fastens pile body of closed ring coiled;
On described big jig arm and the little jig arm pushing tow system is set respectively, the pushing tow direction of described pushing tow system is towards the center of circle of annulus;
The pedestal of described pushing tow system is arranged on the circular arc of big jig arm or little jig arm, and jack is set on the pedestal, the direction towards the center of circle, and the top of jack arranges strut, and the top of strut arranges roller.
2. pile body as claimed in claim 1 is set upright and deviation-rectifying system, it is characterized in that, described centralizing system comprises the two cover jig arm that arrange vertically, and two cover telescopic boom and pivoted arms connect with supporting leg between two cartridge clip arm systems up and down, and hound is set.
3. pile body as claimed in claim 1 is set upright and deviation-rectifying system, it is characterized in that, the circular arc of described big jig arm correspondence is major arc, and the circular arc of clip arm correspondence is minor arc.
4. pile body as claimed in claim 1 is set upright and deviation-rectifying system, it is characterized in that, 3 pushing tow systems are set on the described big jig arm, and 1 pushing tow system is set on the described little jig arm.And the pushing tow system is embedded in the inside of big jig arm, little jig arm.
5. pile body as claimed in claim 1 is set upright and deviation-rectifying system, it is characterized in that, the connecting end of described big jig arm is public tapered end, and the connecting end of described little jig arm is female tapered end, and described public tapered end and described female tapered end are fixed by bearing pin, and bearing pin connects vertical lock oil cylinder.
6. pile body as claimed in claim 1 is set upright and deviation-rectifying system, it is characterized in that, connects by the axle of being located on the chuck between described big jig arm and chuck, described little jig arm and the chuck, controls its expansion or closure by the pile holding oil cylinder.
7. pile body as claimed in claim 2 is set upright and deviation-rectifying system, it is characterized in that, described chuck is connected with telescopic boom, and the other end of telescopic boom is connected with pivoted arm, arranges between telescopic boom and the pivoted arm and promotes mainly oil cylinder.
8. pile body as claimed in claim 7 is set upright and deviation-rectifying system, it is characterized in that, described telescopic boom both sides arrange the thruster system, and telescopic boom is placed in the framework of thruster system, and described thruster system is vertical with described telescopic boom.
9. pile body as claimed in claim 8 is set upright and deviation-rectifying system, it is characterized in that, setting operation platform in the described thruster system, and described operating table is vertical with described telescopic boom.
10. pile body as claimed in claim 9 is set upright and deviation-rectifying system, it is characterized in that described thruster system two ends arrange front leg strut, the end of described pivoted arm arranges rear support leg, described front leg strut is connected with described preceding pedestal, and described rear support leg is connected with described back pedestal.The front and back supporting leg connects by hound.
11. pile body as claimed in claim 1 is set upright and deviation-rectifying system, it is characterized in that, the distance in described pushing tow system's maximum extension position and the center of circle is 2～6 meters.
12. pile body as claimed in claim 1 is set upright and deviation-rectifying system, it is characterized in that, the center of circle of the closed circle that big jig arm, clip arm form can movable scope be that XY two is to ± 1 meter.
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| CN201310163710.1A CN103233867B (en) | 2013-05-06 | 2013-05-06 | Pile centralizing and rectification system |
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| CN201310163710.1A CN103233867B (en) | 2013-05-06 | 2013-05-06 | Pile centralizing and rectification system |
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| CN103233867A true CN103233867A (en) | 2013-08-07 |
| CN103233867B CN103233867B (en) | 2015-05-06 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297724A (en) * | 2015-12-02 | 2016-02-03 | 福建省闽工新型建材有限公司 | Pile sinking construction method for precast concrete plank pile |
| CN107165167A (en) * | 2017-06-19 | 2017-09-15 | 上海衡拓船舶设备有限公司 | Marine guidance piling pile gripper |
| CN108343561A (en) * | 2018-04-28 | 2018-07-31 | 河南理工大学 | A kind of goaf place Wind turbines deviation correcting device and its method for correcting error |
| CN108708379A (en) * | 2018-03-27 | 2018-10-26 | 武汉船用机械有限责任公司 | A kind of pile gripper |
| CN108894227A (en) * | 2018-07-20 | 2018-11-27 | 大连理工大学 | A kind of ocean wind-power single-pile foundation that rolling is compensation holding erection device |
| CN109183796A (en) * | 2018-08-29 | 2019-01-11 | 武汉船用机械有限责任公司 | A kind of pile gripper |
| CN109371970A (en) * | 2018-11-13 | 2019-02-22 | 南通市海洋水建工程有限公司 | One kind being used for offshore wind farm single pile pile sinking stable platform and its localization method |
| CN115123461A (en) * | 2022-05-27 | 2022-09-30 | 大连理工大学 | Offshore wind turbine complete machine transportation integrated ship with wave compensation function and installation method thereof |
| WO2023082754A1 (en) * | 2021-11-10 | 2023-05-19 | 中国华能集团清洁能源技术研究院有限公司 | Customized design method for wind turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297724A (en) * | 2015-12-02 | 2016-02-03 | 福建省闽工新型建材有限公司 | Pile sinking construction method for precast concrete plank pile |
| CN107165167A (en) * | 2017-06-19 | 2017-09-15 | 上海衡拓船舶设备有限公司 | Marine guidance piling pile gripper |
| CN108708379A (en) * | 2018-03-27 | 2018-10-26 | 武汉船用机械有限责任公司 | A kind of pile gripper |
| CN108343561B (en) * | 2018-04-28 | 2023-09-15 | 河南理工大学 | Goaf site wind turbine generator system deviation correcting device and deviation correcting method thereof |
| CN108343561A (en) * | 2018-04-28 | 2018-07-31 | 河南理工大学 | A kind of goaf place Wind turbines deviation correcting device and its method for correcting error |
| CN108894227A (en) * | 2018-07-20 | 2018-11-27 | 大连理工大学 | A kind of ocean wind-power single-pile foundation that rolling is compensation holding erection device |
| CN109183796A (en) * | 2018-08-29 | 2019-01-11 | 武汉船用机械有限责任公司 | A kind of pile gripper |
| CN109183796B (en) * | 2018-08-29 | 2020-12-08 | 武汉船用机械有限责任公司 | Pile gripper |
| CN109371970A (en) * | 2018-11-13 | 2019-02-22 | 南通市海洋水建工程有限公司 | One kind being used for offshore wind farm single pile pile sinking stable platform and its localization method |
| CN109371970B (en) * | 2018-11-13 | 2023-11-07 | 南通市海洋水建工程有限公司 | Single pile sinking stable platform for offshore wind power and positioning method thereof |
| WO2023082754A1 (en) * | 2021-11-10 | 2023-05-19 | 中国华能集团清洁能源技术研究院有限公司 | Customized design method for wind turbine |
| CN115123461B (en) * | 2022-05-27 | 2023-09-08 | 大连理工大学 | Marine fan whole machine transportation integrated ship with wave compensation function and installation method thereof |
| CN115123461A (en) * | 2022-05-27 | 2022-09-30 | 大连理工大学 | Offshore wind turbine complete machine transportation integrated ship with wave compensation function and installation method thereof |
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| CN103233867B (en) | 2015-05-06 |
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Inventor after: Liu Tianwen Inventor after: Wu Xianda Inventor after: Shen Liufeng Inventor after: Zhou Huiqin Inventor before: Liu Tianwen |
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Application publication date: 20130807 Assignee: Shanghai Zhenhua Heavy Industry Group (Nantong) Transmission Machinery Co.,Ltd. Assignor: Shanghai Zhenhua Heavy Industries (Group) Co., Ltd. Contract record no.: 2019310000035 Denomination of invention: Pile centralizing and rectification system Granted publication date: 20150506 License type: Exclusive License Record date: 20190417 |