CN112482376A - Waterborne photovoltaic pile machine convenient to position and method - Google Patents
Waterborne photovoltaic pile machine convenient to position and method Download PDFInfo
- Publication number
- CN112482376A CN112482376A CN202011185368.1A CN202011185368A CN112482376A CN 112482376 A CN112482376 A CN 112482376A CN 202011185368 A CN202011185368 A CN 202011185368A CN 112482376 A CN112482376 A CN 112482376A
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- China
- Prior art keywords
- winch
- pile
- rod
- mounting plate
- top end
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/08—Drop drivers with free-falling hammer
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
- E02D7/16—Scaffolds or supports for drivers
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a waterborne photovoltaic pile driver convenient for positioning, which belongs to the technical field of pile driving equipment and comprises a floating carrier and a mounting plate, wherein the top end of the floating carrier is connected with the mounting plate, the top end of the mounting plate is hinged with a pile frame, the right side of the pile frame is hinged with an electric telescopic rod, the right side of the electric telescopic rod is positioned at the top end of the mounting plate and is provided with a winch, a steel wire rope is wound on the winch, the top end of the pile frame is fixedly connected with a top plate, the bottom end of the top plate is uniformly provided with a fixed pulley, the left side of the pile frame is provided with a diesel hammer, the other end of the steel wire rope penetrates through the fixed pulley to be connected with the top end of the diesel hammer, the bottom end of the diesel hammer is provided with a tubular pile, the surface of the mounting plate is provided with a channel matched with, the use of driving machinery is reduced, and the energy consumption is reduced.
Description
Technical Field
The invention relates to the technical field of piling equipment, in particular to a water photovoltaic piling machine convenient to position and a method.
Background
The photovoltaic board is generally installed on the air ground or the surface of water, the pile needs to be driven when the photovoltaic board is installed on water, at present, the floating carrier is mostly used for carrying a pile driver to drive the pile, when the pile is driven on water, the storm of the surface of water is large, the floating carrier is easy to shake, so that the position accuracy of the pile driving is not high, the existing anchor can be used for fixing, the anchor is installed manually or mechanically when the anchor is installed, the labor intensity of workers can be increased through manual installation, the time of the whole process of pile driving is increased, the pile driving efficiency is reduced, the waste of energy resources can be caused through mechanical installation, and therefore, the water photovoltaic pile driver and the method which are convenient to locate are provided.
Disclosure of Invention
The invention aims to provide a waterborne photovoltaic pile driver convenient to position and a method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a waterborne photovoltaic pile machine convenient to position comprises a floating carrier and a mounting plate, wherein the top end of the floating carrier is connected with the mounting plate, the top end of the mounting plate is hinged with a pile frame, the right side of the pile frame is hinged with an electric telescopic rod, the other end of the electric telescopic rod is hinged with the top end of the mounting plate, the right side of the electric telescopic rod is positioned at the top end of the mounting plate and is provided with a winch, the output end of the winch is connected with a driving shaft, the periphery of the driving shaft is fixedly sleeved with a main bevel gear, a rotating rod penetrates through the top end of the mounting plate and is connected with a driving mechanism, the top end of the rotating rod is fixedly connected with a secondary bevel gear, the secondary bevel gear is mutually meshed with the main bevel gear, the other side of the, the utility model discloses a tubular pile, including mounting panel, hoist engine, electric telescopic handle, cylinder, fixed pulley, pipe pile, mounting panel, electric telescopic handle, power generation machine, hoist engine rear side is located the mounting panel top and installs the generator, hoist engine, electric telescopic handle and cylinder all are connected with the generator is linear, the rolling has wire rope on the hoist engine, pile frame top fixedly connected with roof, the fixed pulley is evenly installed to the roof bottom, the diesel hammer is installed in pile frame left side, the wire rope other end passes the fixed pulley and is connected with diesel hammer top, the tubular pile is installed to diesel hammer bottom, the mounting panel surface seted up with tubular pile assorted.
Preferably, the two sides of the threaded anchor rod are located at the top end of the mounting plate and fixedly connected with fixed blocks, the top end of each fixed block is hinged with a movable rod, the other end of each movable rod is hinged with a limiting block, and the limiting blocks are connected with the side faces of the threaded anchor rod.
Preferably, the threaded anchor rod is internally provided with sliding grooves in two sides, the limiting block is fixedly connected with a connecting block on the inner side, the other side of the connecting block is fixedly connected with a sliding block, and the connecting block is connected with the sliding block and the sliding grooves in a sliding manner.
Preferably, actuating mechanism includes bull stick, main belt pulley, follows the belt pulley and flat belt, the bull stick is located the peripheral fixed cover of mounting panel inner chamber part and has connect main belt pulley, the belt pulley is all installed from at four corners in the mounting panel inner chamber, it is connected with main belt pulley transmission through flat belt from the belt pulley.
Preferably, the inner side of the secondary pulley is provided with threads, and the threaded anchor rod is in threaded connection with the threads.
Preferably, the balls are uniformly and movably inserted from the inner parts of the top end and the bottom end of the periphery of the belt pulley, rolling grooves matched with the balls are formed in the top end and the bottom end of the inner cavity of the mounting plate, and the balls are in rolling connection with the rolling grooves.
The utility model provides a method for using photovoltaic pile driver on water convenient to location which characterized in that:
s1: firstly, moving a mounting plate to a position to be piled by a floating carrier to enable a channel to be aligned to a piling center, then checking whether a generator, a winch, an electric telescopic rod and a cylinder normally operate or not, and starting the electric telescopic rod to prop up a pile frame after the checking is finished and the cylinder can normally operate;
s2: starting the air cylinder to enable the driving rod to push the winch to enable the main bevel gear to be meshed with the auxiliary bevel gear, then closing the air cylinder and starting the winch, enabling the driving shaft to drive the main bevel gear to rotate through the winch, enabling the main bevel gear to drive the rotating rod to rotate through the auxiliary bevel gear, enabling the rotating rod to rotate to enable the main belt pulley to rotate, enabling the main belt pulley to rotate through the flat belt, enabling the threaded anchor rod to move downwards slowly through rotation of the auxiliary belt pulley, enabling the threaded anchor rod to enter the water bottom and be fixed, and then closing the winch;
s3: simultaneously, the steel wire rope is loosened, the steel wire rope is pulled down to be provided with a diesel hammer and a tubular pile, and after the steel wire rope is installed, the cylinder is started to enable the driving rod to contract, so that the main bevel gear is separated from the auxiliary bevel gear;
s4: then starting a winch to lift the diesel hammer to a pile driving point, finishing energy storage after the diesel hammer is lifted, freely releasing a steel wire rope by the winch at the moment, hammering the pipe pile by the diesel hammer downwards and freely falling to start pile driving;
s5: and stopping working when the tubular pile is driven into the height meeting the requirement.
Compared with the prior art, the invention has the beneficial effects that: the driving mechanism is arranged, and the driving mechanism operates when the driving shaft and the main bevel gear on the winch rotate, so that the threaded anchor rod moves downwards to enter the water bottom and is fixed, the floating carrier and the mounting plate are not easy to shake, the stability during piling is ensured, the accuracy of a piling position is also ensured, the piling efficiency is improved, and the labor intensity of workers is reduced; the driving mechanism is driven by the winding mechanism, the steel wire rope is released by the winding machine, the driving mechanism is driven, two mechanical actions are completed by one driving machine, the use of the driving machine is reduced, and the energy consumption is reduced.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at the position A of the present invention;
FIG. 3 is an enlarged view of the structure of the present invention at B;
FIG. 4 is an enlarged view of the structure of the present invention at C;
FIG. 5 is a top cross-sectional structural view of the threaded bolt of the present invention;
FIG. 6 is a schematic view of the internal structure of the mounting plate of the present invention;
FIG. 7 is a schematic view of the connection structure of the slave pulley and the threaded anchor rod of the present invention;
FIG. 8 is an enlarged view of the structure of the present invention at D.
In the figure: 1. a floating carrier; 2. mounting a plate; 3. pile frames; 4. a diesel hammer; 5. a tubular pile; 6. a top plate; 7. a fixed pulley; 8. a winch; 81. a drive shaft; 82. a main bevel gear; 9. a wire rope; 10. an electric telescopic rod; 11. a generator; 12. a threaded anchor rod; 121. a chute; 13. a rotating rod; 14. a slave bevel gear; 15. a cylinder; 16. a drive rod; 17. a fixed block; 18. a movable rod; 19. a limiting block; 191. connecting blocks; 192. a slider; 20. a primary pulley; 21. a secondary pulley; 211. a thread; 212. a ball bearing; 22. a flat belt; 23. a channel; 24. and (4) rolling the groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3 and fig. 6, the present invention provides a technical solution: a waterborne photovoltaic pile machine convenient for positioning comprises a floating carrier 1 and a mounting plate 2, wherein the floating carrier 1 can be a ship body, the top end of the floating carrier 1 is connected with the mounting plate 2, the top end of the mounting plate 2 is hinged with a pile frame 3, the right side of the pile frame 3 is hinged with an electric telescopic rod 10, the other end of the electric telescopic rod 10 is hinged with the top end of the mounting plate 2, the right side of the electric telescopic rod 10 is positioned at the top end of the mounting plate 2 and is provided with a winch 8, the output end of the winch 8 is connected with a driving shaft 81, the periphery of the driving shaft 81 is fixedly sleeved with a main bevel gear 82, the top end of the mounting plate 2 is penetrated with a rotating rod 13, the inner cavity part of the mounting plate 2 of the rotating rod 13 is connected with a driving mechanism, the top end of the rotating rod 13 is fixedly connected with a secondary bevel gear, the generator 11 is arranged at the top end of the mounting plate 2 at the rear side of the winch 8, the generator 11 is a diesel generator or a gasoline generator, the winch 8, electric telescopic handle 10 and cylinder 15 all are connected with generator 11 linearity, the rolling has wire rope 9 on hoist engine 8, 3 top fixedly connected with roofs 6 of pile frame, fixed pulley 7 is evenly installed to 6 bottoms of roof, diesel hammer 4 is installed in 3 left sides of pile frame, be provided with cylinder body and combustion chamber in the diesel hammer 4, externally mounted has the striking pin body, the wire rope 9 other end passes fixed pulley 7 and is connected with 4 tops of diesel hammer, tubular pile 5 is installed to diesel hammer 4 bottoms, the diesel hammer 4 bottom is equipped with the fixed pincers of installation tubular pile 5, 2 surfaces of mounting panel seted up with tubular pile 5 assorted passageway 23, passageway 23 is used for installation tubular pile 5 and makes tubular pile 5 pass through, 2 top both sides of mounting panel evenly run through threaded stock 12.
Referring to fig. 4, two sides of the threaded anchor rod 12 are fixedly connected to a fixed block 17 at the top end of the mounting plate 2, a movable rod 18 is hinged to the top end of the fixed block 17, a limiting block 19 is hinged to the other end of the movable rod 18, and the limiting block 19 is connected to the side surface of the threaded anchor rod 12.
Referring to fig. 5, sliding grooves 121 are formed in both sides of the threaded anchor rod 12, a connecting block 191 is fixedly connected to the inner side of the limiting block 19, a sliding block 192 is fixedly connected to the other side of the connecting block 191, and the connecting block 191, the sliding block 192 and the sliding grooves 121 are slidably connected.
Referring to fig. 6, the driving mechanism includes a rotating rod 13, a primary pulley 20, a secondary pulley 21 and a flat belt 22, the primary pulley 20 is fixedly sleeved on the periphery of the inner cavity of the mounting plate 2 of the rotating rod 13, the secondary pulleys 21 are mounted at four corners of the inner cavity of the mounting plate 2, the secondary pulleys 21 are in transmission connection with the primary pulley 20 through the flat belt 22, and the primary pulley 20 is composed of four pulleys respectively connected with the four flat belts 22.
Referring to fig. 7, a thread 211 is formed from the inner side of the pulley 21, and the threaded anchor 12 is threadedly coupled to the thread 211.
Referring to fig. 8, balls 212 are uniformly and movably inserted into the periphery of the top end and the bottom end of the belt pulley 21, the balls 212 can move, rolling grooves 24 matched with the balls 212 are formed in the top end and the bottom end of the inner cavity of the mounting plate 2, and the balls 212 are in rolling connection with the rolling grooves 24.
A use method of a waterborne photovoltaic pile driver convenient to position comprises the following steps:
s1: firstly, moving the mounting plate 2 to a position to be piled by the floating carrier 1 to enable the channel 23 to be aligned with the piling center, then checking whether the generator 11, the winch 8, the electric telescopic rod 10 and the air cylinder 15 run normally, and starting the electric telescopic rod 10 to prop up the pile frame 3 after the checking is finished and the electric telescopic rod can run normally;
s2: starting the air cylinder 15 to enable the driving rod 16 to push the winch 8 to enable the main bevel gear 82 to be meshed with the auxiliary bevel gear 14, then closing the air cylinder 15 and starting the winch 8, enabling the driving shaft 81 to drive the main bevel gear 82 to rotate by the winch 8, enabling the main bevel gear 82 to drive the rotating rod 13 to rotate by the auxiliary bevel gear 14, enabling the rotating rod 13 to rotate to enable the main belt pulley 20 to rotate, enabling the main belt pulley 20 to enable the auxiliary belt pulley 21 to rotate by the flat belt 22, enabling the threaded anchor rod 12 to move downwards slowly by the rotation of the auxiliary belt pulley 21, enabling the threaded anchor rod 12 to enter the water bottom and be fixed, and then closing the winch 8;
s3: simultaneously, the steel wire rope 9 is loosened, the steel wire rope 9 is pulled down to install the diesel hammer 4 and the tubular pile 5, and after the installation is finished, the cylinder 15 is started to enable the driving rod 16 to contract, so that the main bevel gear 82 is separated from the auxiliary bevel gear 14;
s4: then, the winch 8 is started to lift the diesel hammer 4 to a piling point, energy storage is completed after the diesel hammer 4 is lifted, at the moment, the winch 8 freely releases the steel wire rope 9, the diesel hammer 4 can freely fall downwards to hammer the tubular pile 5, and piling work is started;
s5: and stopping working when the tubular pile 5 is driven into the height meeting the requirement.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a photovoltaic stake machine on water convenient to location, includes floating carrier (1) and mounting panel (2), floating carrier (1) top is connected with mounting panel (2), its characterized in that: the top end of the mounting plate (2) is hinged with a pile frame (3), the right side of the pile frame (3) is hinged with an electric telescopic rod (10), the other end of the electric telescopic rod (10) is hinged with the top end of the mounting plate (2), the right side of the electric telescopic rod (10) is positioned at the top end of the mounting plate (2) and is provided with a winch (8), the output end of the winch (8) is connected with a driving shaft (81), a main bevel gear (82) is fixedly sleeved on the periphery of the driving shaft (81), a rotating rod (13) penetrates through the top end of the mounting plate (2), the part of the rotating rod (13) positioned in the inner cavity of the mounting plate (2) is connected with a driving mechanism, the top end of the rotating rod (13) is fixedly connected with a slave bevel gear (14), the slave bevel gear (14) is mutually meshed with the, the output end of the cylinder (15) is connected with a driving rod (16), the driving rod (16) is fixedly connected with one side of a winch (8), the rear side of the winch (8) is positioned at the top end of the mounting plate (2) and is provided with a generator (11), the winch (8), the electric telescopic rod (10) and the cylinder (15) are linearly connected with the generator (11), the winch (8) is wound with a steel wire rope (9), the top end of the pile frame (3) is fixedly connected with a top plate (6), a fixed pulley (7) is uniformly arranged at the bottom end of the top plate (6), a diesel hammer (4) is arranged on the left side of the pile frame (3), the other end of the steel wire rope (9) passes through the fixed pulley (7) to be connected with the top end of the diesel hammer (4), a pipe pile (5) is arranged at the bottom end of the diesel hammer (4), a channel (23) matched with the, threaded anchor rods (12) uniformly penetrate through two sides of the top end of the mounting plate (2).
2. The easy to position waterborne photovoltaic pile driver as claimed in claim 1, wherein: the thread anchor rod (12) both sides are located mounting panel (2) top fixedly connected with fixed block (17), fixed block (17) top articulates there is movable rod (18), movable rod (18) other end articulates there is limiting block (19), limiting block (19) and thread anchor rod (12) side are connected.
3. The photovoltaic pile driver convenient to position of claim 2, characterized in that: the thread anchor rod is characterized in that sliding grooves (121) are formed in the two sides of the thread anchor rod (12), a connecting block (191) is fixedly connected to the inner side of the limiting block (19), a sliding block (192) is fixedly connected to the other side of the connecting block (191), and the connecting block (191), the sliding block (192) and the sliding grooves (121) are connected in a sliding mode.
4. The photovoltaic pile driver convenient to position of claim 3, characterized in that: actuating mechanism includes bull stick (13), main belt pulley (20), from flat belt (22) in belt pulley (21), bull stick (13) are located mounting panel (2) inner chamber part peripheral fixed cover and have been connect main belt pulley (20), four corners in mounting panel (2) inner chamber are all installed from belt pulley (21), from belt pulley (21) through flat belt (22) with main belt pulley (20) transmission connection.
5. The photovoltaic pile driver convenient to position of claim 4, characterized in that: the inner side of the secondary belt pulley (21) is provided with threads (211), and the threaded anchor rod (12) is in threaded connection with the threads (211).
6. The easy to position waterborne photovoltaic pile driver as claimed in claim 5, wherein: the inner periphery of the top end and the bottom end of the driven belt pulley (21) is uniformly and movably inserted with balls (212), rolling grooves (24) matched with the balls (212) are formed in the top end and the bottom end of an inner cavity of the mounting plate (2), and the balls (212) are in rolling connection with the rolling grooves (24).
7. Use of a conveniently positioned marine photovoltaic pile driver as claimed in any one of claims 1 to 6 wherein:
s1: firstly, moving a mounting plate (2) to a position to be piled through a floating carrier (1), aligning a channel (23) to a piling center, then checking whether a generator (11), a winch (8), an electric telescopic rod (10) and a cylinder (15) normally operate, and starting the electric telescopic rod (10) to prop up a pile frame (3) after the checking is finished and the electric telescopic rod can normally operate;
s2: starting an air cylinder (15) to enable a driving rod (16) to push a winch (8) to enable a main bevel gear (82) to be meshed with a slave bevel gear (14), then closing the air cylinder (15) and starting the winch (8), enabling the winch (8) to enable a driving shaft (81) to drive the main bevel gear (82) to rotate, enabling the main bevel gear (82) to drive a rotating rod (13) to rotate through the slave bevel gear (14), enabling the rotating rod (13) to rotate to enable a main belt pulley (20) to rotate, enabling the slave belt pulley (21) to rotate through a flat belt (22), enabling a threaded anchor rod (12) to move downwards slowly through rotation of the slave belt pulley (21), enabling the threaded anchor rod (12) to enter the water bottom and be fixed, and then closing the winch (8);
s3: meanwhile, the steel wire rope (9) is loosened, the steel wire rope (9) is pulled down to be provided with the diesel hammer (4) and the tubular pile (5), and after the installation is finished, the cylinder (15) is started to enable the driving rod (16) to contract, so that the main bevel gear (82) is separated from the auxiliary bevel gear (14);
s4: then, a winch (8) is started to lift the diesel hammer (4) to a pile driving point, energy storage is completed after the diesel hammer (4) is lifted, at the moment, the winch (8) freely releases a steel wire rope (9), the diesel hammer (4) can freely fall downwards to hammer the tubular pile (5), and pile driving work is started;
s5: and stopping working when the tubular pile (5) is driven into the height meeting the requirement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202011185368.1A CN112482376B (en) | 2020-10-30 | 2020-10-30 | Water photovoltaic piling machine convenient to position and method |
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Application Number | Priority Date | Filing Date | Title |
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CN202011185368.1A CN112482376B (en) | 2020-10-30 | 2020-10-30 | Water photovoltaic piling machine convenient to position and method |
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CN112482376A true CN112482376A (en) | 2021-03-12 |
CN112482376B CN112482376B (en) | 2022-05-10 |
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CN202011185368.1A Active CN112482376B (en) | 2020-10-30 | 2020-10-30 | Water photovoltaic piling machine convenient to position and method |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2144668Y (en) * | 1992-09-29 | 1993-10-27 | 兖州县小孟乡建筑工程公司 | Vibration type foundation compaction pile machine |
CN103669347A (en) * | 2013-12-31 | 2014-03-26 | 葛洲坝集团试验检测有限公司 | Underwater anchor rod construction method |
CN106284351A (en) * | 2016-10-14 | 2017-01-04 | 江苏聚亿智能科技有限公司 | There is the photovoltaic piling machine of hi-Fix |
CN106337660A (en) * | 2016-11-01 | 2017-01-18 | 周兆弟 | Double-pressure-holding power down-set pile driver |
CN211228498U (en) * | 2019-11-21 | 2020-08-11 | 烟台仁晟工程设备有限公司 | Impact drilling pile driver |
-
2020
- 2020-10-30 CN CN202011185368.1A patent/CN112482376B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2144668Y (en) * | 1992-09-29 | 1993-10-27 | 兖州县小孟乡建筑工程公司 | Vibration type foundation compaction pile machine |
CN103669347A (en) * | 2013-12-31 | 2014-03-26 | 葛洲坝集团试验检测有限公司 | Underwater anchor rod construction method |
CN106284351A (en) * | 2016-10-14 | 2017-01-04 | 江苏聚亿智能科技有限公司 | There is the photovoltaic piling machine of hi-Fix |
CN106337660A (en) * | 2016-11-01 | 2017-01-18 | 周兆弟 | Double-pressure-holding power down-set pile driver |
CN211228498U (en) * | 2019-11-21 | 2020-08-11 | 烟台仁晟工程设备有限公司 | Impact drilling pile driver |
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CN112482376B (en) | 2022-05-10 |
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